CN105498774A - Method for preparing graphene oxide-cobalt nano-composite catalyst - Google Patents

Method for preparing graphene oxide-cobalt nano-composite catalyst Download PDF

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Publication number
CN105498774A
CN105498774A CN201510899150.5A CN201510899150A CN105498774A CN 105498774 A CN105498774 A CN 105498774A CN 201510899150 A CN201510899150 A CN 201510899150A CN 105498774 A CN105498774 A CN 105498774A
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graphene oxide
cobalt
composite nanometer
cobalt composite
nanometer catalyst
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CN201510899150.5A
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Inventor
皮运清
董淑英
曹治国
雷玉坤
赵鹏
邱德志
王松茵
鲁艺杰
孙剑辉
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Henan Normal University
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Henan Normal University
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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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/75—Cobalt
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
    • 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 method for preparing a graphene oxide-cobalt nano-composite catalyst, belonging to the technical field of synthesis of catalytic materials. The key points of the technical scheme of the method are as follows: 0.0313-0.0399 g of CoSO4*7H2O is dissolved into 40 mL of deionized water, then 0.1 g of graphene oxide is added, an ultrasonic dispersion treatment is performed for 1 h, 0.1 mL of hydrazine hydrate is added, the ultrasonic dispersion treatment is performed again for 5 min, a solution is transferred to a hydrothermal reaction kettle at a temperature of 180 DEG C for 10h after the completion of the ultrasonic dispersion treatment, the solution is cooled to room temperature and is filtered, and collected precipitate is dried at a temperature of 60 DEG C for 6 h so as to obtain the graphene oxide-cobalt nano-composite catalyst with a cobalt mass percentage of 5%-6%. The graphene oxide-cobalt nano-composite catalyst prepared according to the method disclosed by the invention has the advantages that the catalyst cannot be dissolved in neutral and alkaline environments, has good crystallization property, good catalytic performance and better visible-light responsiveness, can efficiently catalyze Oxone to degrade rhodamine B dye wastewater with a concentration of not smaller than 50 mg*L<-1> under the sunshine, and has the effects of stability, high efficiency, low price, freeness from toxicity and the like.

