CN116493025A - Type II heterojunction ReS 2 /CdIn 2 S 4 Preparation method of composite catalyst and application of composite catalyst in photocatalytic hydrogen production - Google Patents
Type II heterojunction ReS 2 /CdIn 2 S 4 Preparation method of composite catalyst and application of composite catalyst in photocatalytic hydrogen production Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 23
- 230000001699 photocatalysis Effects 0.000 title abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title abstract description 6
- 239000001257 hydrogen Substances 0.000 title abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 title abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005286 illumination Methods 0.000 claims abstract description 12
- 230000003197 catalytic effect Effects 0.000 claims abstract description 5
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 8
- 235000014655 lactic acid Nutrition 0.000 claims description 6
- 239000004310 lactic acid Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009210 therapy by ultrasound Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 abstract description 13
- 229910021641 deionized water Inorganic materials 0.000 abstract description 13
- 238000007146 photocatalysis Methods 0.000 abstract description 6
- 239000011941 photocatalyst Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 238000005470 impregnation Methods 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 22
- 229910052724 xenon Inorganic materials 0.000 description 9
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 238000001291 vacuum drying Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 229910021617 Indium monochloride Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- APHGZSBLRQFRCA-UHFFFAOYSA-M indium(1+);chloride Chemical compound [In]Cl APHGZSBLRQFRCA-UHFFFAOYSA-M 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- KZEVSDGEBAJOTK-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[5-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CC=1OC(=NN=1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O KZEVSDGEBAJOTK-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
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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
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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
- 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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- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/04—Mixing
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
- B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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Abstract
The invention belongs to the field of photocatalysts, and in particular relates to a type II heterojunction ReS 2 /CdIn 2 S 4 A preparation method of a composite catalyst and application of photocatalysis to hydrogen production. Preparation of CdIn 2 S 4 Then preparing ReS 2 Will ReS 2 And CdIn 2 S 4 Dissolving in deionized water, and synthesizing ReS by simple impregnation method 2 /CdIn 2 S 4 The composite catalyst is used for catalyzing and producing H under the synergistic effect of illumination and stirring 2 。ReS 2 /CdIn 2 S 4 Catalytic production of H by composite catalyst 2 The rate is far higher than CdIn 2 S 4 And ReS 2 The invention has the characteristics of simple synthesis, green pollution-free performance, strong operability, rich active sites and excellent stability, no secondary pollution and the like.
Description
Technical Field
The invention belongs to the technical field of photocatalysis, and in particular relates to a type II heterojunction ReS 2 /CdIn 2 S 4 H production by (RS/CIS) composite catalyst 2 Is used in the application of (a).
Background
Among the semiconductor photocatalysts, metal sulfides are attracting attention due to their suitable band gap. Ternary sulfides having strong visible light absorption and a narrow forbidden band are currently being the focus of research. The band gap is about 2.0eV and the conduction band potential ratio H + /H 2 The reduction potential is more negative, so the narrow bandgap semiconductor CdIn 2 S 4 Can be used for photocatalytic hydrogen production, but CdIn 2 S 4 The high rate charge recombination of (2) has very low water decomposition capacity. Literature reports that constructing heterostructures is an effective method for improving photocatalytic activity, can reduce recombination probability of surface electron-hole pairs, and modifies CdIn 2 S 4 Surface defects in the crystal. CdIn 2 S 4 The nano material has the advantages of simple preparation, low cost and good light stability, and is applied to various aspects such as light emitting diodes, photocatalysts, solar cells, photoelectric applications and the like.
Type ii heterojunction is the most desirable structure. When light irradiates the surface of the type II heterojunction photocatalyst (FIG. 6), electrons of B are transited from the Valence Band (VB) to the Conduction Band (CB) of B, then the electrons of B are transferred to the conduction band of A, and holes h of A + And the photo-generated electron-hole pair can be separated and transferred to an active reaction site more quickly by transferring the photo-generated electron-hole pair to a valence band of B, so that the photocatalysis efficiency is effectively improved. Here we synthesized an excellent type II heterojunction ReS 2 /CdIn 2 S 4 (RS/CIS) photocatalyst capable of effectively improving H production 2 Efficiency is improved. Under light and stirringUnder the combined action of (a), the optimized ReS 2 /CdIn 2 S 4 H production 2 The efficiency is higher than that of independent photocatalysis and stirring catalysis.
