CN106000422A - Titanium dioxide/tin sulfide composite material, preparation method and application thereof - Google Patents
Titanium dioxide/tin sulfide composite material, preparation method and application thereof Download PDFInfo
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- CN106000422A CN106000422A CN201610382017.7A CN201610382017A CN106000422A CN 106000422 A CN106000422 A CN 106000422A CN 201610382017 A CN201610382017 A CN 201610382017A CN 106000422 A CN106000422 A CN 106000422A
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- titanium dioxide
- tin disulfide
- composite
- mesoporous
- tin
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 375
- 239000002131 composite material Substances 0.000 title claims abstract description 157
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 142
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title abstract 6
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- 238000000576 coating method Methods 0.000 claims abstract description 62
- 239000002245 particle Substances 0.000 claims abstract description 30
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 15
- 238000011065 in-situ storage Methods 0.000 claims abstract description 11
- ALRFTTOJSPMYSY-UHFFFAOYSA-N tin disulfide Chemical compound S=[Sn]=S ALRFTTOJSPMYSY-UHFFFAOYSA-N 0.000 claims description 128
- 239000008187 granular material Substances 0.000 claims description 39
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 claims description 15
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 235000014121 butter Nutrition 0.000 claims description 14
- 239000011593 sulfur Substances 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 238000005286 illumination Methods 0.000 claims description 10
- 239000013335 mesoporous material Substances 0.000 claims description 9
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 2
- ZAPAMMDQEWCVAM-UHFFFAOYSA-N tin;hydrate Chemical compound O.[Sn] ZAPAMMDQEWCVAM-UHFFFAOYSA-N 0.000 claims description 2
- RBORURQQJIQWBS-QVRNUERCSA-N (4ar,6r,7r,7as)-6-(6-amino-8-bromopurin-9-yl)-2-hydroxy-2-sulfanylidene-4a,6,7,7a-tetrahydro-4h-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol Chemical compound C([C@H]1O2)OP(O)(=S)O[C@H]1[C@@H](O)[C@@H]2N1C(N=CN=C2N)=C2N=C1Br RBORURQQJIQWBS-QVRNUERCSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 15
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 6
- 239000010936 titanium Substances 0.000 abstract description 4
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 2
- AFNRRBXCCXDRPS-UHFFFAOYSA-N tin(ii) sulfide Chemical compound [Sn]=S AFNRRBXCCXDRPS-UHFFFAOYSA-N 0.000 abstract 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 68
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 45
- 239000000843 powder Substances 0.000 description 35
- 229960004756 ethanol Drugs 0.000 description 20
- 229960000935 dehydrated alcohol Drugs 0.000 description 19
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 17
- 238000000498 ball milling Methods 0.000 description 16
- 238000005406 washing Methods 0.000 description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 14
- 239000012153 distilled water Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 230000001699 photocatalysis Effects 0.000 description 12
- 230000015556 catabolic process Effects 0.000 description 11
- 238000006555 catalytic reaction Methods 0.000 description 11
- 238000006731 degradation reaction Methods 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 11
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 10
- FJLUATLTXUNBOT-UHFFFAOYSA-N 1-Hexadecylamine Chemical compound CCCCCCCCCCCCCCCCN FJLUATLTXUNBOT-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000011521 glass Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 8
- 238000010422 painting Methods 0.000 description 8
- 235000011164 potassium chloride Nutrition 0.000 description 8
- 239000001103 potassium chloride Substances 0.000 description 8
- 238000003908 quality control method Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- 238000005253 cladding Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007146 photocatalysis Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000013034 coating degradation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2094—Tin
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention relates to a titanium dioxide/tin sulfide composite material, a preparation method and application thereof. The titanium dioxide/tin sulfide composite material includes titanium dioxide particles and tin sulfide particles growing in situ on the surfaces of the titanium dioxide particles by hydrothermal method, the molar mass ratio of SnS2 and TiO2 in the titanium dioxide/tin sulfide composite material is (0.001-0.20):1, preferably (0.09-0.14):1, the particle size of the titanium dioxide particles is 10-50nm, and the particle size of the tin sulfide particles is 5-10nm. The invention adopts hydrothermal method (chemical bath method) to grow tin sulfide particles in situ on the titanium dioxide surface so as to obtain the titanium dioxide/tin sulfide composite material, and the titanium dioxide/tin sulfide composite material is applied to visible light for photocatalytic degradation of formaldehyde, thus reaching the purpose of indoor air purification. At the same time, by adjusting different Sn/Ti molar ratios, a composite coating material with the optimal visible-light catalytic activity can be obtained.
