CN108855190A - The Ag-g-C that a kind of copper chlorophyll trisodium and eosin are sensitized altogether3N4The preparation method and applications of catalysis material - Google Patents
The Ag-g-C that a kind of copper chlorophyll trisodium and eosin are sensitized altogether3N4The preparation method and applications of catalysis material Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 46
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 42
- 229930002875 chlorophyll Natural products 0.000 title claims abstract description 42
- 235000019804 chlorophyll Nutrition 0.000 title claims abstract description 42
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 title claims abstract description 42
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 42
- 239000010949 copper Substances 0.000 title claims abstract description 42
- YQGOJNYOYNNSMM-UHFFFAOYSA-N eosin Chemical compound [Na+].OC(=O)C1=CC=CC=C1C1=C2C=C(Br)C(=O)C(Br)=C2OC2=C(Br)C(O)=C(Br)C=C21 YQGOJNYOYNNSMM-UHFFFAOYSA-N 0.000 title claims abstract description 42
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 230000001699 photocatalysis Effects 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010531 catalytic reduction reaction Methods 0.000 claims abstract description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000001354 calcination Methods 0.000 claims abstract description 4
- 239000004202 carbamide Substances 0.000 claims abstract description 4
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000007598 dipping method Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010792 warming Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 206010013786 Dry skin Diseases 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 2
- 229910052708 sodium Inorganic materials 0.000 claims 2
- 239000011734 sodium Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001802 infusion Methods 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 2
- 206010070834 Sensitisation Diseases 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 230000008313 sensitization Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000000975 dye Substances 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- JWQGJSCZCBBUSU-UHFFFAOYSA-N [Na].[Na].[Na].[Cu] Chemical compound [Na].[Na].[Na].[Cu] JWQGJSCZCBBUSU-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 240000008067 Cucumis sativus Species 0.000 description 1
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 1
- KSPIHGBHKVISFI-UHFFFAOYSA-N Diphenylcarbazide Chemical compound C=1C=CC=CC=1NNC(=O)NNC1=CC=CC=C1 KSPIHGBHKVISFI-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000004298 light response Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- B01J27/24—Nitrogen compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Catalysts (AREA)
Abstract
The invention discloses the Ag-g-C that a kind of copper chlorophyll trisodium and eosin are sensitized altogether3N4The preparation method and applications of catalysis material, it is placed on 20g urea is finely ground in porcelain crucible and closes the lid, 580 DEG C of calcining 2h are warming up to the heating rate of 5 DEG C/min again, are removed to obtain g-C with the concentrated sulfuric acid that mass concentration is 98% after cooled to room temperature3N4；By the g-C after 0.5g step S1 removing3N4It is dispersed with stirring in 50mL deionized water, adds 92mg AgNO3And the NaBH that 5mL concentration is 0.05g/mL is added dropwise after stirring 0.5h4Solution, continue stir 3h after centrifuge washing and in 60 DEG C drying obtain Ag-g-C for 24 hours3N4；The Ag-g-C that 30mg step S2 is obtained3N4It is added in the mixed solution of 100mL copper chlorophyll trisodium and eosin, is placed under dark surrounds in 40 DEG C of dipping 8h, the Ag-g-C for obtaining two-dimensional slice structure for 24 hours is dried in vacuo then at 70 DEG C3N4Catalysis material.The present invention has synthesized the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether using infusion process3N4Catalysis material shows preferable visible light catalysis activity, can be used in the Cr in photo catalytic reduction waste water（VI）.
Description
Technical field
The invention belongs to the synthesis technical fields of catalysis material, and in particular to a kind of copper chlorophyll trisodium and eosin are quick altogether
The Ag-g-C of change3N4The preparation method and applications of catalysis material.
Background technique
Photocatalitic Technique of Semiconductor refer to semiconductor under the irradiation of visible light or ultraviolet light, by Cucumber oxidation or
It is reduced into the process that low molecule intermediate product ultimately generates carbon dioxide, water and other harmless inorganic ions.Semiconductor in recent years
Catalysis material gets more and more people's extensive concerning, because it has the following advantages that：One, nontoxic, harmless non-corrosive, it can be repeatedly sharp
With；Two, photochemical catalyst utilizes sunlight that can react at room temperature, economical and effective, so photocatalysis technology is in environmental protection side
There is very wide application prospect in terms of face especially using energy source and the depollution of environment.
