A kind of heterogeneous structure catalyst and preparation method using solar energy to decompose water to produce hydrogen

Abstract

The invention discloses a heterogeneous structure catalyst and a preparation method for decomposing water to produce hydrogen by using solar energy, and belongs to the preparation method of semiconductor photocatalytic materials. Steps: 1) SiO 2 Disperse the nanospheres in deionized water, add urea and nickel nitrate and mix evenly; 2) transfer the mixed solution to a hydrothermal reaction kettle, and react at 105°C for 12h; 3) after natural cooling, centrifuge and dry the product to obtain SiO 2 @nickel silicate powder; 4) SiO 2 Disperse @nickel silicate into deionized water, add sodium sulfide, and adjust the pH of the mixed solution with NaOH; 5) Transfer the mixed solution to a hydrothermal reaction kettle and react at 160°C for 12‑20h; 6) After natural cooling, centrifuge to collect the black Precipitation and vacuum drying to obtain NiS hollow nanosphere powder; 7) Dissolve NiS and glycerin in water, add zinc chloride, indium chloride and thioacetamide; 8) react the solution at 80°C for 2h under stirring; 9) After centrifugation, washing and drying, NiS@ZnIn was obtained 2 S 4 . Pros: NiS@ZnIn 2 S 4 Spherical heterostructures have large specific surface area, low density, good surface permeability and visible light response.

Description

technical field

[0001] The invention relates to a preparation method of a semiconductor photocatalytic material, in particular to a heterogeneous structure catalyst and a preparation method for utilizing solar energy to decompose water to produce hydrogen. Background technique

[0002] With the continuous development of the global economy, human demand for energy continues to grow, and the large-scale exploitation and use of traditional fossil fuels has brought about problems such as greenhouse effect and environmental pollution. As a high-energy-density energy source, hydrogen energy has many advantages such as cleanness, high efficiency, safety, storability, and transportability. It is expected to replace traditional fossil fuels as a new energy carrier. At present, the traditional hydrogen production methods mainly include: hydrogen production from coal, hydrogen production from natural gas, hydrogen production from methanol, and hydrogen production from electrolyzed wate...

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