Disclosure of Invention
The invention aims to provide a type II ReS 2 /CdIn 2 S 4 Preparation method of composite catalyst and application of composite catalyst in photocatalytic H production 2 Has high catalytic activity and better stability.
The technical scheme of the invention is as follows: the invention provides a type II ReS 2 /CdIn 2 S 4 The preparation method of the composite catalyst comprises the following steps:
(1)CdIn 2 S 4 is prepared from the following steps:
will CH 4 N 2 S、CdCl 2 ·2.5H 2 O and InCl 3 ·4H 2 O is dispersed in deionized water in a molar ratio of 4:1:2 and is dissolved by strong stirring, so that a transparent solution is obtained. Transferring into a polytetrafluoroethylene-lined hydrothermal kettle, and keeping the temperature at 180 ℃ for 48 hours. After the completion, cooling to room temperature, thoroughly washing with deionized water and absolute ethyl alcohol, and vacuum drying at 60 ℃ for 24 hours to obtain orange powder which is CdIn 2 S 4 。
(2)ReS 2 Is prepared from the following steps:
the molar ratio was set to 2: NH of 9 4 ReO 4 And CH (CH) 4 N 2 S is mixed together, then dissolved in deionized water, fully dispersed and subjected to hydrothermal reaction, and the reaction temperature is 240 ℃ and is kept for 24 hours. Cooling to room temperature after the completion, thoroughly washing with deionized water and absolute ethanol, and vacuum drying at 60deg.C for 24 hr to obtain black powder (ReS) 2 。
(3)ReS 2 /CdIn 2 S 4 Preparation of the composite catalyst:
ReS is to 2 Catalyst and CdIn 2 S 4 The catalyst is dissolved in deionized water, and ultrasonic treatment and stirring are carried out. Filtering, washing and drying at room temperature to obtain yellow-green powder, namely ReS 2 /CdIn 2 S 4 A composite catalyst. Added ReS 2 The mass is CdIn 2 S 4 1 of mass％～25％。
As preferable: ultrasonic treatment is carried out for 1h, the ultrasonic power is 240w, the stirring speed is 400r/min, and the stirring is carried out for 4h. ReS (ReS) 2 The mass is CdIn 2 S 4 12% of the mass.
ReS 2 /CdIn 2 S 4 Composite catalyst as piezoelectric photocatalyst for producing H in photocatalytic lactic acid aqueous solution 2 Is applied to: weighing ReS 2 /CdIn 2 S 4 Adding composite catalyst into water, ultrasonic dispersing, adding lactic acid, introducing N 2 Sealing under the common conditions of ultrasonic or stirring and illumination to produce H 2 。
The conditions of the ultrasonic wave and stirring are not limited, and may be selected as required.
ReS 2 /CdIn 2 S 4 The dosage of the composite catalyst in water is 2 mg-5 mg/18mL.
The volume ratio of lactic acid to water was 1:9.
The invention has the advantages that:
(1) The catalyst provided by the invention is ReS 2 /CdIn 2 S 4 The composite catalyst has the characteristics of simple synthesis conditions, easy operation, rapidness, high efficiency, energy conservation, environmental protection and the like.
(2)ReS 2 Is not changed by introducing CdIn 2 S 4 No other diffraction peaks appear indicating CdIn 2 S 4 /ReS 2 The composite material has excellent crystallinity and purity.
(3)CdIn 2 S 4 /ReS 2 The composite catalyst produces H under the effects of pure photocatalysis, pure stirring catalysis and stirring-light synergy 2 Wherein the optimal catalytic performance under the stirring-light common condition is pure CdIn 2 S 4 41 times the catalyst.
(4)CdIn 2 S 4 The photoluminescence recombination rate of (C) is obviously higher than that of 12 percent ReS 2 /CdIn 2 S 4 Thus 12% ReS 2 /CdIn 2 S 4 The carrier mobility of the composite catalyst is far higher than that of CdIn 2 S 4 From the slaveAnd the photocatalysis performance is effectively improved.
Drawings
FIG. 1 is a ReS synthesized in example 1 2 /CdIn 2 S 4 Scanning electron microscope image of the catalyst.
FIG. 2 shows the synthesis of different ratios of ReS in examples 1, 4 and 7 and comparative examples 1 and 4 2 /CdIn 2 S 4 Composite material and CdIn 2 S 4 、ReS 2 Is a XRD pattern of (C).
