Production method of metal nano-particle doped flexible self-supporting graphene film

A technology of metal nanoparticles and graphene films, which is applied in the direction of graphene, nano-carbon, non-metallic elements, etc., can solve the problems of many operation steps, less preparation research, and complicated methods, and achieve low process requirements and low experimental steps. The effect of less and simple operation

Inactive Publication Date: 2017-05-24
SOUTHEAST UNIV
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Problems solved by technology

In conclusion, the current methods for preparing metal nanoparticles-modified reduced graphene oxide prepared by chemical methods are complex and require many steps, usually requiring two-step reduction to complete.
Moreover, the prepared composite materials are all graphene films with surface-modified metal nanoparticles, and the preparation of graphene films internally doped with metal nanoparticles is relatively less researched.

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  • Production method of metal nano-particle doped flexible self-supporting graphene film
  • Production method of metal nano-particle doped flexible self-supporting graphene film

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preparation example Construction

[0020] The preparation method of the flexible self-supporting graphene film doped with metal nanoparticles of the present invention comprises the following steps:

[0021] (1) According to the improved Hummers method (ACS Nano 4 (8): 4806 (2010), Improved synthesis of graphene oxide), with graphite as raw material, the preparation concentration is the graphene oxide aqueous solution of 0.2~3mg / ml; The metal salt aqueous solution The concentration is 0.1-20wt.%.

[0022] (2) Mix the graphene oxide solution and the metal salt solution evenly, and the mass ratio of the metal salt to the graphene oxide is 0.1˜10:1. Titrating the mixed solution on the plasma-surface-treated solid substrate, and further vacuum-drying at 50-100 degrees Celsius for 0.5-5 hours to obtain a graphene oxide film;

[0023] (3) Put the thin film on the solid substrate into the ascorbic acid aqueous solution with a concentration of 0.1-10wt.%, and then react at 60-120 degrees Celsius for 1-5 hours to obtain...

Embodiment 1

[0025] Example 1: Preparation of flexible self-supporting graphene conductive film internally doped with nickel nanoparticles

[0026] (1) According to the improved Hummers method (documentation ACS Nano 4(8):4806(2010), Improvedsynthesis of graphene oxide), using graphite as raw material, the graphene oxide aqueous solution whose concentration is 0.5mg / ml is prepared; the configuration concentration is 2mg / ml of nickel acetate aqueous solution;

[0027] (2) Mix the graphene oxide solution and the nickel acetate solution evenly, and the mass ratio of the nickel acetate to the graphene oxide is 0.2:1. The mixed solution was titrated on the plasma surface treated solid substrate, and further vacuum dried at 60 degrees Celsius for 0.5h to obtain a graphene oxide film;

[0028] (3) Put the graphene oxide film on the glass substrate into the ascorbic acid aqueous solution with a concentration of 0.5wt.%, and react for 1h at 95 degrees Celsius to obtain a self-supporting graphene ...

Embodiment 2

[0030] Example 2: Preparation of flexible self-supporting graphene conductive film doped with gold rice particles on the surface

[0031] (1) According to the improved Hummers method (ACS Nano 4 (8): 4806 (2010), Improved synthesis of graphene oxide), graphite is used as raw material to prepare a graphene oxide aqueous solution with a concentration of 2 mg / ml; the configuration concentration is 4 mg / ml Chlorauric acid aqueous solution;

[0032] (2) uniformly titrate the graphene oxide aqueous solution on the glass substrate treated with plasma surface, and further vacuum-dry 1h at 75 degrees Celsius to obtain the graphene oxide film; further titrate the chloroauric acid solution on the graphene oxide film, chlorine The mass ratio of gold acid and graphene oxide is 2:1. and dried under vacuum at 60 °C for 2 h.

[0033] (3) Put the film on the substrate into a 1.5wt.% ascorbic acid aqueous solution, and react at 95 degrees Celsius for 1 hour to obtain a self-supporting graphen...

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Abstract

The invention discloses a production method of a metal nano-particle doped flexible self-supporting graphene film. The method comprises the following steps: mixing graphene with a metal salt solution, titrating the obtained mixed solution on a solid substrate, and drying the mixed solution to form a film; placing the film in an aqueous solution of ascorbic acid, and carrying out heating reduction to obtain the flexible self-supporting graphene film with the internal doped with metal nano-particles; titrating an aqueous solution of graphene oxide on a solid substrate, and drying the mixed solution to form a film; placing the film in the aqueous solution of ascorbic acid, and carrying out heating reduction to obtain the flexible self-supporting graphene film with the surface doped with metal nano-particles. The method has the advantages of simplicity in preparation, few reaction steps, convenience in operation, simple requirements of devices and technologies, cheap raw materials, low cost, and realization of the graphene film with the internal doped with metal nano-particles and the graphene film with the surface doped with metal nano-particles.

Description

technical field [0001] The invention belongs to the technical field of graphene composite material preparation, in particular to a method for preparing a flexible self-supporting graphene film doped with metal nanoparticles. Background technique [0002] Graphene is a two-dimensional layered, single-atom-thick carbon material composed of sp 2 Hybridized carbon atoms are arranged in an orderly manner on a two-dimensional plane. Since its discovery in 2004, graphene has attracted intense attention due to its unique monoatomic layer thickness and planar structure formed by hybridized carbon atoms, high mechanical properties, excellent thermal conductivity and special photochemical properties, and It is used in many fields, such as supercapacitors, nanoelectrochemistry, biological and chemical sensors, and hydrogen storage. [0003] Combining metal nanoparticles and graphene materials can further expand the application of graphene and improve its performance. There are two ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184
CPCC01B2204/22C01B2204/26
Inventor 徐华项建新张明坤路一飞顾忠泽
Owner SOUTHEAST UNIV
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