CN106799200A - A kind of WS2@MoS2Composite visible light catalyst and its preparation method and application - Google Patents
A kind of WS2@MoS2Composite visible light catalyst and its preparation method and application Download PDFInfo
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- CN106799200A CN106799200A CN201710105549.0A CN201710105549A CN106799200A CN 106799200 A CN106799200 A CN 106799200A CN 201710105549 A CN201710105549 A CN 201710105549A CN 106799200 A CN106799200 A CN 106799200A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052961 molybdenite Inorganic materials 0.000 claims abstract description 32
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 239000011259 mixed solution Substances 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 14
- 238000005119 centrifugation Methods 0.000 claims abstract description 13
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 238000006731 degradation reaction Methods 0.000 claims abstract description 9
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000013049 sediment Substances 0.000 claims abstract description 8
- 238000002604 ultrasonography Methods 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 239000000975 dye Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 5
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims description 5
- 238000007146 photocatalysis Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 238000003760 magnetic stirring Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000006228 supernatant Substances 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0274—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04 characterised by the type of anion
- B01J20/0285—Sulfides of compounds other than those provided for in B01J20/045
-
- 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
- B01J27/051—Molybdenum
-
- B01J35/39—
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a kind of WS2@MoS2Composite visible light catalyst and its preparation method and application, belongs to composite visible light catalyst and dye wastewater degradation technical field.Technical scheme main points are：By WS2Powder is dissolved in the mixed solution of ethanol and water, makes WS2Concentration be 8mg/mL, ultrasonic 8h, then the WS of individual layer or few layer is obtained after centrifugation 30min removes unstripped sediment2Nanometer sheet suspension；0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 60mL WS2In the mixed solution of nanometer sheet suspension and deionized water, ultrasound 30min after stirring 1h is transferred in hydrothermal reaction kettle and 10h is kept in 200 DEG C, and natural cooling is centrifuged, and WS is dried to obtain after being cleaned with water and ethanol successively2@MoS2Composite visible light catalyst.The present invention is according to MoS2Have the advantages that specific surface area is big and high adsorption capacity, by MoS2With WS2It is combined together and gives full play to the advantage of the two, so as to effectively prevent the compound of light induced electron and hole, widen light abstraction width, while strengthens adsorption capacity of the catalyst to pollutant.
Description
Technical field
The invention belongs to composite visible light catalyst and dye wastewater degradation technical field, and in particular to a kind of WS2@MoS2
Composite visible light catalyst and its preparation method and application.
Background technology
With the development of DYE PRODUCTION and printing and dyeing industry, the discharge capacity of waste water from dyestuff also drastically increases, and waste water from dyestuff
With colourity is big, organic pollution content high, complicated components, change of water quality and bio-toxicity is big, bio-refractory and towards anti-
The features such as photodissociation and oxidation resistant direction are developed, and existing conventional process waster water process effect is unsatisfactory, makes treatment dyestuff
The difficulty of waste water is further increased.Catalytic treatment technology is to be improved in traditional water treatment technology or new urged using certain
The treatment technology of agent, its significant treatment effeciency has obtained the extensive concern of people, particularly conductor photocatalysis treatment skill
Art.Due to showing good application prospect in terms of the removal of difficult for biological degradation pollutant, for most organic contaminations
Thing can simultaneously be processed and reacted and need to only be carried out under normal temperature and pressure conditionses, and these features advantageously reduce being processed into for sewage
This, it has also become study hotspot both domestic and external.Tungsten disulfide is a kind of emerging transient metal sulfide, is received in different fields
Great concern is arrived, its optical property can change because peeling off the difference of the number of plies, and the reduction of the number of plies can make block WS2's
Indirect band gap transitions are individual layer WS2Direct band gap, the WS of individual layer2Have very with Photoluminescence and to visible region
Strong absorbability, but still there are some defects in it, and such as adsorption ability etc. significantly limit WS2Photocatalysis
The application of agent.Thus, to its actual application ability, further research is very necessary.
