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Preparation method of two-dimensional molybdenum selenide function material electrolysis water hydrogen production catalyst

A functional material, molybdenum diselenide technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, electrolysis processes, etc. problems, to achieve the effect of promoting electron transfer, promoting wide application, and increasing active sites

Active Publication Date: 2017-11-24
HARBIN INST OF TECH
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Problems solved by technology

The first method is more random, the size of the product is not easy to control, and it is difficult to form a regular array

Method used

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  • Preparation method of two-dimensional molybdenum selenide function material electrolysis water hydrogen production catalyst
  • Preparation method of two-dimensional molybdenum selenide function material electrolysis water hydrogen production catalyst
  • Preparation method of two-dimensional molybdenum selenide function material electrolysis water hydrogen production catalyst

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Embodiment Construction

[0033] The present invention will be described in further detail below: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following examples.

[0034] The preparation method of a two-dimensional molybdenum selenide functional material electrolyzing water hydrogen production catalyst involved in this embodiment includes:

[0035] Step 1, preparing monodisperse silica solid spheres with a diameter of 430 nanometers. The homogeneous mixture of tetraethyl orthosilicate and absolute ethanol is quickly added to the uniform mixture of ammonia water, absolute ethanol and deionized water, and do not touch the wall of the reaction vessel during the addition process. After rapid magnetic stirring for 60 seconds, Stir slowly for 2 hours to obtain a white solid powder, centrifuge, wash with absolute ethanol and deionized wat...

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Abstract

The invention discloses a preparation method of a two-dimensional molybdenum selenide function material electrolysis water hydrogen production catalyst, belonging to the technical field of preparation methods of electro-catalysis materials. The preparation method comprises the followings steps: (1) preparing monodisperse silicon dioxide solid spheres with the diameters of 430 nanometers; (2) regularly assembling and arraying the prepared silicon dioxide solid spheres on an interface of air and water, dropwise adding monodisperse silicon dioxide sphere water-ethanol suspension liquid onto a glass sheet suspended on the surface of deionized water so as to gradually and regularly array the monodisperse silicon dioxide spheres on the water surface along the edge of the glass sheet to form a single-layer array, finally truncating a silicon dioxide sphere ordered structure by virtue of silicon dioxide / silicon substrate, and repeatedly carrying out the operations; (3) growing a molybdenum diselenide / silicon dioxide shell-core composite material ordered structure array by virtue of a chemical vapor deposition technique; and (4) removing an internal silicon dioxide template so as to obtain a molybdenum selenide function material grading type hollow sphere ordered structure array.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for hydrogen production by electrolyzing water, which is a two-dimensional molybdenum selenide functional material, and belongs to the technical field of preparation methods of electrocatalytic materials. Background technique [0002] In recent years, the electrochemical catalysis of hydrogen evolution reaction has become a very important electrochemical reduction process to split water to generate hydrogen. Because of its very important role in energy conversion and energy storage, it has attracted extensive attention from the scientific community. focus on. The key issue in electrochemical water splitting is to find catalytic materials with high activity, low cost, good stability and easy availability. [0003] As we all know, the catalytic performance of a catalyst mainly depends on the number of active sites of the catalytic material and the conductivity of the material. The more the numb...

Claims

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Application Information

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IPC IPC(8): B01J27/057C25B1/04C25B11/06
CPCB01J27/0573C25B1/04C25B11/04Y02E60/36
Inventor 胡平安陈晓爽胡文平刘光波曹文武
Owner HARBIN INST OF TECH
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