Description

A kind of preparation method of graphene oxide-cobalt composite nanometer catalyst
Technical field
The invention belongs to the synthesis technical field of catalysis material, be specifically related to a kind of can the preparation method of graphene oxide-cobalt composite nanometer catalyst of efficient catalytic Oxone rhodamine B degradation waste water from dyestuff.
Background technology
Rhodamine B take xanthene as the fluorescent dye of parent, is widely used in the aspects such as food dyeing, fluorescence labeling and dye coloring because it has nonselective tinting strength, tinting power and feature not easy to fade.But toxicologic study subsequently shows: rhodamine B has potential carcinogenic and mutagenicity, now forbidden using as food additives by China.Rhdamine B waste water is also one of typical difficult for biological degradation organic wastewater, adopts conventional biological treatment removal effect not ideal enough.
Oxone(2KHSO 5kHSO 4k 2sO 4) be the trade name of peroxosulphuric hydrogen potassium complex salt, its active material is single peroxosulphuric hydrogen potassium KHSO 5.Due to a SO 3 ?replace the unique texture that HOOH forms asymmetric peroxide, make it be easy to excite and produce a large amount of potentiometric titrations (SO 4 -).Oxone/Co 2+a kind of oxidation system being similar to Fenton reagent, transition metal Co 2+can catalysis Oxone produce in a large number active, oxidability is strong and the SO of non-selectivity 4 -organic pollution materials exhaustive oxidation in water body is CO by free radical 2, H 2o and inorganic salts.This technology is high because for the treatment of effeciency, especially in the removal of difficult for biological degradation pollutant, has excellent performance, makes it become the study hotspot of people's concern always.
Oxone/Co 2+in oxidation system, the water miscible cobaltous sulfate of normal employing is as catalyst, can impel SO 4 -a large amount of generations of free radical, thus ensure carrying out smoothly of oxidation reaction.Experimental studies have found that: Oxone/Co 2+oxidation system to process waste water time pH value no requirement (NR), the in most cases better processing effect of centering waste water.The cobalt salt of solubility can after the completion of reaction with water discharge, but " cobalt " belongs to heavy metal element, can enrichment in vivo, can be accumulated, therefore have potential damaging effect to ecological environment and human health by food chain in human body.
In order to avoid the pollution of soluble heavy metal cobalt, we once adopted ultraviolet light to carry out catalysis Oxone and produced SO 4 -free radical, this method catalytic effect is not ideal enough.In recent years, the ideal carrier of synthesis composite photo-catalyst is become because Graphene has unique electronic characteristic, greatly specific area and higher transparency; The graphene composite material of synthesis has many new characteristics in photocatalysis to degrade organic matter, as effective Charger transfer be separated, the light abstraction width expanded and to the good adsorption capacity of pollutant.But, at present not about the relevant record of graphene oxide-cobalt composite nanometer catalyst catalysis Oxone degrading organic dye waste water.
Summary of the invention
The technical problem that the present invention solves there is provided a kind of preparation method of graphene oxide-cobalt composite nanometer catalyst, the oxidation system that obtained graphene oxide-cobalt composite nanometer catalyst and Oxone form can not only effective rhodamine B degradation waste water from dyestuff, and graphene oxide-cobalt composite nanometer catalyst can recycling, avoids the secondary pollution of cobalt ions to environment.
The present invention adopts following technical scheme for solving the problems of the technologies described above, a kind of preparation method of graphene oxide-cobalt composite nanometer catalyst, it is characterized in that concrete steps are: (1) is that graphene oxide prepared by raw material with natural graphite powder, under condition of ice bath, 1g graphite powder is joined 23mL mass concentration is in the concentrated sulfuric acid of 98%, adds 3gKMnO after stirring 10min 4continue to stir 1h, gained bottle green mixture is transferred in 30 DEG C of water-baths and is continued to stir 1h, 46mL deionized water is dropwise added subsequently under 96 DEG C of water-baths, continue to stir 30min, finally add 10mL hydrogen peroxide and 140mL deionized water cessation reaction, the mixture of gained is at the pelleted by centrifugation 10min of 4000rpm, then with mass concentration be 5% hydrochloric acid and ethanol respectively wash three times, collect gained sediment and obtain graphene oxide in 60 DEG C of dry 12h; (2) by 0.0313-0.0399gCoSO 47H 2o is dissolved in 40mL deionized water, then 0.1g graphene oxide is added, 0.1mL hydrazine hydrate is added after ultrasonic disperse 1h, ultrasonic disperse 5min again, after ultrasonic end, solution is transferred in hydrothermal reaction kettle and keeps 10h in 180 DEG C, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 5%-6%.
The method of graphene oxide of the present invention-cobalt composite nanometer catalyst catalysis Oxone catalytic degradation rhdamine B waste water, it is characterized in that: the graphene oxide-cobalt composite nanometer catalyst of described graphene oxide-cobalt composite nanometer catalyst to be the cobalt mass percentage directly obtained according to said method be 5%-6%, detailed process is under normal temperature indoor or outdoor intense light conditions, to be that to join 50mL mass concentration be catalytic degradation rhodamine B in the rhdamine B waste water of 50mg/L for oxidation system that the Oxone solution of 0.01mol/L and 0.005g graphene oxide-cobalt composite nanometer catalyst form by 5mL molar concentration, after wherein graphene oxide-cobalt composite nanometer catalyst filtered and recycled, repetitive cycling uses.
