CN109331842A - A kind of CdS/WS2The preparation method of composite visible light catalyst - Google Patents
A kind of CdS/WS2The preparation method of composite visible light catalyst Download PDFInfo
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- CN109331842A CN109331842A CN201811277345.6A CN201811277345A CN109331842A CN 109331842 A CN109331842 A CN 109331842A CN 201811277345 A CN201811277345 A CN 201811277345A CN 109331842 A CN109331842 A CN 109331842A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000006185 dispersion Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 10
- 150000001661 cadmium Chemical class 0.000 claims abstract description 9
- 229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 238000005119 centrifugation Methods 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 description 2
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 abstract description 9
- 238000007146 photocatalysis Methods 0.000 abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 15
- 239000001257 hydrogen Substances 0.000 description 15
- 229910052739 hydrogen Inorganic materials 0.000 description 15
- 239000008367 deionised water Substances 0.000 description 13
- 229910021641 deionized water Inorganic materials 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000013019 agitation Methods 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 239000012456 homogeneous solution Substances 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 239000003426 co-catalyst Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229960004756 ethanol Drugs 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229940126678 chinese medicines Drugs 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003786 synthesis reaction 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
- B01J27/047—Sulfides with chromium, molybdenum, tungsten or polonium
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
- C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1088—Non-supported catalysts
-
- 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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of CdS/WS2The preparation method of composite visible light catalyst.This method comprises: cadmium salt soln and sodium sulfide solution are mixed, WS is added2, obtain dispersion liquid, hydro-thermal reaction, centrifuge washing, drying.The CdS/WS2Composite visible light catalyst has very high photocatalysis characteristic and stability.
Description
Technical field
The invention belongs to the preparation field of photochemical catalyst, in particular to a kind of CdS/WS2The system of composite visible light catalyst
Preparation Method.
Background technique
In today that energy shortage and problem of environmental pollution aggravate, develop and utilize clean energy resource be we pursues always with
The target of exploration, especially Hydrogen Energy, product after hydrogen is pollution-free and its burning is water, therefore solar photolysis water hydrogen technology
With great research significance and potential using value.Development of Novel catalyst and co-catalyst improve the benefit of photoproduction load
The emphasis of photocatalysis field research always is with rate and the stability etc. for enhancing catalysis material.
CdS is since its forbidden bandwidth is narrow, spectral response range is wide, it is simple to prepare and the series of advantages such as cheap form
For one of the semiconductor light-catalyst to enjoy great popularity.But the photoetch inside CdS leads to its hydrogen manufacturing under visible light illumination
Activity is very low, and stability is also very poor, this is very restricted it in practical applications.In CdS area load co-catalyst,
It is able to suppress the compound of photoproduction load, increases reactivity site, improves photocatalytic hydrogen production activity.
WS2Band gap magnitude be about 1.35eV and the optimum utilization value of solar radiation energy is close, be commonly used for co-catalysis
Agent, and compared to precious metal catalytic agent, at low cost and stability is good, so WS2It is commonly used to come with other semiconductors couplings
Improve photocatalysis characteristic.Zhang etc. has synthesized CdS/WS2Composite photo-catalyst (K.Zhang, et.al, ACS
Appl.Mater.Inter.2018,10,20458-20466), but they first pass through hydro-thermal method synthesis CdS presoma, then lead to
It crosses a series of processing such as freeze-drying and obtains sheet CdS.Again by CdS and WS2Mixing centrifugation freeze-drying obtains CdS/WS2It is compound visible
Photochemical catalyst, process is relatively cumbersome, and higher cost.Lactic acid sacrifice agent volume fraction is more a height of in this document hydrogen manufacturing experiment
20%, and take the CdS/WS of 3mg2Composite visible light catalyst carries out hydrogen manufacturing test, can from the supplementary document of this document
Out, the relative mass of photochemical catalyst used in hydrogen manufacturing test is higher, and obtained hydrogen production efficiency is lower.Zhong etc. utilizes microwave
Method has synthesized CdS/WS2(Y.Y.Zhong, et.al, Appl.Catal.B-Environ.2016,199:266-472), but should
The cost is relatively high for method.There is presently no a kind of CdS/WS2The preparation method of composite visible light catalyst can accomplish both simple
Single, raw material are again cheap to be easy to get.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of CdS/WS2The preparation method of composite visible light catalyst,
To overcome the photoetch of CdS itself and instability problem and CdS/WS in the prior art2The system of composite visible light catalyst
Standby cumbersome problem.
A kind of CdS/WS of the invention2The preparation method of composite visible light catalyst, comprising:
(1) cadmium salt soln and sodium sulfide solution are mixed, WS is added in stirring2, it being again stirring for, ultrasound obtains dispersion liquid,
Wherein cadmium salt, vulcanized sodium and WS2Molar ratio be 1:0.5~2:0.03~4；
(2) dispersion liquid in step (1) is subjected to hydro-thermal reaction, centrifuge washing is dry, obtains CdS/WS2Composite visible light
Catalyst.
