CN106378155A - A low-temperature preparing method for a CdS/TiO2 nanometer composite material - Google Patents
A low-temperature preparing method for a CdS/TiO2 nanometer composite material Download PDFInfo
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- CN106378155A CN106378155A CN201610699403.9A CN201610699403A CN106378155A CN 106378155 A CN106378155 A CN 106378155A CN 201610699403 A CN201610699403 A CN 201610699403A CN 106378155 A CN106378155 A CN 106378155A
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- necked flask
- cds
- solution
- tio2
- tio
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title abstract description 11
- 239000002131 composite material Substances 0.000 title abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 8
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002114 nanocomposite Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 3
- 238000004448 titration Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 abstract 2
- 238000002156 mixing Methods 0.000 abstract 1
- 238000009210 therapy by ultrasound Methods 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000001699 photocatalysis Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- HJCMDXDYPOUFDY-WHFBIAKZSA-N Ala-Gln Chemical compound C[C@H](N)C(=O)N[C@H](C(O)=O)CCC(N)=O HJCMDXDYPOUFDY-WHFBIAKZSA-N 0.000 description 1
- 108010044940 alanylglutamine Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 208000017983 photosensitivity disease Diseases 0.000 description 1
- 231100000434 photosensitization Toxicity 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- STZCRXQWRGQSJD-UHFFFAOYSA-M sodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(C)C)=CC=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-UHFFFAOYSA-M 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
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- 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
Abstract
A low-temperature preparing method for a CdS/TiO2 nanometer composite material is provided. The method includes preparing TiO2 powder firstly, mixing 12 g of the TiO2 powder with 50 mL of a solution of sodium hydroxide and thiourea, stirring for 10 min, adding the mixture into a three-neck flask, adding dropwise 20 mL of a CdCl2 solution having a concentration of 0.1 mol into the three-neck flask, reacting at 60 DEG C for 90 min in a water bath, performing ultrasonic treatment for 30 min, centrifuging, washing, and drying at 100 DEG C to obtain the CdS/TiO2. A beneficial effect of the method is that the method is simple in synthesis process, mild in reaction conditions, low in production cost and good in repeatability.
Description
Technical field
The present invention relates to material synthesis method, a kind of particularly low temperature preparation CdS/TiO2The preparation of nano composite material
Method.
Background technology
Develop rapidly with industrial, environmental pollution is increasingly serious.Photocatalitic Technique of Semiconductor is because it is with low cost, behaviour
Make easy, non-secondary pollution and receive much concern.The semiconductor catalyst with photocatalysis property has TiO2, ZnO, Zn
S, CdS and Fe2O3 etc..TiO2 due to cheap and easy to get, catalysis activity is good, the spy such as chemical stability is high, safety non-toxic
Point, has broad application prospects for the organic pollution in light degradation environment and poisonous substance.But TiO2 has wider
Band gap（Anatase 3.2eV）, can only be excited with ultraviolet source, only have 3%～5% to the utilization rate of sunlight, greatly
The application limiting TiO2.Therefore by being modified to TiO2, extend its response range to sunlight, improve too
The utilization rate of sunlight becomes study hotspot.
The method commonly used at present has photosensitization, noble metal loading, modification by ion-doping, composite semiconductor etc..Quasiconductor Cd
The energy gap of S is 2.42eV, and excitation wavelength is less than or equal to 495nm, has good assimilation effect to sunlight.But
Single CdS catalytic performance is unsatisfactory, and because its light induced electron and hole-recombination energy Dipeptiven are strong, stability is poor.Compound
CdS/TiO2 has merged the respective advantage of TiO2 and CdS, good stability and the responsiveness height to sunlight.Too
Under the irradiation of sunlight, because the conduction band energy position of CdS is higher than TiO2, light induced electron CdS being excited produce is transferred to
On the conduction band of TiO2, and photohole has been stayed in the valence band of CdS, realizes efficiently separating of light induced electron and hole,
Thus improve TiO2 photocatalysis efficiency.Preparation CdS/TiO2 photocatalyst closes frequently with sol-gel process, hydro-thermal
Cheng Fa, microemulsion method etc..The CdS/TiO2 of these methods preparation is each advantageous, but is required for further calcining, very
Easily cause reunion.
Content of the invention
The technical problem to be solved is to provide a kind of low temperature preparation CdS/TiO2The system of nano composite material
Preparation Method, provides a kind of new synthetic method.
The synthetic method that the present invention adopts, comprises the steps：
A, measure 20mL dehydrated alcohol and mix in the beaker of 250mL with 48mL distilled water, after stirring, use 8mL/L
Salpeter solution titration, adjust pH=3, obtain solution A, and by solution A add there-necked flask in；Measure 20mL more no
Water-ethanol and 10mLTTIP are added in constant pressure funnel, slowly shake up, and be designated as B liquid, there-necked flask is fixed on
On thermostat water bath, add stirrer, bath temperature is adjusted at 60 DEG C, Dropping funnel is fixed on there-necked flask, by B liquid
It is added drop-wise in there-necked flask with the speed of 50/min, and open stirring simultaneously, after reaction 90min, more ultrasonic 30mi
N, through ageing, washing, after alcohol is washed, obtains TiO after 100 DEG C of drying2Powder；
B, by 12gTiO2Powder is mixed with 50mL sodium hydroxide and thiourea solution, is added to there-necked flask after stirring 10min
In, by the CdCl of 0.1mol2Solution 20mL is added dropwise in there-necked flask, reacts 90min, then at 60 DEG C of water-bath
Ultrasonic 30min, centrifuge washing, obtain CdS/TiO after 100 DEG C of dryings2.
