Method for preparing noble-metal-supported p-NiO/n-NiFe2O4 composite semiconductor photocatalyst

Abstract

The invention discloses a method for preparing a noble-metal-supported p-NiO / n-NiFe2O4 composite semiconductor photocatalyst. The method comprises the following steps of: 1, sequentially performing microwave reaction on nickel salt, iron salt, citric acid, alkali and deionized water which are taken as raw materials, performing ultrasonic dispersion, heating and reacting, washing, performing ultrasonic dispersion, filtering, drying, roasting and grinding to obtain NiFe2O4 solid powder; 2, sequentially reacting the NiFe2O4 solid powder, nickel salt, alkali and deionized water which are taken asraw materials, performing ultrasonic dispersion, dehydrating under reduced pressure, performing heat treatment, washing, performing ultrasonic dispersion, filtering, drying, roasting and grinding to obtain p-NiO / n-NiFe2O4 solid powder; and 3, sequentially stirring the p-NiO / n-NiFe2O4 solid powder, a noble metal compound, ethanol and deionized water which are taken as raw materials and dissolving,performing ultrasonic dispersion, performing photochemical deposition reaction, removing a solvent under reduced pressure, performing heat treatment, washing, filtering, drying, roasting and grindingto obtain the noble-metal-supported p-NiO / n-NiFe2O4 composite semiconductor photocatalyst.

Description

technical field [0001] The invention relates to a noble metal loaded p-NiO / n-NiFe 2 o 4 The invention discloses a method for preparing a composite semiconductor photocatalyst, belonging to the field of photocatalytic materials. Background technique [0002] Driven by the energy crisis and environmental crisis, the development and utilization of renewable energy has become a hot spot of global concern. Solar energy is the most abundant energy available to human beings. It is an inexhaustible, inexhaustible, pollution-free, cheap energy that can be used freely and peacefully by all countries in the world. It is also a variety of renewable energy such as biomass energy, wind energy, Ocean energy, water energy and other energy sources. For this reason, the governments of various countries attach great importance to the development and utilization of solar energy, and the development and utilization of solar energy has become a hot research field that governments have invested...

AI Technical Summary

Problems solved by technology

At present, regarding noble metal loaded p-NiO / n-NiFe 2 o 4 Research on compound semiconductor photocatalysts has not been reported in the literature