Description
Technical field
The present invention relates to a kind of NEW TYPE OF COMPOSITE coating material and preparation method thereof, belong to the preparation field of catalysis material.
Background technology
Titanium dioxide (TiO2) stable, nontoxic, cheap etc. excellent owing to having anti-chemistry and photoetch, physicochemical properties
Point, as the preferable semi-conducting material of one, is widely used in solaode, photocatalysis hydrogen production and photocatalytic degradation organic
The fields such as inorganic pollution.But, titanium dioxide is as a kind of exemplary wideband gap semiconductor material, and photoresponse scope is narrower, only
Can absorb ultraviolet light, its quantum efficiency is on the low side simultaneously so that it is there is many restrictions in actual applications.
The Shao Changlu of Northeast Normal University etc. load Tin disulfide hexagonal granule by hydro-thermal method on titanium dioxide nanofiber,
And have studied the catalytic capability of its organic liquid pollutant of degrading under visible ray and ultraviolet light respectively.
In a kind of stannic disulfide/titanium dioxide composite photocatalyst of Liu Hui et al. application and preparation method thereof, highlight two
Titan oxide particles is supported on hexagon Tin disulfide crystal, wherein, the mass ratio of titanium dioxide and stannic disulfide be 1:20～
100, and its applied water polluted heavy metals pollute improvement in terms of.
Summary of the invention
It is an object of the invention to provide a kind of titanium dioxide/Tin disulfide composite that can be used in air cleaning, the present invention
Another object be to provide a kind of mesoporous TiO 2/Tin disulfide composite, another object of the present invention is to provide one
Titanium dioxide/Tin disulfide composite application in air cleaning.
On the one hand, the invention provides a kind of titanium dioxide/Tin disulfide composite, including titanium dioxide granule and pass through
The Tin disulfide granule that hydro-thermal method grows at titanium dioxide granule surface in situ, SnS in described titanium dioxide/Tin disulfide composite2
And TiO2Molal weight than for (0.001～0.20): 1, preferably (0.09～0.14): 1, more preferably (0.06～0.12):
1, the particle diameter of described titanium dioxide granule is 10～50nm, and the particle diameter of Tin disulfide granule is 5～10nm.
Also, the present invention also provides for a kind of mesoporous TiO 2/Tin disulfide composite, including titania mesoporous ball and logical
Cross chemical baths and grow Tin disulfide granule, described mesoporous TiO 2/Tin disulfide composite wood at titania mesoporous ball surface in situ
SnS in material2And TiO2Molal weight than for (0.01～0.20): 1, preferably (0.09～0.14): 1, more preferably
(0.06～0.12): 1, the particle diameter of described titania mesoporous ball is 500～1000nm.
The present invention uses hydro-thermal method or chemical baths raw on titanium dioxide granule surface or titania mesoporous ball surface in situ
Long Tin disulfide, obtaining pattern is titanium dioxide granule and Tin disulfide Particles dispersed or Tin disulfide nanometer sheet cladding titanium dioxide Mesoporous Spheres
Titanium dioxide/Tin disulfide composite.The present invention is prepared by High Temperature High Pressure hydro-thermal reaction, titanium dioxide in course of reaction
Mesoporous Spheres destructurized formation titanium dioxide granule and the structure of Tin disulfide Particles dispersed, the latter by cryochemistry bath react into
OK, Tin disulfide growth in situ forms the structure of Tin disulfide nanometer sheet cladding titanium dioxide Mesoporous Spheres on Mesoporous Spheres surface.The present invention carries
In the composite of confession, Tin disulfide is evenly distributed on titanium dioxide granule or titania mesoporous ball, is a kind of novel light
Catalysis material, and by regulating SnS in different composites2And TiO2Molal weight ratio (that is, the atom of Sn Yu Ti
Mol ratio, is also denoted as nSn:nTi), the photocatalytic activity of adjustable composite material.
On the other hand, the invention provides the preparation method of a kind of above-mentioned titanium dioxide/Tin disulfide composite, including: press
Sulfur source, Xi Yuan and titanium dioxide mesoporous material are dispersed in water by stoichiometric proportion, use hydro-thermal method to protect at 120～250 DEG C
Temperature 1～96 hour, obtains described titanium dioxide/Tin disulfide composite.
