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Preparation method for reduced-oxidized graphene/cuprous sulfide hybrid structure

A cuprous sulfide, hybrid structure technology, applied in copper sulfide, chemical instruments and methods, inorganic chemistry and other directions, can solve the problems of semiconductor nanomaterial growth regulation and lack of uniformity, and achieves easy commercial production and size controllable. Strong, easy-to-use effects

Inactive Publication Date: 2013-05-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can realize the in situ preparation of graphene-cuprous sulfide hybrid structure to a certain extent, it has shortcomings in the growth control and uniformity of semiconductor nanomaterials on graphene sheets.

Method used

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  • Preparation method for reduced-oxidized graphene/cuprous sulfide hybrid structure
  • Preparation method for reduced-oxidized graphene/cuprous sulfide hybrid structure
  • Preparation method for reduced-oxidized graphene/cuprous sulfide hybrid structure

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preparation example Construction

[0022] A method for preparing a reduced graphene oxide / cuprous sulfide hybrid structure. The method utilizes graphene oxide in-situ reduction and cuprous sulfide in-situ growth to prepare a graphene / cuprous sulfide hybrid structure. The flow chart is as follows figure 1 shown, including the following steps:

[0023] 1) Graphene oxide pretreatment

[0024] The graphene oxide prepared by the improved Hummers method was centrifugally precipitated, then ethanol was added for ultrasonic dispersion and secondary centrifugal precipitation was performed, and the above-mentioned cycle treatment was performed to remove the moisture contained in the graphene oxide.

[0025] (2) Preparation of reduced graphene oxide / cuprous sulfide hybrid structure

[0026] Mix the pretreated graphene oxide with oleylamine and copper salt into a three-necked flask and disperse evenly by ultrasonic; the copper salt used can be copper acetylacetonate, copper sulfate, copper chloride or copper nitrate, and ...

Embodiment 1

[0029] The graphene oxide prepared by the improved Hummers method was centrifuged and precipitated at 12000rpm, then ethanol was added for ultrasonic dispersion for 60min, and then centrifuged at 12000rpm, and the above-mentioned cycle treatment was performed to remove the moisture contained in the graphene oxide. Mix the pretreated 12mg graphene oxide, 68mg anhydrous cupric chloride and 10ml oleylamine into a three-neck flask and ultrasonically disperse for 30min; heat the mixed solution to 100°C and keep it warm for 60min, during which time pumping-filling is repeated. Nitrogen to exclude air and moisture; at the same time, dissolve 32mg of sulfur powder in 10ml of 60°C oleylamine under nitrogen protection, and repeatedly pump air-fill with nitrogen to remove moisture to form a clear solution; when the temperature of the mixed solution rises to 170°C The amine solution was injected and reacted at a constant temperature for 30 minutes; when the reaction was completed and the t...

Embodiment 2

[0031] The graphene oxide prepared by the improved Hummers method was centrifuged and precipitated at 12000rpm, then ethanol was added for ultrasonic dispersion for 60min, and then centrifuged at 12000rpm, and the above-mentioned cycle treatment was performed to remove the moisture contained in the graphene oxide. Mix the pretreated 12mg graphene oxide, 180mg copper acetylacetonate and 10ml oleylamine into a three-necked flask and ultrasonically disperse it for 30 minutes; heat the mixed solution to 140°C and keep it warm for 30 minutes, during which time it is repeatedly pumped-nitrogen to Exclude air and moisture; at the same time, dissolve 48mg of sulfur powder in 10ml of 60°C oleylamine under nitrogen protection, and repeatedly pump air-fill with nitrogen to remove moisture to form a clear solution; when the temperature of the mixed solution rises to 200°C The solution was injected and reacted at a constant temperature for 60 minutes; when the reaction was completed and the...

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Abstract

The invention relates to a preparation method for a reduced-oxidized graphene / cuprous sulfide hybrid structure. The preparation method comprises the following steps: mixing preprocessed oxidized graphene, oleylamine and metal salt in proportion; heating and removing water under the protection of nitrogen, and meanwhile, mixing and dissolving powdered sulfur and hot oleylamine under the protection of nitrogen; injecting sulfur-oleylamine solution into a solution and reacting; and lastly, performing scattering-ultrasonic-centrifugal circulating treatment with alcohol / chloroform mixed liquid, thereby obtaining a purified reduced-oxidized graphene / cuprous sulfide hybrid structure. The ratio of reduced-oxidized graphene to cuprous sulfide or the size of the cuprous sulfide is controlled by controlling the reactant proportion, reaction temperature and time. Compared with the prior art, the invention adopts an in-situ growth method for preparing the reduced-oxidized graphene / cuprous sulfide hybrid structure and has the advantages of simpleness in operation, strong controllability, convenience in commercialized production, and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and specifically relates to a method for preparing a reduced graphene oxide / cuprous sulfide hybrid structure by using in-situ reduction of graphene oxide and in-situ growth of cuprous sulfide. Background technique [0002] Graphene is a two-dimensional atomic crystal composed of a single layer of carbon atoms. Since the preparation of graphene by Giem and Novoselov at the University of Manchester, UK, it has attracted the attention of scientists in many fields including physics, chemistry, materials, and electronics. Pay attention to. In recent years, graphene has been widely used in many fields such as transparent electrodes, lithium-ion batteries, supercapacitors, photovoltaic devices, and composite materials. In particular, the research on the application of graphene in energy conversion has become one of the most active directions in current graphene research. Using graphen...

Claims

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Application Information

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IPC IPC(8): C01B31/04C01G3/12C01B32/198
Inventor 苏言杰张亚非谢敏敏鲁晓楠魏浩
Owner SHANGHAI JIAO TONG UNIV
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