Preparation method of cadmium sulfide and platinum modified copper indium sulfide nanodisk photocatalyst

Abstract

The invention provides a preparation method of a cadmium sulfide and platinum modified copper indium sulfide nanodisk photocatalyst. The method comprises the following steps: step 1, mixing cuprous chloride, indium chloride tetrahydrate, thiourea and oleylamine, preparing CuInS2 nanoparticles by adopting a one-step solvothermal method, centrifugally washing the CuInS2 nanoparticles, and dissolving the CuInS2 nanoparticles in chloroform to obtain a CuInS2 solution; step 2, taking the CuInS2 solution, removing the solvent, adding oleylamine and 1-octadecene, reacting at a first set temperature to obtain a reaction solution, adding a Cd precursor solution dissolved in the oleylamine into the reaction solution during the reaction to obtain a first mixed solution, carrying out heat preservation, cooling to room temperature, and carrying out centrifugal drying to obtain CIS / CdS nanoparticles; and step 3, mixing oleylamine, oleic acid, 1, 2-hexadecanediol and diphenyl ether to obtain a second mixed solution, adding a third mixed solution of platinum acetylacetonate, the CdS / CuInS2 nano-particles and 1, 2-dichlorobenzene, heating to a second set temperature, carrying out heat preservation, cooling to room temperature, and carrying out centrifugal washing to obtain Pt-CIS / CdS nano-particles, namely the cadmium sulfide and platinum modified copper indium sulfide nano-disc 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 sulfur indium copper nano disc photocatalyst. Background technique [0002] Hydrogen energy is considered as an ideal energy storage carrier due to its unique advantages of high energy density and environmental protection characteristics. Using semiconductor photocatalysts to produce hydrogen through photocatalytic water splitting technology driven by renewable solar energy can realize the continuous direct conversion of solar energy and fuel, which is an effective way to solve environmental problems and the global energy crisis. Therefore, the design of visible-light-driven photocatalysts is 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 photocatalysts ...

AI Technical Summary

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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