Electrodeposition preparation method of carbon nanotube/transition metal compound composite material

Abstract

The invention provides an electrodeposition preparation method of a carbon nanotube / transition metal compound composite material. The method comprises the following steps: adding carbon nanotubes into a solvent, carrying out ultrasonic treatment to obtain a suspension, adding the suspension to a preprocessed glassy carbon electrode surface in a dropwise manner, and naturally air-drying to form a uniform carbon nanotube thin layer in order to obtain a carbon nanotube modified glassy carbon electrode; adding a precursor A and a support electrolyte into deionized water, adding a precursor B when necessary, and adjusting the pH value to 0-13 by boric acid and / or sodium hypophosphite to obtain an electroplating solution; and electroplating the carbon nanotube modified glassy carbon electrode in the electroplating solution, cleaning with water, naturally drying at normal temperature, and scrapping a carbon nanotube / transition metal compound composite material off the surface of the glassy carbon electrode by using a blade to obtain the carbon nanotube / transition metal compound composite material. The method has the advantages of simple operation and easy large scale production; and the prepared composite material has great advantages in catalytic hydrogen evolution and energy conversion, and can be applied in the fields of production of hydrogen through photocatalytic water decomposition, and photoelectric conversion.

Description

(1) Technical field [0001] The invention belongs to the field of nanocomposite materials research, in particular to an electrodeposition preparation method of a carbon nanotube / transition metal compound composite material with controllable particle size, and the carbon nanotube / transition metal compound composite material is M2Yx / CNTs or M1- M2Yx / CNTs, wherein, M1=Fe, Co, Ni, Cu or Zn, M2=Mo, W or a mixture of the two in any proportion, Y=S, Se or a mixture of the two in any proportion, x=2, 3 or 4. (2) Background technology [0002] The energy crisis and the environmentally harmful gases produced by fossil fuels force us to seek clean and renewable energy to replace traditional fuels, and hydrogen energy will surely become an ideal energy carrier. Electricity is produced at a high rate without any polluting exhaust, and water is the only reaction product. However, although hydrogen is one of the most abundant elements on earth, molecular hydrogen only exists in trace amou...

AI Technical Summary

Problems solved by technology

For example, molybdenum sulfide, although it has some potential catalytic value, its poor bulk conductivity and extremely low micron-scale activity limit its practical application in catalysis.

In recent years, some researchers have used methods such as chemical vapor deposition, hydrothermal or solvothermal, and chemical exfoliation to obtain catalysts for hydrogen evolution with better performance. However, these methods have harsh high-temperature and high-pressure conditions, environmental pollution, and high production costs. The problem

The currently prepared catalysts still have some disadvantages: (1) The particles of the catalyst are small and easy to agglomerate; (2) The composite interface between the material and the substrate is not ideal, and the conductivity is not smooth enough; (3) The performance of the catalyst has not yet reached the ideal level. high

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