Graphene oxide-cobalt composite nanometer catalyst that the present invention obtains does not dissolve under neutral and alkaline environment, crystallization and catalytic performance good, and there is good visible light-responded ability, can efficient catalytic Oxone degraded>=50mgL under sunshine -1rhdamine B waste water, has stable, cost effective and the advantage such as nontoxic, can be applied to the degraded of difficult for biological degradation organic pollution, have stronger market application foreground.
Accompanying drawing explanation
The super-resolution transmission electron microscope figure of Fig. 1 to be the mass percentage of the obtained cobalt of the embodiment of the present invention 5 be graphene oxide-cobalt composite nanometer catalyst of 5%, wherein thin layer is graphene oxide, and the stain on thin layer is the cobalt of load.
Fig. 2 to be the mass percentage of the obtained cobalt of the embodiment of the present invention 5 be 5% graphene oxide-cobalt composite nanometer catalyst on the super-resolution transmission electron microscope figure of Supported Co.
Detailed description of the invention
By the following examples foregoing of the present invention is described in further details, but this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment.All technology realized based on foregoing of the present invention all belong to scope of the present invention.
Embodiment 1
Be that graphene oxide prepared by raw material with natural graphite powder, under condition of ice bath, 1g graphite powder is joined 23mL mass concentration is in the concentrated sulfuric acid of 98%, adds 3gKMnO after stirring 10min 4continue to stir 1h, gained bottle green mixture is transferred in 30 DEG C of water-baths and is continued to stir 1h, 46mL deionized water is dropwise added subsequently under 96 DEG C of water-baths, continue to stir 30min, finally add 10mL hydrogen peroxide and 140mL deionized water cessation reaction, the mixture of gained is at the pelleted by centrifugation 10min of 4000rpm, then with mass concentration be 5% hydrochloric acid and ethanol respectively wash three times, collecting gained sediment, to obtain graphene oxide in 60 DEG C of dry 12h for subsequent use.
Embodiment 2
Under normal temperature indoor conditions, 5mL molar concentration is 0.01molL -1oxone solution be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 20min be 0.911%.
Embodiment 3
Under normal temperature indoor conditions, 5mL molar concentration is 0.01molL -1oxone solution and the system that forms of 0.005g graphene oxide be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 20min be 0.945%.
Embodiment 4
First by the CoSO of 0.0313g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 5%.Under normal temperature indoor conditions, 0.005g cobalt mass percentage is the graphene oxide-cobalt composite nanometer catalyst of 5% is 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 30min be 0.434%.
Embodiment 5
First by the CoSO of 0.0167g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 3%.By 5mL0.01molL under normal temperature indoor conditions -1oxone solution and 0.005g cobalt mass percentage be 3% the oxidation system that forms of graphene oxide-cobalt composite nanometer catalyst be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 20min be 89.11%.
Embodiment 6
First by the CoSO of 0.0313g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 5%.By 5mL0.01molL under normal temperature indoor conditions -1oxone solution and 0.005g cobalt mass percentage be 5% the oxidation system that forms of graphene oxide-cobalt composite nanometer catalyst be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 12min be 97.73%.
Embodiment 7
First by the CoSO of 0.0399g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 6%.By 5mL0.01molL under normal temperature indoor conditions -1oxone solution and 0.005g cobalt mass percentage be 6% the oxidation system that forms of functionalized graphene-cobalt composite nanometer catalyst be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 12min be 96.51%.
Embodiment 8
First by the CoSO of 0.0500g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 7%.By 5mL0.01molL under normal temperature indoor conditions -1oxone solution and 0.005g cobalt mass percentage be 7% the oxidation system that forms of functionalized graphene-cobalt composite nanometer catalyst be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 12min be 86.19%.
Embodiment 9
First by the CoSO of 0.0313g 47H 2o is dissolved in 40mL deionized water, then add the graphene oxide of 0.1g, ultrasonic disperse 1h, then add 0.1mL hydrazine hydrate, stir, ultrasonic disperse 5min again, after ultrasonic end, is transferred to solution in hydrothermal reaction kettle, 10h is kept in 180 DEG C after airtight, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 5%.By 5mL0.01molL under the strong sunlight conditions in outdoor in summer -1oxone solution and 0.005g cobalt mass percentage be 5% the oxidation system that forms of functionalized graphene-cobalt composite nanometer catalyst be 50mgL to 50mL mass concentration -1the degradation efficiency of rhdamine B waste water catalytic degradation 8min be 99.22%.
Embodiment above describes general principle of the present invention, principal character and advantage; the technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; under the scope not departing from the principle of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of the invention.