FIG. 3 shows the synthesis of different ratios of ReS in examples 1, 4 and 7 and comparative examples 1 and 4 under the simultaneous action of stirring and light 2 /CdIn 2 S 4 Composite material, cdIn 2 S 4 And ReS 2 H production 2 Is a performance graph of (a).
FIG. 4 shows the different ratios of ReS with stirring only 2 /CdIn 2 S 4 、CdIn 2 S 4 And ReS 2 H production 2 Is a performance graph of (a).
FIG. 5 is a graph of different ratios of ReS under illumination only 2 /CdIn 2 S 4 、CdIn 2 S 4 And ReS 2 H production 2 Is a performance graph of (a).
FIG. 6 is a graph of a type II heterojunction photocatalytic hydrogen production mechanism.
Detailed Description
The present invention is not limited to the following embodiments, and those skilled in the art can implement the present invention in various other embodiments according to the present invention, or simply change or modify the design structure and thought of the present invention, which fall within the protection scope of the present invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The H production 2 The efficiency is calculated according to the following formula:
r: h production 2 Rate, unit: mu mol/(g·h)
V: hydrogen volume, unit: mu L (mu L)
m: catalyst mass, unit: g
t: reaction time, unit: h is a
Example 1
The molar ratio was set to 2: NH of 9 4 ReO 4 And CH (CH) 4 N 2 S is mixed together, then dissolved in deionized water, fully dispersed and subjected to hydrothermal reaction, and the reaction temperature is 240 ℃ and is kept for 24 hours. Cooling to room temperature after the completion, thoroughly washing with deionized water and absolute ethanol, and vacuum drying at 60deg.C for 24 hr to obtain black powder (ReS) 2 。
Will be 0.609g CH 4 N 2 S、0.4566g CdCl 2 ·2.5H 2 O、1.1728g InCl 3 ·4H 2 O was dissolved in 60mL deionized water with vigorous stirring to give a clear solution. Transferring into a polytetrafluoroethylene-lined hydrothermal kettle, and keeping the temperature at 180 ℃ for 48 hours. After the completion, cooling to room temperature, thoroughly washing with deionized water and absolute ethyl alcohol, and vacuum drying at 60 ℃ for 24 hours to obtain orange powder which is CdIn 2 S 4 A catalyst.
The ReS is carried out 2 Catalyst and CdIn 2 S 4 The catalyst was dissolved in deionized water and sonicated for 1h with an ultrasonic power of 240w. Stirring speed is 400r/min, and stirring is carried out for 4h. Filtering, washing and drying at room temperature to obtain yellow-green powder, namely ReS 2 /CdIn 2 S 4 A composite catalyst. Wherein ReS 2 The mass is CdIn 2 S 4 12% of the mass.
12％ReS 2 /CdIn 2 S 4 The application method of the composite catalyst comprises the following steps:
weigh 5mg of 12% ReS 2 /CdIn 2 S 4 The catalyst was compounded, 18mL of water was added and dispersed ultrasonically for half an hour to allow the catalyst to disperse uniformly in the water. Then 2mL of lactic acid was added followed by half an hour N 2 Finally, the mixture was sealed for 2h under stirring (400 r/min) and illumination (55 w xenon lamp simulated sunlight). After the experiment was completed, the gas in the 0.5mL tube was extracted, the peak area was detected by a gas chromatograph, and H production was calculated 2 The rate is analyzed and calculated to obtain the H production 2 The rate was 1646.67. Mu. Mol/(g.h).
Example 2
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 1% by mass, and the other preparation methods are the same as in example 1.
The procedure is as in example 1, example 2 for the preparation of 1% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 65.31. Mu. Mol/(g.h).
Example 3
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 5% by mass, and the other preparation methods are the same as in example 1.
The procedure is as in example 1, example 3, with 5% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 170.61. Mu. Mol/(g.h).
Example 4
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 10% by mass, and the other preparation methods are the same as in example 1.
The method of application is the same as in example 1, 10% ReS prepared in example 4 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 922.1. Mu. Mol/(g.h).
Example 5
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 15% by mass, and the other preparation methods are the same as in example 1.
The procedure is as in example 1, example 5 for the preparation of 15% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 1387.12. Mu. Mol/(g.h).
Example 6
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 Quality of20% and the other preparation methods are the same as in example 1.
Application method same as in example 1, 20% ReS prepared in example 6 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 792.22. Mu. Mol/(g.h).