The content of the invention
Present invention solves the technical problem that there is provided WS a kind of simple to operate and environment-friendly2@MoS2Composite visible light
Catalyst and preparation method thereof, WS obtained in the method2@MoS2There is composite visible light catalyst preferable photocatalytic degradation to contaminate
Expect the ability of waste water.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of WS2@MoS2Composite visible light catalyst
Preparation method, it is characterised in that concretely comprise the following steps：
（1）By WS2Powder is dissolved in the mixed solution of ethanol and water, makes WS2Concentration be 8mg/mL, ultrasonic 8h, then by from
Heart 30min obtains individual layer or the less WS of layer after removing unstripped sediment2Nanometer sheet suspension；
（2）0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 60mL WS2In the mixed solution of nanometer sheet suspension and deionized water,
Ultrasound 30min after stirring 1h, is transferred in hydrothermal reaction kettle and 10h is kept in 200 DEG C, and natural cooling is centrifuged, successively with water and second
WS is dried to obtain after alcohol cleaning2@MoS2Composite visible light catalyst.
Further preferably, step（1）Middle ethanol is 7 with the volume ratio of water with ethanol in the mixed solution of water:3.
Further preferably, step（2）Middle WS2Nanometer sheet suspension and WS in the mixed solution of deionized water2Nanometer sheet suspends
Liquid is 7 with the volume ratio of deionized water:3.
WS of the present invention2@MoS2Composite visible light catalyst, it is characterised in that prepared by the above method.
WS of the present invention2@MoS2Composite visible light catalyst photocatalytic degradation of dye under natural sunlight gives up
Application in water.
Further preferably, described waste water from dyestuff is the rhdamine B waste water of 10mg/L, the degraded of photocatalytic degradation 3h
Rate is 88.7%.
The present invention has the advantages that compared with prior art：The present invention is according to MoS2It is big with specific surface area and inhale
The strong advantage of attached ability, by MoS2With WS2It is combined together and gives full play to the advantage of the two, and new characteristic can be developed,
So as to effectively prevent the compound of light induced electron and hole, light abstraction width is widened, while strengthening suction of the catalyst to pollutant
Attached ability.
Brief description of the drawings
Fig. 1 is MoS2With WS obtained in embodiment 42@MoS2The XRD spectrum of composite visible light catalyst.
Specific embodiment
The above of the invention is described in further details by the following examples, but this should not be interpreted as this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.
Embodiment 1
（1）Weigh appropriate WS2It is 7 that powder is dissolved in volume ratio:In 3 ethanol and the mixed solution of water, make WS2Concentration reach
8mg/mL, ultrasonic 8h, obtain the WS of individual layer or few layer after centrifugation 30min removes unstripped sediment2Nanometer sheet is hanged
Supernatant liquid；
（2）Weigh 0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 18mL WS2Nanometer sheet suspension is molten with the mixing of 42mL deionized waters
In liquid, ultrasound 30min after 1h is stirred on the magnetic stirring apparatus, is transferred in hydrothermal reaction kettle and 10h are kept in 200 DEG C, it is last oneself
So cooling, centrifugation is respectively washed three times with water and ethanol, is dried to obtain WS2@MoS2Composite visible light catalyst.
WS obtained in the present embodiment2@MoS2Composite visible light catalyst is degraded sieve of 10mg/L under natural sunlight
Red bright B waste water from dyestuff, the degradation rate of 3h is 64.8%.
Embodiment 2
（1）Weigh appropriate WS2It is 7 that powder is dissolved in volume ratio:In 3 ethanol and the mixed solution of water, make WS2Concentration reach
8mg/mL, ultrasonic 8h, obtain the WS of individual layer or few layer after centrifugation 30min removes unstripped sediment2Nanometer sheet is hanged
Supernatant liquid；
（2）Weigh 0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 20mL WS2Nanometer sheet suspension is molten with the mixing of 40mL deionized waters
In liquid, ultrasound 30min after 1h is stirred on the magnetic stirring apparatus, is transferred in hydrothermal reaction kettle and 10h are kept in 200 DEG C, it is last oneself
So cooling, centrifugation is respectively washed three times with water and ethanol, is dried to obtain WS2@MoS2Composite visible light catalyst.
WS obtained in the present embodiment2@MoS2Composite visible light catalyst is degraded sieve of 10mg/L under natural sunlight
Red bright B waste water from dyestuff, the degradation rate of 3h is 49.8%.