Also, the present invention also provides for the preparation method of a kind of mesoporous TiO 2/Tin disulfide composite, including: based on chemistry
Sulfur source, Xi Yuan and titanium dioxide mesoporous material are dispersed in water by amount ratio, use chemical baths to be incubated 1～4 at 50～100 DEG C
Hour, obtain described mesoporous TiO 2/Tin disulfide composite.
The present invention can prepare the material of different-shape by hydro-thermal method and chemical baths, and preparation method is simple, is suitable for scale raw
Produce.In the present invention, sulfur source can be at least one in thioacetamide, thiourea.Described Xi Yuan can include anhydrous stannic chloride and
Butter of tin hydrate.
Present invention also offers a kind of above-mentioned titanium dioxide/Tin disulfide composite application in air cleaning, by described two
Titanium oxide/Tin disulfide composite or mesoporous TiO 2/Tin disulfide composite are coated on substrate formation coating, described coating
Can degrade under light illumination gaseous contaminant.
It is preferred that by scratch after titanium dioxide/Tin disulfide composite and ethanol mixing and ball milling obtain on substrate titanium dioxide/
Tin disulfide composite coating, or mesoporous TiO 2/Tin disulfide composite is scratched at substrate after ethanol mixing and ball milling
On obtain mesoporous TiO 2/Tin disulfide composite coating.
Also, it is preferred that described titanium dioxide/Tin disulfide composite or mesoporous TiO 2/Tin disulfide composite and ethanol
The ratio of quality be (1-10): (90-99).
It is preferred that the coated weight of described coating is every square metre 1～10g.
The present invention uses hydro-thermal method (chemical baths), at titanium dioxide surface growth in situ Tin disulfide granule, thus obtains two
Titanium oxide/Tin disulfide composite, and it is applied to formaldehyde degradation by photocatalytic oxidation process under visible ray, reach the mesh of indoor air purification
's.Simultaneously by regulating different Sn/Ti molar ratios, obtain the composite coating material that visible light catalysis activity is optimum.
Accompanying drawing explanation
Fig. 1 is the pure titinium dioxide Mesoporous Spheres SEM photograph of preparation in embodiment 1；
Fig. 2 is the titanium dioxide/Tin disulfide composite TEM photo of embodiment 2 preparation；
Fig. 3 is the titanium dioxide/Tin disulfide composite TEM photo of embodiment 3 preparation；
Fig. 4 is the titanium dioxide/Tin disulfide composite TEM photo of embodiment 4 preparation；
Fig. 5 is the titanium dioxide/Tin disulfide composite TEM photo of embodiment 5 preparation；
Composite coating Degradation Formaldehyde under visible light prepared by the material of embodiment 1～5 preparation of Fig. 6 difference nTi/nSn ratio is bent
Line；
Fig. 7 illustrates mesoporous TiO 2/Tin disulfide composite SEM photograph prepared by embodiment 6；
Fig. 8 illustrates mesoporous TiO 2/Tin disulfide composite SEM photograph prepared by embodiment 7；
Fig. 9 illustrates mesoporous TiO 2/Tin disulfide composite SEM photograph prepared by embodiment 8；
Figure 10 illustrates prepared by pure titania mesoporous ball prepared by embodiment 1 and 6～8 and mesoporous TiO 2/Tin disulfide composite
Composite coating Degradation Formaldehyde curve under visible light.
Detailed description of the invention
The present invention is further illustrated, it should be appreciated that accompanying drawing and following embodiment are merely to illustrate this below in conjunction with embodiment
Invention, and the unrestricted present invention.
The preparation method of titanium dioxide/Tin disulfide composite that the explanation present invention of following exemplary provides.
The preparation of titanium dioxide mesoporous material (titania mesoporous ball).Structure directing agent and chlorine is added in dehydrated alcohol
Change potassium, after dissolving, be slowly added to isopropyl titanate (or butyl titanate), and strong agitation, be centrifuged after standing and obtain titanium dioxide
Amorphous particle.Being dispersed in ethanol and distilled water by amorphous titanium dioxide granule, hydro-thermal method can get titanium dioxide mesoporous material.
(its SEM photograph sees Fig. 1, the most visible, and the size of titania mesoporous ball is 500～1000nm).