Example 7
Compared with example 1, the difference is that: reS is added in the preparation process 2 The mass is CdIn 2 S 4 25% by mass, and the other preparation methods are the same as in example 1.
The procedure is as in example 1, example 7 for the preparation of 25% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 488.12. Mu. Mol/(g.h).
Comparative example 1
Compared with example 1, the difference is that: stirring (400 r/min) +under illumination (55 w xenon lamp simulated sunlight) in the application method is changed to stirring (400 r/min) only, and the other steps are the same as in example 1.ReS (ReS) 2 /CdIn 2 S 4 Catalyst production H 2 The rate was 17.81. Mu. Mol/(g.h).
Comparative example 2
Compared with example 1, the difference is that: the conditions in the application method under stirring (400 r/min) and illumination (55 w xenon lamp simulated sunlight) closed for 2h are changed into illumination only (55 w xenon lamp simulated sunlight), and the other steps are the same as in example 1.ReS (ReS) 2 /CdIn 2 S 4 Catalyst production H 2 The rate was 26.35. Mu. Mol/(g.h).
Comparative example 3
Compared with example 2, the difference is that: the conditions in the application method were changed to stirring only (400 r/min), otherwise the same as in example 2.1% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 15.09. Mu. Mol/(g.h).
Comparative example 4
Compared with example 2, the difference is that: the conditions in the application method were changed to illumination only (55 w xenon lamp simulated sunlight), otherwise as in example 2.1% ReS 2 /CdIn 2 S 4 Catalyst production H 2 The rate was 15.29. Mu. Mol/(g.h).
Comparative example 5
Compared with example 5, the difference is that: the conditions in the application method were changed to stirring only (400 r/min), and the same as in example 5 was followed. 15% ReS 2 /CdIn 2 S 4 H production by composite catalyst 2 The rate was 16.59. Mu. Mol/(g.h).
Comparative example 6
Compared with example 5, the difference is that: the conditions in the application method were changed to illumination only (55 w xenon lamp simulated sunlight), otherwise as in example 5. 15% ReS 2 /CdIn 2 S 4 Catalyst production H 2 The rate was 18.34. Mu. Mol/(g.h).
Comparative example 7
Will be 0.609g CH 4 N 2 S、0.4566g CdCl 2 ·2.5H 2 O、1.1728g InCl 3 ·4H 2 O was dissolved in 60mL deionized water with vigorous stirring to give a clear solution. Transferring into a polytetrafluoroethylene-lined hydrothermal kettle, and keeping the temperature at 180 ℃ for 48 hours. After the completion, cooling to room temperature, thoroughly washing with deionized water and absolute ethyl alcohol, and vacuum drying at 60 ℃ for 24 hours to obtain orange powder which is CdIn 2 S 4 A catalyst.
Weigh 5mg CdIn 2 S 4 The catalyst was dispersed supersonically for half an hour by adding 18mL of water. Then 2mL of lactic acid was added followed by half an hour N 2 Finally, the mixture was sealed under stirring (400 r/min) and under illumination (55 w xenon lamp simulated sunlight) for 1h. After the experiment was completed, the gas in the 0.5mL tube was extracted, the peak area was detected by a gas chromatograph, and H production was calculated 2 The rate is analyzed and calculated to obtain the H production 2 The rate was 41.3. Mu. Mol/(g.h).
Comparative example 8
Compared with comparative example 7, the difference is that: the conditions in the application method were changed to stirring only (400 r/min), and the same as in comparative example 7 was followed. CdIn 2 S 4 Catalyst production H 2 The rate was 4.27. Mu. Mol/(g.h).
Comparative example 9
Compared with comparative example 7, the difference is that: the conditions in the application method were changed to illumination only (55 w xenon lamp simulated sunlight), otherwise the same as in comparative example 7.CdIn 2 S 4 Catalytic reactionAgent production H 2 The rate was 8.29. Mu. Mol/(g.h).
Comparative example 10
Application method same as in example 1, reS alone 2 Catalyst production H 2 The rate was 8.1. Mu. Mol/(g.h).
Comparative example 11
The difference from comparative example 10 is that: the conditions in the application method were changed to stirring (400 r/min), and the same as in comparative example 10 was followed. ReS (ReS) 2 Catalyst production H 2 The rate was 3.03. Mu. Mol/(g.h).