Embodiment 3
（1）Weigh appropriate WS2It is 7 that powder is dissolved in volume ratio:In 3 ethanol and the mixed solution of water, make WS2Concentration reach
8mg/mL, ultrasonic 8h, obtain the WS of individual layer or few layer after centrifugation 30min removes unstripped sediment2Nanometer sheet is hanged
Supernatant liquid；
（2）Weigh 0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 30mL WS2Nanometer sheet suspension is molten with the mixing of 30mL deionized waters
In liquid, ultrasound 30min after 1h is stirred on the magnetic stirring apparatus, is transferred in hydrothermal reaction kettle and 10h are kept in 200 DEG C, it is last oneself
So cooling, centrifugation is respectively washed three times with water and ethanol, is dried to obtain WS2@MoS2Composite visible light catalyst.
WS obtained in the present embodiment2@MoS2Composite visible light catalyst is degraded sieve of 10mg/L under natural sunlight
Red bright B waste water from dyestuff, the degradation rate of 3h is 77.6%.
Embodiment 4
（1）Weigh appropriate WS2It is 7 that powder is dissolved in volume ratio:In 3 ethanol and the mixed solution of water, make WS2Concentration reach
8mg/mL, ultrasonic 8h, obtain the WS of individual layer or few layer after centrifugation 30min removes unstripped sediment2Nanometer sheet is hanged
Supernatant liquid；
（2）Weigh 0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 42mL WS2Nanometer sheet suspension is molten with the mixing of 18mL deionized waters
In liquid, ultrasound 30min after 1h is stirred on the magnetic stirring apparatus, is transferred in hydrothermal reaction kettle and 10h are kept in 200 DEG C, it is last oneself
So cooling, centrifugation is respectively washed three times with water and ethanol, is dried to obtain WS2@MoS2Composite visible light catalyst.
WS obtained in the present embodiment2@MoS2Composite visible light catalyst is degraded sieve of 10mg/L under natural sunlight
Red bright B waste water from dyestuff, the degradation rate of 3h is 88.7%.
Embodiment 5
（1）Weigh appropriate WS2It is 7 that powder is dissolved in volume ratio:In 3 ethanol and the mixed solution of water, make WS2Concentration reach
8mg/mL, ultrasonic 8h, obtain the WS of individual layer or few layer after centrifugation 30min removes unstripped sediment2Nanometer sheet is hanged
Supernatant liquid；
（2）Weigh 0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 45mL WS2Nanometer sheet suspension is molten with the mixing of 15mL deionized waters
In liquid, ultrasound 30min after 1h is stirred on the magnetic stirring apparatus, is transferred in hydrothermal reaction kettle and 10h are kept in 200 DEG C, it is last oneself
So cooling, centrifugation is respectively washed three times with water and ethanol, is dried to obtain WS2@MoS2Composite visible light catalyst.
WS obtained in the present embodiment2@MoS2Composite visible light catalyst is degraded sieve of 10mg/L under natural sunlight
Red bright B waste water from dyestuff, the degradation rate of 3h is 62.3%.
Embodiment above describes general principle of the invention, principal character and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, simply original of the invention is illustrated described in above-described embodiment and specification
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, and these changes and improvements each fall within
In the scope of protection of the invention.
Claims (6)
1. a kind of WS2@MoS2The preparation method of composite visible light catalyst, it is characterised in that concretely comprise the following steps：
（1）By WS2Powder is dissolved in the mixed solution of ethanol and water, makes WS2Concentration be 8mg/mL, ultrasonic 8h, then by centrifugation
30min obtains individual layer or the less WS of layer after removing unstripped sediment2Nanometer sheet suspension；
（2）0.6g ammonium molybdates and 4.8g thiocarbamides are dissolved in 60mL WS2In the mixed solution of nanometer sheet suspension and deionized water, stir
Ultrasound 30min after 1h is mixed, is transferred in hydrothermal reaction kettle and 10h, natural cooling, centrifugation, successively with water and ethanol is kept in 200 DEG C
WS is dried to obtain after cleaning2@MoS2Composite visible light catalyst.
2. WS according to claim 12@MoS2The preparation method of composite visible light catalyst, it is characterised in that：Step（1）
Middle ethanol is 7 with the volume ratio of water with ethanol in the mixed solution of water:3.