In numerous catalyst, g-C3N4Because its acidproof, alkaline-resisting, chemical composition and band structure are easy to the advantages that regulating and controlling
It is considered as most promising catalysis material.However, g-C3N4There is also the low, electron holes to visible light utilization efficiency to be easy to multiple
The disadvantages of conjunction.People have carried out a large amount of study on the modification thus, mainly include g-C3N4Pattern control, noble-metal-supported, partly lead
Bluk recombination, element doping and sensitizer sensitization etc., these methods achieve certain effect.
By suitable noble metal loading in g-C3N4Surface, can not only widen g-C3N4Spectral response range, optimize it
Absorbing ability, the electrons and holes difference localization that illumination can also generated is in noble metal and g-C3N4On, become electronics capture and falls into
Trap effectively improves the separative efficiency of electrons and holes, to improve semiconductor material to prevent the compound of light induced electron and hole
The photocatalytic activity of material.
Dye sensitization is one of a kind of simple and efficient way for widening semiconductor visible light response, wherein organic dyestuff
There is the following advantage when as sensitizer：One, there is big pi bond to be conjugated extended system, it is seen that optical wavelength absorption region is wide；Two,
Stronger electron donation；Three, molecular structure is easily modified to realize the regulation for absorbing band edge and electron donation；Four, can pass through
Chemical bond, hydrogen bond and other intermolecular forces（Pi-pi accumulation）It is adsorbed in semiconductor surface；Five, the total sensitization of dyestuff is easily realized.
Therefore catalysis material can directly be improved in the utilization rate of visible light region by dye sensitization, is urged to improve its visible light
Change activity.
In conclusion being directed to g-C3N4Disadvantage chooses noble silver and loads to g-C3N4Copper chlorophyll was chosen while upper again
Trisodium and eosin are sensitized it.On the one hand promote electron-hole to efficiently separate, on the other hand expand the material visible
The response in light region finally reaches the effect for improving photocatalysis efficiency.It is still untotal about copper chlorophyll trisodium and eosin at present
The Ag-g-C of sensitization3N4Catalysis material is to improve the relevant report of its photocatalysis performance.
Summary of the invention
The technical problem to be solved by the present invention is to provide the Ag-g-C that a kind of copper chlorophyll trisodium and eosin are sensitized altogether3N4Light is urged
The preparation method and applications for changing material, have synthesized the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether using infusion process3N4Light
Catalysis material, the catalysis material show preferable visible light catalysis activity, can be used in the Cr in photo catalytic reduction waste water
（VI）.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, and a kind of copper chlorophyll trisodium and eosin are sensitized altogether
Ag-g-C3N4The preparation method of catalysis material, it is characterised in that the specific steps are：
Step S1：It is placed on 20g urea is finely ground in porcelain crucible and closes the lid, then be warming up to the heating rate of 5 DEG C/min
580 DEG C of calcining 2h are removed to obtain g-C after cooled to room temperature with the concentrated sulfuric acid that mass concentration is 98%3N4；
Step S2：By the g-C after 0.5g step S1 removing3N4It is dispersed with stirring in 50mL deionized water, adds 92mg AgNO3
And the NaBH that 5mL concentration is 0.05g/mL is added dropwise after stirring 0.5h4Solution continues to stir centrifuge washing and in 60 DEG C of dryings after 3h
Ag-g-C is obtained for 24 hours3N4；
Step S3：The Ag-g-C that 30mg step S2 is obtained3N4It is added to the mixed solution of 100mL copper chlorophyll trisodium and eosin
In, it is placed under dark surrounds in 40 DEG C of dipping 8h, the green plain copper trisodium for obtaining two-dimensional slice structure for 24 hours is dried in vacuo then at 70 DEG C
The Ag-g-C being sensitized altogether with eosin3N4Catalysis material.
Preferably, the concentration of eosin is 30mg/L, copper chlorophyll in the mixed solution of the copper chlorophyll trisodium and eosin
The concentration of trisodium is 20mg/L.
