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A method of directly growing uniform rhenium diselenide nanosheets on a substrate electrode, modified electrodes and applications

A base electrode and rhenium diselenide technology, which is applied in chemical instruments and methods, inorganic chemistry, hydrogen production, etc., can solve the problem that rhenium diselenide cannot grow on the electrode, and achieve improved catalytic performance, simple process, The effect of low temperature

Active Publication Date: 2020-08-28
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and deficiencies in the prior art that rhenium diselenide cannot grow on electrodes, and provide a method for directly growing uniform rhenium diselenide nanosheets on substrate electrodes

Method used

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  • A method of directly growing uniform rhenium diselenide nanosheets on a substrate electrode, modified electrodes and applications
  • A method of directly growing uniform rhenium diselenide nanosheets on a substrate electrode, modified electrodes and applications
  • A method of directly growing uniform rhenium diselenide nanosheets on a substrate electrode, modified electrodes and applications

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Embodiment 1

[0042] This embodiment provides a method for growing uniform rhenium diselenide nanosheets directly on carbon cloth electrodes, such as Figure 1~3 .

[0043] Step 101, cleaning of the substrate;

[0044] Step 102, processing of the substrate;

[0045] Step 103, drying of the substrate;

[0046] Step 104, growing uniform rhenium diselenide nanosheets on the carbon cloth by chemical vapor deposition;

[0047] In step 101: the carbon cloth is ultrasonicated for 5 minutes in the order of deionized water, acetone, ethanol, and deionized water, with ultrasonic power of 180 W and frequency of 40 KHz.

[0048] In step 102: soak the cleaned carbon cloth in the piranha solution at 120° C. for 2 hours to further clean the carbon cloth and increase the hydrophilicity of the carbon cloth. After natural cooling, rinse with deionized water.

[0049] In step 103: heat the treated carbon cloth on a heating platform at 80° C. for 10 minutes.

[0050] In step 104: use the chemical vapor d...

Embodiment 2

[0058] This embodiment provides a method for directly growing uniform rhenium diselenide nanosheets on carbon cloth electrodes. In the method provided in this embodiment, except that step 104 controls the growth temperature to 700° C., other steps and conditions are the same as those in Embodiment 1.

[0059] The rhenium diselenide nanosheets prepared in this embodiment, such as Figure 6 and Figure 7 .

Embodiment 3

[0061] This embodiment provides a method for directly growing uniform rhenium diselenide nanosheets on carbon cloth electrodes. In the method provided in this embodiment, it is the same as that in Embodiment 1 except that the growth temperature is controlled to be 600° C. in step 104 .

[0062] The rhenium diselenide nanosheets prepared in this embodiment, such as Figure 8 .

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Abstract

The invention relates to a method for directly growing uniform rhenium diselenide nanosheets on a base electrode, a modified electrode and its application. The method includes the following steps: S1: heating the selenium powder until the selenium powder is gasified; heating the rhenium trioxide and the base electrode, and introducing a reducing gas; S2: after the rhenium trioxide is heated to cracking, the gasified selenium powder mixed with it, continue to heat up to 450-700°C, rhenium diselenide grows and deposits on the base electrode; the mass ratio of selenium powder to rhenium trioxide is 200:1-300:1. In the present invention, rhenium diselenide is directly grown on the substrate electrode by chemical vapor deposition method, and used as an electrode for catalytic hydrogen production, which greatly improves the adhesion between rhenium diselenide and the electrode, and at the same time improves the rhenium diselenide. catalytic. In addition, the temperature of the method is low and the process is simple.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for directly growing uniform rhenium diselenide nanosheets on a base electrode, a modified electrode and its application. Background technique [0002] Hydrogen energy is recognized as a clean energy source, and it is emerging as a low-carbon and zero-carbon energy source. Countries around the world are studying how to produce hydrogen in large quantities and cheaply. Using solar energy to split water is a major research direction. The key to splitting water into hydrogen and oxygen under the action of light is to find a suitable catalyst. Due to the characteristics of mild reaction conditions, high energy utilization rate, and no secondary pollution caused by the photocatalytic decomposition of water to produce hydrogen by semiconductor materials, it has gradually become a research hotspot in the direction of artificial hydrogen production. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G47/00C01B3/04
CPCC01B3/042C01G47/00C01P2002/82C01P2002/85C01P2004/03C01P2004/20Y02E60/36
Inventor 张璋李婧黄文添
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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