Multi-metal sulfide semiconductor photocatalytic material and preparation method thereof

Abstract

The invention discloses a multi-metal sulfide semiconductor photocatalytic material and a preparation method thereof. The preparation method comprises the following steps: dissolving soluble metal salt and sulfourea in distilled water to obtain a reaction precursor solution; atomizing the precursor solution by using an ultrasonic atomizer to generate aerosol which is rich in tiny droplets; driving the aerosol to enter a high-temperature tube furnace, reacting under a carrier gas to generate solid powder; collecting the solid powder by using the distilled water; drying the solid powder at 75 to 85 DEG C after the solid powder is washed and centrifuged to obtain the photocatalytic material. The prepared multi-metal sulfide material has the morphology of mesoporous microspheres, and can response to visible light and show photocatalytic activity; organic matters can be decomposed under the existence of a catalyst by utilizing the visible light; energy resources are saved; the multi-metal sulfide semiconductor photocatalytic material is worth of being popularized; the preparation method has the universality in the aspect of preparing the multi-metal sulfide material; the process is simple and feasible; and therefore, the preparation method is favorable for the large-scale generation and application in industry.

Description

technical field [0001] The invention belongs to the field of material preparation and environmental photocatalysis, and in particular relates to a multi-element metal sulfide semiconductor photocatalysis material and a preparation method thereof. Background technique [0002] Environment and energy are two major issues facing human beings in the 21st century. After nearly 40 years of research on semiconductor photocatalysis, it has fully demonstrated the potential and far-reaching application background of photocatalysis technology in clean energy production and environmental pollution control. . However, traditional photocatalytic materials, such as TiO 2 , ZnO and ZnS are all wide-bandgap photocatalysts, which can only be excited by ultraviolet light, and can only use about 4% of the solar energy. Visible light, which accounts for about 46% of the solar energy, cannot be excited. Therefore, the research and development of photocatalytic materials that respond to visible ...

AI Technical Summary

Problems solved by technology

Now many methods have been developed to prepare multi-component metal sulfide semiconductor nanomaterials, such as solid phase method ( Inorg. Chem., 2004, 4(3): 6473. ), coprecipitation method ( New J. Chem., 2002, 26(9): 1196 ),Hydrothermal ( Nanoscale Res Lett. 2011, 6(1): 290. ), solvothermal method ( J. Am. Chem. Soc., 2006, 128( 22): 7222 ), etc., but these usually require a long reaction time, high temperature, high pressure, and an external template agent, so it is not easy to popularize and apply industrially

Therefore, the preparation of multinary metal sulfide semiconductor nanomaterials with excellent performance through simple methods is still a goal that people are constantly pursuing, and it is very challenging.

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