Cadmium salt is Cd (CH in the step (1)3COO)2·2H2O。
The concentration of cadmium salt soln is 0.1~1.0mol/L in the step (1).
The concentration of sodium sulfide solution is 0.1~1.0mol/L in the step (1).
It is 20~40min that the time is again stirring in the step (1).
Ultrasonic time is 10~30min in the step (1).
Hydrothermal temperature is 160~200 DEG C in the step (2), and the hydro-thermal reaction time is 10~20h.
Centrifugal rotational speed is 6000~10000r/min in the step (2), and centrifugation time is 8~12min.
Washing in the step (2) are as follows: respectively washed 3~5 times with dehydrated alcohol and deionized water.
Drying is 6~10h of vacuum drying at 50~90 DEG C in the step (2).
CdS/WS in the step (2)2WS in composite visible light catalyst2Mass fraction be 5~80wt%.
Beneficial effect
(1) the method for the present invention is simple, and raw material is cheap to be easy to get, used WS2The noble metals such as co-catalyst and platinum, palladium, which help, urges
Agent is compared, cheap and excellent effect.
(2) CdS/WS prepared by the present invention2Composite visible light catalyst is the catalyst for having response to visible light, energy
Enough improve the utilization rate of solar energy；The catalyst light abstraction width is wide, and light induced electron and hole separative efficiency are high.
(3) CdS/WS prepared by the present invention2Composite visible light catalyst has very high photocatalysis characteristic and stability.
Detailed description of the invention
Fig. 1 is CdS, commercialization WS prepared by comparative example 12And the CdS/WS that embodiment 1 is prepared2Composite visible light is urged
The hydrogen production efficiency figure of agent；
Fig. 2 is the CdS/WS that embodiment 1 is prepared2The X-ray diffractogram of composite visible light catalyst；
Fig. 3 is CdS, commercialization WS prepared by comparative example 12And the CdS/WS that embodiment 1 is prepared2Composite visible light is urged
The absorbance figure of agent；
Fig. 4 is the CdS/WS that embodiment 1 is prepared2Transmission electron microscope figure (the figure a mark of composite visible light catalyst
Ruler is 50nm, and figure b scale is 5nm).
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Cd (the CH used in experiment3COO)2·2H2O、Na2S·9H2O and WS2Reagent source is in Chinese medicines group chemical reagent
Co., Ltd.All reagents are directly used without reprocessing.
Embodiment 1
(1) by the Cd (CH of 3.9978g3COO)2·2H2O is added in 30ml deionized water, forms the uniform molten of 0.5mol/L
Liquid, by the Na of 3.6027g2S·9H2O is added in the deionized water of 30ml, the homogeneous solution of 0.5mol/L is formed, by two kinds of solution
It is mixed evenly to obtain dispersion liquid A；By the WS of 1.4446g2It is added in dispersion liquid A, it is ultrasonic again after magnetic agitation 30min
20min forms dispersion liquid B.
(2) by dispersion liquid B at 180 DEG C hydro-thermal reaction 15h；Reaction product is centrifuged 10min in 8000r/min, uses second
Pure and mild deionized water respectively wash three times, by gained sample 70 DEG C of vacuum drying 8h to get arrive WS2Content is the CdS/ of 40wt%
WS2Composite visible light catalyst.
Fig. 2 shows: the diffraction maximum and CdS standard card (JCPDS NO.41-1049) and WS of the present embodiment sample2Standard
Card (JCPDS NO.08-0237) corresponds, and illustrates to successfully synthesize CdS/WS2Composite visible light catalyst.
Fig. 4 shows: by figure a as it can be seen that CdS nano particle is dispersed in WS2Around, by figure b it is found that CdS/WS2It is compound visible
The crystallinity of photochemical catalyst is good.
Embodiment 2
(1) by the Cd (CH of 0.7996g3COO)2·2H2O is added in 30ml deionized water, forms the uniform molten of 0.1mol/L
Liquid, by the Na of 1.0808g2S·9H2O is added in the deionized water of 30ml, the homogeneous solution of 0.1mol/L is formed, by two kinds of solution
It is mixed evenly to obtain dispersion liquid A；By the WS of 0.0228g2It is added in dispersion liquid A, it is ultrasonic again after magnetic agitation 40min
10min forms dispersion liquid B.
(2) by dispersion liquid B at 160 DEG C hydro-thermal reaction 20h；Reaction product is centrifuged under the conditions of 10000r/min
8min, with ethyl alcohol and deionized water respectively wash three times, by gained sample 90 DEG C of vacuum drying 6h to get arrive WS2Content is
The CdS/WS of 5wt%2Composite visible light catalyst.