3. WS according to claim 12@MoS2The preparation method of composite visible light catalyst, it is characterised in that：Step（2）
Middle WS2Nanometer sheet suspension and WS in the mixed solution of deionized water2Nanometer sheet suspension is 7 with the volume ratio of deionized water:3.
4. a kind of WS2@MoS2Composite visible light catalyst, it is characterised in that be the side as described in any one in claim 1-3
What method was prepared.
5. the WS described in claim 42@MoS2Composite visible light catalyst photocatalytic degradation of dye under natural sunlight
Application in waste water.
6. WS according to claim 52@MoS2Composite visible light catalyst photocatalytic degradation under natural sunlight
Application in waste water from dyestuff, it is characterised in that：Described waste water from dyestuff is the rhdamine B waste water of 10mg/L, photocatalysis drop
The degradation rate for solving 3h is 88.7%.
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| CN201710105549.0A CN106799200A (en) | 2017-02-26 | 2017-02-26 | A kind of WS2@MoS2Composite visible light catalyst and its preparation method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786872A (en) * | 2018-07-05 | 2018-11-13 | 河南师范大学 | A kind of flower-shaped WS2/Bi2O2CO3The synthetic method of heterojunction photocatalysis material and its application |
| CN109174128A (en) * | 2018-09-13 | 2019-01-11 | 浙江大学 | A kind of method of modifying of tungsten disulfide and its application |
| CN110496627A (en) * | 2018-12-07 | 2019-11-26 | 郑州航空工业管理学院 | A kind of WS of high activity2/MoS2-RGO composite photo-catalyst and its preparation method and application |
| CN111760579A (en) * | 2020-07-12 | 2020-10-13 | 昆明理工大学 | Preparation method and application of tungsten-molybdenum bisulfide composite photocatalyst |
| CN113072162A (en) * | 2021-03-25 | 2021-07-06 | 武汉理工大学 | Method for degrading organic dye wastewater based on tungsten powder and ultrasonic catalysis |
| CN113860358A (en) * | 2021-10-27 | 2021-12-31 | 福州大学 | Method for preparing multi-metal sulfide nanosheets from tanning sulfur-containing wastewater |
| CN114772644A (en) * | 2022-03-28 | 2022-07-22 | 西南科技大学 | Preparation and application of surface oxidized tungsten disulfide nanosheet for treating radioactive wastewater |
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| CN102694171A (en) * | 2012-06-08 | 2012-09-26 | 浙江大学 | Hydrothermal preparation method for composite material of single-layer WS2 and graphene |
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| CN102694171A (en) * | 2012-06-08 | 2012-09-26 | 浙江大学 | Hydrothermal preparation method for composite material of single-layer WS2 and graphene |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108786872A (en) * | 2018-07-05 | 2018-11-13 | 河南师范大学 | A kind of flower-shaped WS2/Bi2O2CO3The synthetic method of heterojunction photocatalysis material and its application |
| CN109174128A (en) * | 2018-09-13 | 2019-01-11 | 浙江大学 | A kind of method of modifying of tungsten disulfide and its application |
| CN110496627A (en) * | 2018-12-07 | 2019-11-26 | 郑州航空工业管理学院 | A kind of WS of high activity2/MoS2-RGO composite photo-catalyst and its preparation method and application |
| CN111760579A (en) * | 2020-07-12 | 2020-10-13 | 昆明理工大学 | Preparation method and application of tungsten-molybdenum bisulfide composite photocatalyst |
| CN111760579B (en) * | 2020-07-12 | 2023-02-21 | 昆明理工大学 | Preparation method and application of tungsten-molybdenum disulfide composite photocatalyst |
| CN113072162A (en) * | 2021-03-25 | 2021-07-06 | 武汉理工大学 | Method for degrading organic dye wastewater based on tungsten powder and ultrasonic catalysis |
| CN113860358A (en) * | 2021-10-27 | 2021-12-31 | 福州大学 | Method for preparing multi-metal sulfide nanosheets from tanning sulfur-containing wastewater |
| CN114772644A (en) * | 2022-03-28 | 2022-07-22 | 西南科技大学 | Preparation and application of surface oxidized tungsten disulfide nanosheet for treating radioactive wastewater |
| CN114772644B (en) * | 2022-03-28 | 2023-05-16 | 西南科技大学 | Preparation and application of surface oxidized tungsten disulfide nano-sheet for treating radioactive wastewater |
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