Claims (2)

1. the preparation method of graphene oxide-cobalt composite nanometer catalyst, it is characterized in that concrete steps are: (1) is that graphene oxide prepared by raw material with natural graphite powder, under condition of ice bath, 1g graphite powder is joined 23mL mass concentration is in the concentrated sulfuric acid of 98%, adds 3gKMnO after stirring 10min 4continue to stir 1h, gained bottle green mixture is transferred in 30 DEG C of water-baths and is continued to stir 1h, 46mL deionized water is dropwise added subsequently under 96 DEG C of water-baths, continue to stir 30min, finally add 10mL hydrogen peroxide and 140mL deionized water cessation reaction, the mixture of gained is at the pelleted by centrifugation 10min of 4000rpm, then with mass concentration be 5% hydrochloric acid and ethanol respectively wash three times, collect gained sediment and obtain graphene oxide in 60 DEG C of dry 12h; (2) by 0.0313-0.0399gCoSO 47H 2o is dissolved in 40mL deionized water, then 0.1g graphene oxide is added, 0.1mL hydrazine hydrate is added after ultrasonic disperse 1h, ultrasonic disperse 5min again, after ultrasonic end, solution is transferred in hydrothermal reaction kettle and keeps 10h in 180 DEG C, be cooled to room temperature, filter, the sediment of collection is obtained in 60 DEG C of dry 6h graphene oxide-cobalt composite nanometer catalyst that cobalt mass percentage is 5%-6%.
2. the method for graphene oxide according to claim 1-cobalt composite nanometer catalyst catalysis Oxone catalytic degradation rhdamine B waste water, it is characterized in that: the graphene oxide-cobalt composite nanometer catalyst of described graphene oxide-cobalt composite nanometer catalyst to be the cobalt mass percentage directly obtained according to method according to claim 1 be 5%-6%, detailed process is under normal temperature indoor or outdoor intense light conditions, to be that to join 50mL mass concentration be catalytic degradation rhodamine B in the rhdamine B waste water of 50mg/L for oxidation system that the Oxone solution of 0.01mol/L and 0.005g graphene oxide-cobalt composite nanometer catalyst form by 5mL molar concentration, after wherein graphene oxide-cobalt composite nanometer catalyst filtered and recycled, repetitive cycling uses.
CN201510899150.5A 2015-12-09 2015-12-09 Method for preparing graphene oxide-cobalt nano-composite catalyst Pending CN105498774A (en)

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CN106966459A (en) * 2017-05-02 2017-07-21 河南师范大学 The method that magnetic nano-catalyst CoFe PBAs@rGO are catalyzed Oxone degrading organic dye waste waters
CN107051562A (en) * 2016-12-28 2017-08-18 中南大学 A kind of preparation method of graphene-based carbonic acid Co catalysts for cyclohexene oxide
CN107243346A (en) * 2017-05-05 2017-10-13 上海电力学院 A kind of catalyst of the cobalt containing extra granular and its preparation method and application
CN107376917A (en) * 2017-08-02 2017-11-24 河南师范大学 The preparation method of insoluble magnetic graphene/cobalt composite catalyst and its application in Oxone degradation of dye waste water is catalyzed
CN107597120A (en) * 2017-09-22 2018-01-19 中石化炼化工程（集团）股份有限公司 Graphene-supported cobalt series catalyst and its production and use
CN107694570A (en) * 2017-09-30 2018-02-16 江南大学 A kind of preparation method of efficiently cobaltosic oxide graphene nano composite catalyst
CN108325528A (en) * 2017-01-19 2018-07-27 南京理工大学 A kind of cobalt/graphen catalyst
CN108786814A (en) * 2018-06-06 2018-11-13 武汉工程大学 A kind of copper cobalt dual-metal/porous carbon nanofiber composite material and preparation method and application
CN109250789A (en) * 2018-09-28 2019-01-22 江苏大学 A kind of preparation method and applications of the compound nethike embrane of graphene oxide/cobalt/cobalt oxide
CN109622068A (en) * 2019-01-04 2019-04-16 河南师范大学 A kind of preparation method and applications for the load cobalt graphene aerogel composite catalyst that can efficiently activate persulfate
CN110759555A (en) * 2019-11-11 2020-02-07 河南师范大学 Multifunctional water cup integrating purification of tap water and drinking
CN112691676A (en) * 2021-02-01 2021-04-23 河南师范大学 Zn-doped alpha-Fe2O3Preparation method of/graphene aerogel composite catalyst, oxidation system and application thereof
CN116328769A (en) * 2023-03-08 2023-06-27 南昌大学 RGO/Co (OH) with sheet-sheet structure 2 Co-coated nanocrystalline catalyst, preparation method and application thereof