As a detailed example, structure directing agent and ion concentration reinforcing agent are dissolved in dehydrated alcohol, fully stir
Mix, be slowly added to organic titanium salt, centrifugal after standing, obtain white titania amorphous powder.Titanium dioxide amorphous powder is divided
Be dispersed in distilled water and dehydrated alcohol, fully dispersed after, transfer in reactor, hydro-thermal obtains mesoporous of crystalline titania
Grain.Wherein structure directing agent can be cetylamine, and ion concentration reinforcing agent is 0.1M Klorvess Liquid, organic titanium salt
Being isopropyl titanate, the consumption of three is 5.0g, 4.0ml and 20ml respectively, and wherein the consumption of ethanol is 1000ml, isopropanol
The addition speed of titanium is 10ml/min, and the time of standing is 8h.Middle amorphous titanium oxide granule, the consumption of distilled water and ethanol divides
Not Wei 2.0g, 20ml and 20ml, hydrothermal reaction condition be at 150 DEG C insulation 20h.
The preparation of titanium dioxide/Tin disulfide composite: He Xiyuan is (such as by sulfur source (such as thioacetamide or thiourea)
Butter of tin) it is dissolved in water (such as distilled water), add titanium dioxide mesoporous material, after being uniformly dispersed, use hydro-thermal method
At 120～250 DEG C, it is incubated 1～96 hour, obtains titanium dioxide/Tin disulfide composite.Described hydro-thermal method can be to use height
Pressure reactor is incubated 1～96 hour at 120～250 DEG C.
As a detailed example, titania mesoporous ball is dispersed in Xi Yuan and sulfur source aqueous solution, is uniformly dispersed
After, to transfer in reactor, hydro-thermal obtains titanium dioxide/Tin disulfide composite, the Xi Yuan wherein used and sulfur source and is respectively
The consumption of butter of tin and thioacetamide, titania mesoporous ball, butter of tin and thioacetamide is respectively 0.5g, 0～
0.4376g and 0～0.0188g, hydrothermal reaction condition is insulation 24h at 150 DEG C.
The preparation of mesoporous TiO 2/Tin disulfide composite: by sulfur source (such as thioacetamide or thiourea) He Xiyuan
(such as butter of tin), in water (such as distilled water), adds titanium dioxide mesoporous material, after being uniformly dispersed, uses chemistry
Bath method deposits 1～4 hour at 50～100 DEG C, obtain the mesoporous TiO 2 of Tin disulfide particles coat mesoporous TiO 2 ball/
Tin disulfide composite.
As a detailed example, titania mesoporous ball is dispersed in Xi Yuan and sulfur source aqueous solution, is uniformly dispersed
After, transfer in beaker, chemical bath obtains titanium dioxide/Tin disulfide composite, the Xi Yuan wherein used and sulfur in an oven
Source is respectively the consumption of butter of tin and thioacetamide, titanium dioxide mesoporous material, butter of tin and thioacetamide and is respectively
0.5g, 0～0.023g and 0～0.0188g, chemical bath reaction condition is insulation 3h at 75 DEG C.
Should be understood that the rate of charge of above-mentioned reaction raw materials can calculate according to the stoichiometric proportion of composite.Such as, sulfur source and
The mol ratio of Xi Yuan can be 2:1.The mol ratio of Xi Yuan and titania mesoporous ball can be according to nSn/nTi required in composite
Set.
The present invention is utilized respectively hydro-thermal method and chemical baths prepares the titanium dioxide/Tin disulfide composite of different-shape.See
Fig. 1～5,7 understand, when preparing composite by hydro-thermal reaction, prepared material no longer retains the knot of titania mesoporous ball
Structure, but titanium dioxide granule and generated in-situ Tin disulfide Particles dispersed, wherein the particle diameter of titanium dioxide granule is 15～50
Nm, the particle diameter of Tin disulfide granule is 5～10nm.See Fig. 1,7, it is known that, when preparing composite by chemical baths,
The composite obtained can retain the structure of titania mesoporous ball, i.e., titania mesoporous ball and generating at its surface in situ
Tin disulfide nanometer sheet is combined, and wherein the size of titania mesoporous ball is 500～1000nm.