Embodiment 3
(1) by the Cd (CH of 7.9956g3COO)2·2H2O is added in 30ml deionized water, forms the uniform molten of 1.0mol/L
Liquid, by the Na of 7.2054g2S·9H2O is added in the deionized water of 30ml, the homogeneous solution of 1.0mol/L is formed, by two kinds of solution
It is mixed evenly to obtain dispersion liquid A；By the WS of 17.3472g2It is added in dispersion liquid A, it is ultrasonic again after magnetic agitation 20min
30min forms dispersion liquid B.
(2) by dispersion liquid B at 200 DEG C hydro-thermal reaction 10h；Reaction product is centrifuged under the conditions of 6000r/min
12min, with ethyl alcohol and deionized water respectively wash three times, by gained sample 50 DEG C of vacuum drying 10h to get arrive WS2Content is
The CdS/WS of 80wt%2Composite visible light catalyst.
Embodiment 4
This experimental example is using photocatalytic hydrogen production by water decomposition as target, visible light that investigation and comparison example 1, embodiment 1 are prepared
Photochemical catalyst and WS2Photocatalysis performance.
Photocatalytic hydrogen production by water decomposition experimental procedure is as follows: taking photochemical catalyst 0.1g, is added to 90ml water and 10ml lactic acid is mixed
In bonding solvent, uniformly, light source is simulated solar irradiation AM1.5 to ultrasonic agitation, the sampling one in each hour under this light source Continuous irradiation
Yield secondary and with gas chromatographic detection hydrogen is 89 μm of ol h as a result as shown in Figure 1, CdS photocatalysis efficiency itself is very low- 1g-1, and hydrogen output is substantially reduced after three hours, stability is bad, and WS2Almost without photocatalysis performance.Embodiment 1 is prepared into
The CdS/WS arrived2The hydrogen production efficiency of composite visible light catalyst is up to 1125 μm of ol h-1g-1, and have good stability.
Comparative example 1
(1) by the Cd (CH of 3.9978g3COO)2·2H2O is added in 30ml deionized water, forms the uniform molten of 0.5mol/L
Liquid, by the Na of 3.6027g2S·9H2O is added in the deionized water of 30ml, the homogeneous solution of 0.5mol/L is formed, by two kinds of solution
It is mixed evenly to obtain dispersion liquid.
(2) by 180 DEG C of hydro-thermal reaction 15h of dispersion liquid；Reaction product is centrifuged 10min under the conditions of 8000r/min, uses second
Pure and mild deionized water respectively wash three times, by gained sample 70 DEG C of vacuum drying 8h to get arrive pure CdS photochemical catalyst.
Fig. 3 shows: WS2The absorbing wavelength range of/CdS composite visible light catalyst obviously expands.
Claims (10)
1. a kind of CdS/WS2The preparation method of composite visible light catalyst, comprising:
(1) cadmium salt soln and sodium sulfide solution are mixed, WS is added in stirring2, it is again stirring for, ultrasound obtains dispersion liquid, wherein cadmium
Salt, vulcanized sodium and WS2Molar ratio be 1:0.5~2:0.03~4；
(2) dispersion liquid in step (1) is subjected to hydro-thermal reaction, centrifuge washing is dry, obtains CdS/WS2Composite visible light catalysis
Agent.
2. the method according to claim 1, wherein cadmium salt is Cd (CH in the step (1)3COO)2·2H2O。
3. the method according to claim 1, wherein in the step (1) cadmium salt soln concentration be 0.1~
1.0mol/L。
4. the method according to claim 1, wherein in the step (1) sodium sulfide solution concentration be 0.1~
1.0mol/L。
5. the method according to claim 1, wherein be again stirring in the step (1) time be 20~
40min。
6. the method according to claim 1, wherein ultrasonic time is 10~30min in the step (1).
7. the method according to claim 1, wherein hydrothermal temperature is 160~200 in the step (2)
DEG C, the hydro-thermal reaction time is 10~20h.
8. the method according to claim 1, wherein centrifugal rotational speed is 6000~10000r/ in the step (2)
Min, centrifugation time are 8~12min.
9. the method according to claim 1, wherein the step (2) in washing are as follows: with dehydrated alcohol and go from
Sub- water respectively washs 3~5 times；Drying is 6~10h of vacuum drying at 50~90 DEG C.
10. the method according to claim 1, wherein CdS/WS in the step (2)2Composite visible light catalyst
Middle WS2Mass fraction be 5~80wt%.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768832A (en) * | 2022-05-24 | 2022-07-22 | 哈尔滨工业大学 | Preparation method of tungsten disulfide nanosheet modified cadmium sulfide photocatalyst |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768832A (en) * | 2022-05-24 | 2022-07-22 | 哈尔滨工业大学 | Preparation method of tungsten disulfide nanosheet modified cadmium sulfide photocatalyst |
| CN114768832B (en) * | 2022-05-24 | 2024-02-20 | 哈尔滨工业大学 | Preparation method of tungsten disulfide nanosheet modified cadmium sulfide photocatalyst |
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