The invention has the beneficial effects as follows：Synthesis technique is simple, and reaction condition is gentle, and production cost is relatively low, favorable repeatability.
Specific embodiment
Further illustrate present disclosure below in conjunction with example, as known by the technical knowledge, the present invention also can be by other
The scheme without departing from the technology of the present invention feature describing, therefore all within the scope of the present invention or in the equivalent scope of the invention
Change and be all included in the invention.
Embodiment：
A, measure 20mL dehydrated alcohol and mix in the beaker of 250mL with 48mL distilled water, after stirring, use 8mL/L
Salpeter solution titration, adjust pH=3, obtain solution A, and by solution A add there-necked flask in；Measure 20mL more no
Water-ethanol and 10mLTTIP are added in constant pressure funnel, slowly shake up, and be designated as B liquid, there-necked flask is fixed on
On thermostat water bath, add stirrer, bath temperature is adjusted at 60 DEG C, Dropping funnel is fixed on there-necked flask, by B liquid
It is added drop-wise in there-necked flask with the speed of 50/min, and open stirring simultaneously, after reaction 90min, more ultrasonic 30mi
N, through ageing, washing, after alcohol is washed, obtains TiO after 100 DEG C of drying2Powder；
B, by 12gTiO2Powder is mixed with 50mL sodium hydroxide and thiourea solution, is added to there-necked flask after stirring 10min
In, by the CdCl of 0.1mol2Solution 20mL is added dropwise in there-necked flask, reacts 90min, then at 60 DEG C of water-bath
Ultrasonic 30min, centrifuge washing, obtain CdS/TiO after 100 DEG C of dryings2.
By experiment, CdS/TiO2Composite disperses more uniform, TiO2Existed with Detitanium-ore-type, CdS is deposited with hexagonal phase
?.CdS and TiO2After compound, expand the scope of photoresponse, show very good photocatalytic activity.Use CdS/TiO2Fall
Solution methyl orange solution, simulated solar light irradiation 5h degradation rate reaches 69.88%, and ultraviolet light 5h degradation rate reaches
98.10%.
Claims (1)
1. a kind of low temperature preparation CdS/TiO2The preparation method of nano composite material, comprises the steps：
A, measure 20mL dehydrated alcohol and mix in the beaker of 250mL with 48mL distilled water, after stirring, use 8mL/L
Salpeter solution titration, adjust pH=3, obtain solution A, and by solution A add there-necked flask in；Measure 20mL more no
Water-ethanol and 10mLTTIP are added in constant pressure funnel, slowly shake up, and be designated as B liquid, there-necked flask is fixed on
On thermostat water bath, add stirrer, bath temperature is adjusted at 60 DEG C, Dropping funnel is fixed on there-necked flask, by B liquid
It is added drop-wise in there-necked flask with the speed of 50/min, and open stirring simultaneously, after reaction 90min, more ultrasonic 30mi
N, through ageing, washing, after alcohol is washed, obtains TiO after 100 DEG C of drying2Powder；
B, by 12gTiO2Powder is mixed with 50mL sodium hydroxide and thiourea solution, is added in there-necked flask after stirring 10min,
CdCl by 0.1mol2Solution 20mL is added dropwise in there-necked flask, reacts 90min, Ran Houchao at 60 DEG C of water-bath
Sound 30min, centrifuge washing, obtain CdS/TiO after 100 DEG C of dryings2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699403.9A CN106378155A (en) | 2016-08-22 | 2016-08-22 | A low-temperature preparing method for a CdS/TiO2 nanometer composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610699403.9A CN106378155A (en) | 2016-08-22 | 2016-08-22 | A low-temperature preparing method for a CdS/TiO2 nanometer composite material |
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| Publication Number | Publication Date |
|---|---|
| CN106378155A true CN106378155A (en) | 2017-02-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610699403.9A Pending CN106378155A (en) | 2016-08-22 | 2016-08-22 | A low-temperature preparing method for a CdS/TiO2 nanometer composite material |
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| Country | Link |
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| CN (1) | CN106378155A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282072A (en) * | 2017-06-30 | 2017-10-24 | 中南大学 | A kind of cadmium sulfide nano titania compound and its preparation method and application |
| CN107352616A (en) * | 2017-06-30 | 2017-11-17 | 中南大学 | A kind of method using cadmium wastewater photocatalytic degradation Ciprofloxacin |
| CN108579766A (en) * | 2018-04-17 | 2018-09-28 | 华东理工大学 | A kind of preparation method for the cadmium sulfide based composite catalyst handling industrial wastewater |
-
2016
- 2016-08-22 CN CN201610699403.9A patent/CN106378155A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 杨宗谕等: "低温制备CdS／TiO2纳米复合材料及其光催化性能研究", 《化工新型材料》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282072A (en) * | 2017-06-30 | 2017-10-24 | 中南大学 | A kind of cadmium sulfide nano titania compound and its preparation method and application |
| CN107352616A (en) * | 2017-06-30 | 2017-11-17 | 中南大学 | A kind of method using cadmium wastewater photocatalytic degradation Ciprofloxacin |
| CN108579766A (en) * | 2018-04-17 | 2018-09-28 | 华东理工大学 | A kind of preparation method for the cadmium sulfide based composite catalyst handling industrial wastewater |
| CN108579766B (en) * | 2018-04-17 | 2020-10-20 | 华东理工大学 | Preparation method of cadmium sulfide-based composite catalyst capable of treating industrial wastewater |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170208 |
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