Above-mentioned prepared titanium dioxide/Tin disulfide composite and/or mesoporous TiO 2/Tin disulfide composite are led to by the present invention
Cross ethanol dispersion, ball milling, blade coating, available titanium dioxide/Tin disulfide composite coating.Described mesoporous TiO 2/sulfuration
Tin composite material coating coated weight can be every square metre 1～10g.The mode that should be understood that above-mentioned blade coating is only example, Ke Yitong
Cross other approach and form coating, such as spraying, spin coating etc..Following exemplary ground explanation mesoporous TiO 2/Tin disulfide composite wood
The preparation method of material coating.
It is 1-that titanium dioxide hydro-thermal method obtained/Tin disulfide composite and ethanol mixing and ball milling 1-96h form solid content
The slurry of 10%, then scratch on substrate, obtain titanium dioxide/Tin disulfide composite coating.
The mesoporous TiO 2 obtained by chemical baths/Tin disulfide composite forms solid content with ethanol mixing and ball milling 1-96h
For the slurry of 1-10%, then scratch on substrate, obtain mesoporous TiO 2/Tin disulfide composite coating.
Or, mesoporous TiO 2/sulfur that titanium dioxide hydro-thermal method obtained/Tin disulfide composite and chemical baths obtain
Changing tin composite material and ethanol mixing and ball milling 1-96h and forming solid content is the slurry of 1-10%, then scratch obtain on substrate mesoporous
Titanium dioxide/Tin disulfide composite coating.
As a detailed example, by gained titanium dioxide/Tin disulfide composite, (described titanium dioxide/Tin disulfide is combined
Material can for the present invention titanium dioxide/Tin disulfide composite of preparing of two kinds of methods at least one) be dispersed in anhydrous
Ethanol exists, and ball milling obtains titanium dioxide/Tin disulfide composite alcohol dispersion liquid, is scratched on a glass by dispersion liquid and obtains two
Titanium oxide/Tin disulfide composite coating, wherein the consumption of mesoporous TiO 2/Tin disulfide composite and ethanol be respectively 0.5g and
15g, Ball-milling Time is 24h, and blade coating area is 5cm*10cm, and the quality of the composite of composite coating blade coating is 0.03g.
Present invention also offers a kind of titanium dioxide/Tin disulfide composite application in air cleaning.To above-mentioned any one
Planting composite coating and carry out formaldehyde degradation by photocatalytic oxidation process test under visible ray, wherein the concentration of formaldehyde can be 1.3ppmv, and the condition of care can
For 4*7W fluorescent lamp.See Fig. 6, it is known that, for hydro-thermal method prepare by titanium dioxide granule and Tin disulfide Particles dispersed shape
The composite become, wherein the photocatalytic activity of embodiment 3 (nSn/nTi=0.10:1) is the highest, embodiment 4
(nSn/nTi=0.15:1) photocatalytic activity is also above pure coating of titanium dioxide, embodiment 2 (nSn/nTi=0.05:1)
And the photocatalytic activity of embodiment 5 (nSn/nTi=0.20:1) is then slightly below pure coating of titanium dioxide.
Enumerate embodiment further below to describe the present invention in detail.It will similarly be understood that following example are served only for this
Bright it is further described, it is impossible to being interpreted as limiting the scope of the invention, those skilled in the art is according to the present invention's
Some nonessential improvement and adjustment that foregoing is made belong to protection scope of the present invention.The technique ginseng that following example is concrete
Number etc. is the most only an example in OK range, in the range of i.e. those skilled in the art can be done suitably by explanation herein
Select, and do not really want to be defined in the concrete numerical value of hereafter example.
Embodiment 1
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, be sufficiently stirred for
After, it is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains the non-crystalline flour of white titania
Body.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, being incubated 20h, filtering and washing, obtain titania mesoporous ball powder body, see Fig. 1 at 150 DEG C, it shows
Going out the SEM figure of gained titania mesoporous ball powder body, the most visible, gained titania mesoporous ball powder body has mesoporous knot
Structure, a size of 500～1000nm.
Take 0.5g pure titinium dioxide granular powder, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/ethanol and divide
Dissipating liquid, scratched on the glass plate of 5cm*10cm, be dried to obtain coating of titanium dioxide, the quality control of coating is
0.03g。
Tested by degradation of formaldehyde, composite coating is carried out visible light catalysis activity sign and performance optimization, composite coating
Quality is 0.03g, and the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.Compound painting in this example
The photocatalysis performance of layer is shown in Fig. 6.
