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Method for synthesizing graphene-containing composite thin film material

A graphene composite, graphene film technology, applied in electrolytic coatings, electrophoretic plating, coatings, etc., can solve problems such as pollution, and achieve the effect of improving catalytic efficiency

Inactive Publication Date: 2011-05-18
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Recently, the literature has reported the reduction of oxygen and methanol on graphene as a carrier material (Electrochem.Commun.2009, 11, 954; Nano Letters, 2009, 9, 2255), but the experimental process involves the use of some strong reducing agents , such as sodium borohydride and hydrazine hydrate, which have caused great pollution to the surrounding environment, so how to obtain graphene carrier materials through a simple and pollution-free synthesis method has become a topic of great interest at present

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  • Method for synthesizing graphene-containing composite thin film material

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Embodiment 1

[0025] 1.1 Treatment of Conductive Glass Substrate

[0026] First, cut the conductive glass into 15mm×25mm, ultrasonically clean it with distilled water and ethanol for 30 minutes, and dry it with nitrogen.

[0027] 1.2 Electrophoretic deposition of graphene oxide film on the surface of conductive glass

[0028] Conductive glass is used as the anode, a stainless steel sheet of the same size is used as the cathode, the graphene oxide suspension is used as the deposition medium, and the deposition is performed at 150-160V for 45-60 seconds.

[0029] 1.3 Graphene film obtained by cyclic voltammetry reduction of graphene oxide

[0030] The graphene oxide film was used as the working electrode, the silver-silver chloride electrode and the platinum wire electrode were used as the reference electrode and the auxiliary electrode, respectively, and 0.1mol L -1 Aqueous KCl solution is an electrolyte solution, within the range of 0.0V-1.0V at 10mV s -1 The scanning speed is scanned 10...

Embodiment 2

[0036] 2.1 Treatment of Conductive Glass Substrate

[0037] First, cut the conductive glass into 15mm×25mm, ultrasonically clean it with distilled water and ethanol for 30 minutes, and dry it with nitrogen.

[0038] 2.2 Electrophoretic deposition of graphene oxide film on the surface of conductive glass

[0039] Conductive glass is used as the anode, a stainless steel sheet of the same size is used as the cathode, the graphene oxide suspension is used as the deposition medium, and the deposition is performed at 150-160V for 45-60 seconds.

[0040] 2.3 Reduction of graphene oxide by potentiostatic method to obtain graphene film

[0041] The graphene oxide film was used as the working electrode, the silver-silver chloride electrode and the platinum wire electrode were used as the reference electrode and the auxiliary electrode, respectively, and 0.1mol L -1 The KCl aqueous solution is an electrolyte solution, and the graphene oxide film is reduced at a constant potential of -0...

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Abstract

The invention discloses a method for synthesizing a graphene-containing composite thin film material. The method comprises: firstly, preparing a graphene oxide transparent thin film with uniform thickness by using graphene oxide colloidal suspension as a deposition medium; performing in-situ reduction on the graphene oxide thin film by an electrochemical process to obtain a graphene thin film; and finally, depositing uniformly-dispersed platinum nano particles on the surface of the obtained raphene thin film by a constant-potential depositing technique to obtain a platinum-graphene nano composite thin film. The catalytic behavior of the prepared composite thin film material on methanol is studied by using the prepared composite thin film material as an electrode. The experiment result proves that the composite thin film has remarkable catalytic effect on methanol.

Description

technical field [0001] The invention relates to a synthesis method of a composite film material containing graphene, in particular to a synthesis method of a composite material containing platinum and graphene. Background technique [0002] Graphene, as a new type of carbon material, is composed of a dense layer of carbon atoms wrapped in a honeycomb crystal lattice. It is the thinnest two-dimensional material in the world, with a thickness of only 0.35nm. Graphene sheets have attracted the attention of many researchers due to their excellent electrical and mechanical properties and high aspect ratio. At present, the application research of this material in supercapacitor, field emission, nanoelectronics and other fields has been widely discussed (see Science 2008, 320, 356.; Nano Lett. 2008, 8, 1704.). In addition, due to its good electrical conductivity and large specific surface area, it is expected that it will have broad application prospects as catalyst support materi...

Claims

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Application Information

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IPC IPC(8): C25D13/02C25D13/22
Inventor 王金清刘胜杨生荣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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