A kind of preparation method of cadmium sulfide and platinum modified sulfur indium copper nanodisk photocatalyst

Abstract

The invention provides a method for preparing a cadmium sulfide and platinum-modified sulfur indium copper nanodisc photocatalyst, comprising the following steps: step 1, mixing cuprous chloride, indium trichloride tetrahydrate, thiourea and oleylamine, using One-step solvothermal preparation of CuInS 2 The nanoparticles were washed by centrifugation and dissolved in chloroform to obtain CuInS 2 solution; step 2, take CuInS 2 The solution removes the solvent and adds oleylamine and 1-octadecene to react at the first set temperature to obtain a reaction solution. During the reaction, the Cd precursor solution dissolved in oleylamine is added to the reaction solution to obtain the first mixed solution, which is kept warm and then cooled. Centrifuge and dry after reaching room temperature to obtain CIS / CdS nanoparticles; step 3, mix oleylamine, oleic acid, 1,2-hexadecanediol and diphenyl ether to obtain a second mixed solution, add platinum acetylacetonate, CdS / CuInS 2 The third mixed solution of nanoparticles and 1,2-dichlorobenzene is heated to the second set temperature and cooled to room temperature after being kept warm, and after centrifugal washing, Pt-CIS / CdS nanoparticles are obtained, that is, cadmium sulfide and platinum-modified sulfur Indium Copper Nanodisk Photocatalyst.

Description

technical field [0001] The invention relates to a preparation method of a photocatalyst, in particular to a preparation method of a cadmium sulfide and platinum-modified copper sulfide nanometer disk photocatalyst. Background technique [0002] Hydrogen energy is considered as an ideal energy storage carrier due to its unique advantages of high energy density and environmentally friendly properties. Using semiconductor photocatalysts, the continuous and direct conversion of solar energy and fuels can be achieved through photocatalytic water splitting and hydrogen production technology driven by renewable solar energy, which is an effective way to solve environmental problems and global energy crisis. The design of visible-light-driven photocatalysts is therefore crucial, as it plays a decisive role in practical hydrogen production applications. Among various photocatalysts, metal sulfides such as CuInS 2 , ZnIn 2 S 4 and AgInS 2 , are one of the most popular photocataly...

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Problems solved by technology

[0005] In the existing related technology, the chemical solution method is adopted, and the method of element doping (Ho-CuInS 2 ) to change the bandgap width of sulfur indium copper (CIS), due to the large randomness of element doping, it is not easy to control, so that the inherent electron-hole recombination rate of CIS has not been significantly improved, so its inherent defects are not has been substantially compensated, so that its hydrogen production rate has not been significantly improved

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