Comparative example 12
The difference from comparative example 10 is that: the conditions in the application method were changed to light (55 w xenon lamp simulated sunlight), otherwise identical to comparative example 10.ReS (ReS) 2 Catalyst production H 2 The rate was 4.57. Mu. Mol/(g.h).
Claims (3)
1. Type II heterojunction ReS 2 /CdIn 2 S 4 A process for producing a composite catalyst, characterized by reacting ReS 2 And CdIn 2 S 4 Dissolving in water, performing ultrasonic treatment, stirring, filtering, washing, and drying to obtain ReS 2 /CdIn 2 S 4 A composite catalyst; reS (ReS) 2 The mass is CdIn 2 S 4 5 to 20 percent of the mass.
2. The type ii heterojunction rees of claim 1 2 /CdIn 2 S 4 A process for producing a composite catalyst characterized by comprising 2 The mass is CdIn 2 S 4 12% of mass; the ultrasonic power is 240w, the ultrasonic speed is 400r/min, and the stirring is carried out for 4h.
3. ReS according to claim 1 or 2 2 /CdIn 2 S 4 Catalytic production of H by composite catalyst 2 The application of (1) is characterized in that the ReS is weighed 2 /CdIn 2 S 4 Adding composite catalyst into water, dispersing uniformly, adding lactic acid, and introducing N 2 The mixture is closely packed under the illumination condition while stirring or ultrasonic treatmentSealing and catalyzing to produce H 2 。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310384809.8A CN116493025A (en) | 2023-04-12 | 2023-04-12 | Type II heterojunction ReS 2 /CdIn 2 S 4 Preparation method of composite catalyst and application of composite catalyst in photocatalytic hydrogen production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310384809.8A CN116493025A (en) | 2023-04-12 | 2023-04-12 | Type II heterojunction ReS 2 /CdIn 2 S 4 Preparation method of composite catalyst and application of composite catalyst in photocatalytic hydrogen production |
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| Publication Number | Publication Date |
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| CN116493025A true CN116493025A (en) | 2023-07-28 |
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Citations (4)
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| US20040000266A1 (en) * | 2002-06-27 | 2004-01-01 | D'evelyn Mark Philip | Method for reducing defect concentrations in crystals |
| CN104741141A (en) * | 2015-03-23 | 2015-07-01 | 湖南理工学院 | Preparation method of N-doped graphene-CdIn2S4 nanocomposite material |
| WO2022017464A1 (en) * | 2020-07-23 | 2022-01-27 | 纳晶科技股份有限公司 | Nanocrystalline preparation method, nanocrystalline, and optical film and light emitting device containing same |
| CN115400768A (en) * | 2022-09-07 | 2022-11-29 | 常州大学 | Heterojunction CdIn 2 S 4 /Bi 2 WO 6 Application of piezoelectric-optical composite catalyst in piezoelectric photodegradation of organic matters |
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Patent Citations (4)
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| US20040000266A1 (en) * | 2002-06-27 | 2004-01-01 | D'evelyn Mark Philip | Method for reducing defect concentrations in crystals |
| CN104741141A (en) * | 2015-03-23 | 2015-07-01 | 湖南理工学院 | Preparation method of N-doped graphene-CdIn2S4 nanocomposite material |
| WO2022017464A1 (en) * | 2020-07-23 | 2022-01-27 | 纳晶科技股份有限公司 | Nanocrystalline preparation method, nanocrystalline, and optical film and light emitting device containing same |
| CN115400768A (en) * | 2022-09-07 | 2022-11-29 | 常州大学 | Heterojunction CdIn 2 S 4 /Bi 2 WO 6 Application of piezoelectric-optical composite catalyst in piezoelectric photodegradation of organic matters |
Non-Patent Citations (3)
| Title |
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| ZHANG, YY等: "ReS2@Au NPs as signal labels quenching steady photocurrent generated by NiCo2O4/CdIn2S4/In2S3 heterojunction for sensitive detection of CYFRA 21-1", 《BIOSENSORS & BIOELECTRONICS》, 15 February 2023 (2023-02-15), pages 114992 * |
| 李小东: "二维超薄氧族化合物在光催化CO2转化中的应用及反应机理的研究", 《中国博士学位论文全文数据库》, 15 August 2019 (2019-08-15), pages 014 - 205 * |
| 马鑫等: "负载型CoS2/Bi2WO6的制备及其光催化性能研究", 《化学反应工程与工艺》, 25 August 2020 (2020-08-25), pages 297 - 306 * |
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