The Ag-g-C that copper chlorophyll trisodium and eosin of the present invention are sensitized altogether3N4Catalysis material is in photo catalytic reduction
Cr in water（VI）In application.
The Ag-g-C that the present invention uses copper chlorophyll trisodium prepared by infusion process and eosin to be sensitized altogether3N4Catalysis material can
To effectively improve the separative efficiency of electrons and holes, semiconductor is widened in the response of visible light region, to improve visible light
Utilization efficiency, synthesis technology is simple, environmentally protective, is suitble to large-scale production, is expected to generate good social and economic benefit.
Detailed description of the invention
Fig. 1 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4Catalysis material
FESEM；
Fig. 2 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4The TEM of catalysis material schemes；
Fig. 3 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4The XRD spectrum of catalysis material；
Fig. 4 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4Catalysis material Uv-vis DRS
Map；
Fig. 5 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4The PL map of catalysis material；
Fig. 6 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4Catalysis material is to Cr（VI）'s
Reduction efficiency comparison diagram.
Specific embodiment
Above content of the invention is described in further details by the following examples, but this should not be interpreted as to this
The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on above content of the present invention belong to this hair
Bright range.
Embodiment 1
Step S1：It is placed on 20g urea is finely ground in porcelain crucible and closes the lid, then be warming up to the heating rate of 5 DEG C/min
580 DEG C of calcining 2h are removed to obtain g-C after cooled to room temperature with the concentrated sulfuric acid that mass concentration is 98%3N4；
Step S2：By the g-C after 0.5g step S1 removing3N4It is dispersed with stirring in 50mL deionized water, adds 92mg AgNO3
And the NaBH that 5mL concentration is 0.05g/mL is added dropwise after stirring 0.5h4Solution continues to stir centrifuge washing and in 60 DEG C of dryings after 3h
Ag-g-C is obtained for 24 hours3N4；
Step S3：The Ag-g-C that 30mg step S2 is obtained3N4It is added to the mixed solution of 100mL copper chlorophyll trisodium and eosin
In, it is placed under dark surrounds in 40 DEG C of dipping 8h, the green plain copper trisodium for obtaining two-dimensional slice structure for 24 hours is dried in vacuo then at 70 DEG C
The Ag-g-C being sensitized altogether with eosin3N4Catalysis material.
Fig. 1 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from the present embodiment 13N4Catalysis material
FESEM figure.It can be seen that the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether from FESEM figure3N4Catalysis material has two
Lamellar structure is tieed up, size is about dozens to a few hundred nanometers, and thickness is about 30-60nm.Sensitizer（Copper chlorophyll trisodium and eosin
Mixed solution）There is no change g-C3N4Lamellar structure, only lead to g-C3N4Some are reunited.
Fig. 2 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from this example 13N4The TEM of catalysis material
Figure.As can be seen from the figure black elemental silver is uniformly supported in the shape layer structure of the biggish g-C3N4 of specific surface area, and this
A little silver simple substance sizes are uniform, and partial size is smaller, and size is about 2-10nm.
Fig. 3 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from the present embodiment 13N4The XRD of catalysis material
Map.The peak that 2 θ are 27.7 ° in figure is g-C after removing3N4Characteristic diffraction peak corresponds to it（002）Crystal face；2 θ be 38.1 ° and
44.1 ° of peak is the characteristic diffraction peak of Ag, respectively corresponds Ag's（111）Crystal face and（200）Crystal face.
Fig. 4 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from the present embodiment 13N4The Uv- of catalysis material
Vis DRS map.As seen from the figure, g-C3N4Absorption band edge be about 460nm, and after eosin and copper chlorophyll trisodium are sensitized altogether
Ag-g-C3N4Catalysis material has absorption in the visible light region greater than 460nm, this illustrates the Ag-g-C being sensitized altogether3N4Light is urged
Visible light can be absorbed and utilized by changing material, improve photocatalytic activity.
