Method for growing upright three-dimensional netlike noble metal nano-plate on boron-doped diamond substrate

Abstract

The invention relates to a method for growing an upright three-dimensional netlike noble metal nano-plate on a boron-doped diamond substrate, which comprises the following steps: firstly, when electro-deposition is used in an electrochemical technique, using hydrogen bubbles generated on the surface of a boron-doped diamond film substrate material as a dynamic template so as to obtain an upright three-dimensional netlike nano Zn plate; and secondly, in the process of performing a chemical method, using the upright three-dimensional netlike nano Zn plate as a template, and through substitution reactions, using high valent noble metal to replace the upright three-dimensional netlike nano Zn plate so as to obtain the upright three-dimensional netlike noble metal nano-plate on a boron-doped diamond film. The special structure obtained by the method not only can give full play to the advantages of the boron-doped diamond, but also can greatly improve the specific surface area of the noble metal and effectively promote the diffusion of active reaction molecules in a hole pipeline by a netlike nano structure. Simultaneously, the special combination ensures that a working electrode obtains high electrochemical properties in material types and structural shapes.

Description

Technical field [0001] The present invention is a method of preparation of working electrodes. Background technique [0002] The core of electrochemical reactions is high -performance, high -stability electrode materials, and the electrochemical performance of the electrode is mainly determined by the materials composed of it and the micro -appearance of the electrode.Important aspects of staffing. Invention content [0003] The purpose of the present invention is to provide a three -dimensional network porous upright nano -precious metal tablets on the basement of Boron Diamond Mastel, so as to obtain advanced electrodes with a large application prospect. [0004] The present invention uses boron -doped diamond membrane as the base material. This material has the advantages of the electrodes of the electrical windows wide, low background current, stable surface status, good reproducibility, and corrosion resistance. It is an ideal electrode material; At the same time, using thi...

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Problems solved by technology

[0004] The present invention uses boron-doped diamond film as the base material. This material has the advantages of wide potential window, low background current, stable surface state, good reproducibility and corrosion resistance, etc., and is an ideal electrode material. At the same time, using this technology to construct upright three-dimensional network-like noble metal nanosheets on the substrate can not only give full play to the above-mentioned advantages of boron-doped diamond, but also overcome the shortcoming of low catalytic activity of boron-doped diamond; The noble metal has a good supporting effect, which can improve the electrocatalytic activity and anti-poisoning ability of the noble metal; in addition, the three-dimensional network shape not only ensures a large surface area, but also ensures the full utilization of active molecules in the electrochemical reaction process.

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