Embodiment 2
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.1094g stannic chloride pentahydrate crystal and 0.0047g thioacetamide, dispersion
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml reactor, be incubated 24h at 150 DEG C, centrifuge washing is done
Dry, obtain titanium dioxide/Tin disulfide composite.In this example, Fig. 2 is shown in by the TEM photo of composite, therefrom visible gained
Composite pattern is graininess, no longer has meso-hole structure, and wherein titanium dioxide granule particle diameter is 15～50nm, Tin disulfide
The particle diameter of granule is 5～10nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.Composite coating in this example, light
Catalytic performance is shown in Fig. 6.
Embodiment 3
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.2188g butter of tin crystal and 0.0094g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml reactor, be incubated 24h at 150 DEG C, centrifuge washing is dried,
To titanium dioxide/Tin disulfide composite.In this example, Fig. 3 is shown in by the TEM photo of composite, therefrom visible gained composite wood
Material pattern is graininess, no longer has meso-hole structure, and wherein titanium dioxide granule particle diameter is 15～50nm, Tin disulfide granule
Particle diameter is 5～10nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example, the light of composite coating is urged
Change performance and see Fig. 6.
Embodiment 4
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.3282g butter of tin crystal and 0.0141g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml reactor, be incubated 24h at 150 DEG C, centrifuge washing is dried,
To titanium dioxide/Tin disulfide composite.In this example, Fig. 4 is shown in by the TEM photo of composite, therefrom visible gained composite wood
Material pattern is graininess, no longer has meso-hole structure, and wherein titanium dioxide granule particle diameter is 15～50nm, Tin disulfide granule
Particle diameter is 5～10nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example, the light of composite coating is urged
Change performance and see Fig. 6.
Embodiment 5
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 20h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.4376g butter of tin crystal and 0.0188g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml reactor, be incubated 24h at 150 DEG C, centrifuge washing is dried,
To titanium dioxide/Tin disulfide composite.In this example, Fig. 5 is shown in by the TEM photo of composite, therefrom visible gained composite wood
Material pattern is graininess, no longer has meso-hole structure, and wherein titanium dioxide granule particle diameter is 15～50nm, Tin disulfide granule
Particle diameter is 5～10nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example, the light of composite coating is urged
Change performance and see Fig. 6.
Embodiment 6
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.1094g butter of tin crystal and 0.0047g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml beaker, be incubated 3h at 75 DEG C, centrifuge washing is dried, and obtains two
Titanium oxide/Tin disulfide composite, its structure is Tin disulfide nanometer sheet cladding titanium dioxide Mesoporous Spheres Mp-TiO2/SnS2-0.05。
In this example, the SEM photograph of composite is shown in Fig. 7, and therefrom visible gained composite pattern still has meso-hole structure, wherein
The size of titania mesoporous ball is 500～1000nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example composite coating light
Catalytic performance is shown in Figure 10.
Embodiment 7
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.2188g butter of tin crystal and 0.0094g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml beaker, be incubated 3h at 75 DEG C, centrifuge washing is dried, and obtains two
Titanium oxide/Tin disulfide composite, its structure is Tin disulfide nanometer sheet cladding titanium dioxide Mesoporous Spheres Mp-TiO2/SnS2-0.10。
In this example, the SEM photograph of composite is shown in Fig. 8, and therefrom visible gained composite pattern still has meso-hole structure, wherein
The size of titania mesoporous ball is 500～1000nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example composite coating light
Catalytic performance is shown in Figure 10.
Embodiment 8
The cetylamine of 5.0g is dissolved in 1000ml dehydrated alcohol, adds 4.0ml 0.1M potassium chloride solution, after being sufficiently stirred for,
It is slowly added to 20ml isopropyl titanate with the speed of 10ml/min, is centrifuged after standing 8h and obtains white titania amorphous powder.
Take 2.0g titanium dioxide amorphous powder, be dispersed in 20ml ethanol and 20ml water, after being uniformly dispersed, transfer to
In 50ml reactor, it is incubated 20h, filtering and washing at 150 DEG C, obtains mesoporous titanium dioxide powder body.
Take 0.5g mesoporous titanium dioxide powder body, 0.3282g butter of tin crystal and 0.0141g thioacetamide, be dispersed in
In 30ml distilled water, after being uniformly dispersed, transferring in 50ml beaker, be incubated 3h at 75 DEG C, centrifuge washing is dried, and obtains two
Titanium oxide/Tin disulfide composite, its structure is Tin disulfide nanometer sheet cladding titanium dioxide Mesoporous Spheres Mp-TiO2/SnS2-0.15。
In this example, the SEM photograph of composite is shown in Fig. 9, and therefrom visible gained composite pattern still has meso-hole structure, wherein
The size of titania mesoporous ball is 500～1000nm.