Fig. 5 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from the present embodiment 13N4The PL of catalysis material
Map.Ag-g-C after eosin and copper chlorophyll trisodium are sensitized altogether as seen from the figure3N4Catalysis material fluorescence intensity is substantially reduced,
Ag-g-C after the total sensitization of this explanation3N4Electronics and hole-recombination probability ratio g-C in catalysis material3N4It is low, show photoproduction current-carrying
Sub- separative efficiency improves, and further demonstrates the later Ag-g-C of total sensitization3N4The photocatalytic activity of catalysis material significantly mentions
It rises.
Embodiment 2
Using 500W xenon lamp as light source, the filter plate for being equipped with 420nm obtains visible light, i.e. light of the wavelength less than 420nm cannot
Pass through, ultraviolet light interference can be effectively prevented from, is around the internal quartzy cold hydrazine for being connected with cooling water.Using recirculated cooling water to light
Source cooling, makes reaction in isoperibol.Experimentation is as follows：It is in quartz test tube that leaf made from 40mg embodiment 1 is green
The Ag-g-C that plain copper trisodium and eosin are sensitized altogether3N4It is 50mg/L's that catalysis material, which is dispersed in and fills 40mL mass concentration,
Cr（VI）In aqueous solution, the citric acid of 1mL concentration 100mg/mL is added in each quartz ampoule, is placed in 30min in dark and reaches suction
Attached-desorption equilibrium.Light source is opened, 3.5mL sample is taken at regular intervals after illumination, takes supernatant liquor after being centrifuged,
Cr is measured with diphenyl carbazide spectrophotometry（VI）Concentration variation, to evaluate the visible light photocatalysis performance of sample.
Fig. 6 is the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from embodiment 13N4Catalysis material is visible
To Cr under light（VI）Photo catalytic reduction efficiency comparative figure.As seen from the figure, eosin and copper chlorophyll trisodium are sensitized altogether
Ag-g-C3N4The Cr that catalysis material is 50mg/L to concentration after illumination 40min（VI）Reduction rate substantially can achieve
100%, and Ag-g-C3N4The Cr for being 50mg/L to concentration after illumination 40min（VI）Reduction rate be about 40%, copper chlorophyll
The Ag-C of trisodium and the single sensitization of eosin3N4To Cr（VI）Effect of the reduction effect than total sensitization it is poor, and pure g-C3N4In light
According to the Cr for being after forty minutes 50mg/L to concentration（VI）Reduction rate only have about 20%.
Embodiment above describes basic principles and main features of the invention and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (3)
1. the Ag-g-C that a kind of copper chlorophyll trisodium and eosin are sensitized altogether3N4The preparation method of catalysis material, it is characterised in that tool
Body step is：
Step S1：It is placed on 20g urea is finely ground in porcelain crucible and closes the lid, then be warming up to the heating rate of 5 DEG C/min
580 DEG C of calcining 2h are removed to obtain g-C after cooled to room temperature with the concentrated sulfuric acid that mass concentration is 98%3N4；
Step S2：By the g-C after 0.5g step S1 removing3N4It is dispersed with stirring in 50mL deionized water, adds 92mg AgNO3
And the NaBH that 5mL concentration is 0.05g/mL is added dropwise after stirring 0.5h4Solution continues to stir centrifuge washing and in 60 DEG C of dryings after 3h
Ag-g-C is obtained for 24 hours3N4；
Step S3：The Ag-g-C that 30mg step S2 is obtained3N4It is added to the mixed solution of 100mL copper chlorophyll trisodium and eosin
In, it is placed under dark surrounds in 40 DEG C of dipping 8h, the copper chlorophyll three for obtaining two-dimensional slice structure for 24 hours is dried in vacuo then at 70 DEG C
The Ag-g-C that sodium and eosin are sensitized altogether3N4Catalysis material.
2. the Ag-g-C that copper chlorophyll trisodium according to claim 1 and eosin are sensitized altogether3N4The preparation side of catalysis material
Method, it is characterised in that：The concentration of eosin is 30mg/L, copper chlorophyll three in the mixed solution of the copper chlorophyll trisodium and eosin
The concentration of sodium is 20mg/L.
3. the Ag-g-C that copper chlorophyll trisodium and eosin are sensitized altogether made from method according to claim 1 or 23N4Light is urged
Change material Cr in photo catalytic reduction water（VI）In application.
Priority Applications (1)
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