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CN107051562A (en) * 2016-12-28 2017-08-18 中南大学 A kind of preparation method of graphene-based carbonic acid Co catalysts for cyclohexene oxide
CN108325528B (en) * 2017-01-19 2021-05-04 南京理工大学 Cobalt/graphene catalyst
CN108325528A (en) * 2017-01-19 2018-07-27 南京理工大学 A kind of cobalt/graphen catalyst
CN106966459A (en) * 2017-05-02 2017-07-21 河南师范大学 The method that magnetic nano-catalyst CoFe PBAs@rGO are catalyzed Oxone degrading organic dye waste waters
CN107243346A (en) * 2017-05-05 2017-10-13 上海电力学院 A kind of catalyst of the cobalt containing extra granular and its preparation method and application
CN107376917A (en) * 2017-08-02 2017-11-24 河南师范大学 The preparation method of insoluble magnetic graphene/cobalt composite catalyst and its application in Oxone degradation of dye waste water is catalyzed
CN107597120B (en) * 2017-09-22 2020-08-04 中石化炼化工程（集团）股份有限公司 Graphene-supported cobalt catalyst and preparation method and application thereof
CN107597120A (en) * 2017-09-22 2018-01-19 中石化炼化工程（集团）股份有限公司 Graphene-supported cobalt series catalyst and its production and use
CN107694570A (en) * 2017-09-30 2018-02-16 江南大学 A kind of preparation method of efficiently cobaltosic oxide graphene nano composite catalyst
CN108786814A (en) * 2018-06-06 2018-11-13 武汉工程大学 A kind of copper cobalt dual-metal/porous carbon nanofiber composite material and preparation method and application
CN109250789A (en) * 2018-09-28 2019-01-22 江苏大学 A kind of preparation method and applications of the compound nethike embrane of graphene oxide/cobalt/cobalt oxide
CN109250789B (en) * 2018-09-28 2021-11-23 江苏大学 Preparation method and application of graphene oxide/cobalt oxide composite net film
CN109622068A (en) * 2019-01-04 2019-04-16 河南师范大学 A kind of preparation method and applications for the load cobalt graphene aerogel composite catalyst that can efficiently activate persulfate
CN109622068B (en) * 2019-01-04 2022-03-01 河南师范大学 Preparation method and application of cobalt-loaded graphene aerogel composite catalyst capable of efficiently activating persulfate
CN110759555A (en) * 2019-11-11 2020-02-07 河南师范大学 Multifunctional water cup integrating purification of tap water and drinking
CN112691676A (en) * 2021-02-01 2021-04-23 河南师范大学 Zn-doped alpha-Fe2O3Preparation method of/graphene aerogel composite catalyst, oxidation system and application thereof
CN112691676B (en) * 2021-02-01 2024-03-01 河南师范大学 Zn doped alpha-Fe 2 O 3 Preparation method of graphene aerogel composite catalyst, and oxidation system and application thereof
CN116328769A (en) * 2023-03-08 2023-06-27 南昌大学 RGO/Co (OH) with sheet-sheet structure 2 Co-coated nanocrystalline catalyst, preparation method and application thereof

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