Take 0.5g titanium dioxide/Tin disulfide composite granule, add 15ml dehydrated alcohol, ball milling 24h, obtain titanium dioxide/
Tin disulfide alcohol dispersion liquid, is scratched on the glass plate of 5cm*10cm, is dried to obtain the compound painting of titanium dioxide/Tin disulfide
Layer, the quality control of composite coating is 0.03g.
Being tested by degradation of formaldehyde, composite coating carries out the sign of visible light catalysis activity, the quality of composite coating is
0.03g, the initial concentration of formaldehyde is 1.3ppmv, and illumination condition is the fluorescent lamp of 4*7W.In this example composite coating light
Catalytic performance is shown in Figure 10, it is known that composite photocatalysis performance prepared by the present embodiment is higher than pure TiO2Coating.
Present invention also offers a kind of mesoporous TiO 2/Tin disulfide composite application in air cleaning.To above-mentioned reality
Executing composite coating prepared by example 6-8 and carry out formaldehyde degradation by photocatalytic oxidation process test under visible ray, wherein the concentration of formaldehyde can be
1.3ppmv, the condition of care can be 4*7W fluorescent lamp.See Figure 10 understand, for chemical baths prepare by meso-porous titanium dioxide
The composite that titanium ball and Tin disulfide nanometer sheet are compounded to form, the wherein photocatalytic activity of embodiment 7 (nSn/nTi=0.10:1)
The highest, the photocatalytic activity of embodiment 6 (nSn/nTi=0.05:1) and embodiment 8 (nSn/nTi=0.15:1) is also above pure
Coating of titanium dioxide (TiO2).In Figure 10, Mp is mesoporous abbreviation.
Claims (8)
1. titanium dioxide/Tin disulfide composite, it is characterized in that, described titanium dioxide/Tin disulfide composite includes titanium dioxide granule and the Tin disulfide granule grown by hydro-thermal method, SnS in described titanium dioxide/Tin disulfide composite at titanium dioxide granule surface in situ2And TiO2Molal weight than for (0.001～0.20): 1, preferably (0.09～0.14): 1, the particle diameter of described titanium dioxide granule is 10～50 nm, and the particle diameter of Tin disulfide granule is 5～10 nm.
2. mesoporous TiO 2/Tin disulfide composite, it is characterized in that, described mesoporous TiO 2/Tin disulfide composite includes titania mesoporous ball and grows Tin disulfide granule, SnS in described mesoporous TiO 2/Tin disulfide composite by chemical baths at titania mesoporous ball surface in situ2And TiO2Molal weight than for (0.001～0.20): 1, preferably (0.09～0.14): 1, a diameter of 500～1000 nm of described titania mesoporous ball.
3. the preparation method of titanium dioxide as claimed in claim 1/Tin disulfide composite, it is characterized in that, including: stoichiometrically sulfur source, Xi Yuan and titanium dioxide mesoporous material are dispersed in water, use hydro-thermal method to be incubated 1～96 hour at 120～250 DEG C, obtain described titanium dioxide/Tin disulfide composite.
4. the preparation method of mesoporous TiO 2 as claimed in claim 2/Tin disulfide composite, it is characterized in that, including: stoichiometrically sulfur source, Xi Yuan and titanium dioxide mesoporous material are dispersed in water, use chemical baths to be incubated 1～4 hour at 50～100 DEG C, obtain described mesoporous TiO 2/Tin disulfide composite.
5. according to the preparation method described in claim 3 or 4, it is characterised in that described sulfur source is at least one in thioacetamide, thiourea.
6. according to the preparation method according to any one of claim 3-5, it is characterised in that described Xi Yuan includes anhydrous stannic chloride and butter of tin hydrate.
7. the titanium dioxide described in a claim 1/Tin disulfide composite or the mesoporous TiO 2/Tin disulfide composite application in air cleaning described in claim 2, it is characterized in that, described titanium dioxide/Tin disulfide composite or mesoporous TiO 2/Tin disulfide composite are coated on substrate formation coating, and described coating can be degraded gaseous contaminant under light illumination.
Application the most according to claim 7, it is characterised in that the coated weight of described coating is every square metre 1～10g.
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