Method for preparing p-CoO/n-CdS compound semiconductor photocatalyst

Abstract

The invention discloses a method for preparing a p-CoO / n-CdS compound semiconductor photocatalyst, which comprises the following steps: in a ratio of the weight percentage of ammonium salt to cadmium salt to thiocarbamide to deionized water of (0.001 to 90 percent): (0.001 to 70 percent): (0.001 to 90 percent): (0.001 to 90 percent), mixing the ammonium salt, cadmium salt, thiocarbamide and deionized water for reaction, filtering, washing, roasting and grinding to obtain CdS solid powder; and in a ratio of the weight percentage of CdS solid powder to cobalt salt to ammonia water to deionized water of (0.001 to 90 percent): (0.001 to 70 percent): (0.001 to 90 percent): (0.001 to 90 percent), mixing the cobalt salt, ammonia water and deionized water for reaction, adding the CdS solid powderfor three times, and performing stirring, ultrasonic dispersion, distillation at reduced pressure, heat treatment, washing, filtering, roasting and grinding to obtain the p-CoO / n-CdS compound semiconductor photocatalyst by. The prepared p-CoO / n-CdS compound semiconductor photocatalyst can be applied to photocatalytic degradation of organic pollutants, photocatalytic decomposition of water for hydrogen production and manufacture of solar cells under the condition that ultraviolet light, visible light and sunlight are used as light sources respectively.

Description

technical field [0001] The invention relates to a preparation method of a p-CoO / n-CdS composite semiconductor photocatalyst, belonging to the field of photocatalytic materials. Background technique [0002] With the acceleration of the global industrialization process, the sharp increase in energy consumption, the depletion of fossil fuels, the deepening of the oil crisis, environmental crisis and energy 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 deve...

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