Nano znniins solid solution photocatalyst and preparation method thereof

Abstract

The invention discloses a nano ZnNilnS solid solution photocatalyst and a preparation method thereof. The chemical formula of the photocatalyst is ZnxNiylnyS(x+2y). The method comprises the following steps: weighing 1-8 parts by weight of inorganic zinc salt, 0.01-1.8 parts by weight of inorganic nickel salt, 0.005-0.9 part by weight of inorganic indium salt and 2-16 parts by weight of sulfur source; adding the inorganic zinc salt, the inorganic nickel salt and the inorganic nickel salt to deionized water, and stirring uniformly to obtain mixed liquid; adding the sulfur source into the mixed liquid, and ultrasonically dispersing for 10-15 minutes to obtain dispersion liquid; and feeding the dispersion liquid into a microwave reaction kettle, performing microwave hydrothermal reaction at the temperature of 160-180 DEG C for 40-45 minutes, cooling, centrifugally washing the reaction product for 2-3 times with deionized water, and finally drying to obtain the nano ZnNilnS solid solution photocatalyst. According to the preparing method, the ZnNilnS solid solution photocatalyst nanoparticles which are uniform and small in size can be obtained in short time, the average particle diameter is 15nm or so, and the specific surface area of the nanoparticles can reach up to 150m<2>g<-1>.

Description

technical field [0001] The invention relates to the field of solid solution photocatalysts, in particular to a nanometer ZnNiInS solid solution photocatalyst and a preparation method thereof. Background technique [0002] Among the many means of hydrogen energy development, the use of solar photocatalytic water splitting to produce hydrogen is one of the most ideal and promising means. At present, most of the photocatalytic water splitting semiconductor materials that have been studied are concentrated in TiO 2 , ZnO and ZnS and other wide bandgap semiconductor materials [1] , the bandgap energy of these wide-bandgap semiconductors can only be excited by ultraviolet light, which accounts for about 4% of sunlight, and ultraviolet light accounts for less than 5% of the energy in the solar spectrum. Hydrogen production catalysts are more meaningful for industrial application. [0003] The spectral response range and photocatalytic hydrogen production activity of a semiconduct...

AI Technical Summary

Problems solved by technology

However, according to the reported ZnS solid solution, most of the composite photocatalysts with good hydrogen production activity and quantum efficiency contain Cd element, and Cd is a wide range of environmental pollutants with high toxicity, which is harmful to animals, plants and human beings are very dangerous

Images