Method for rapidly preparing carbon nanotube-loaded cuprous oxide photocatalyst

Abstract

The invention relates to a method for rapidly preparing a carbon nanotube-loaded cuprous oxide photocatalyst. The photocatalyst is prepared to meet the requirements for organic pollutant degradation and treatment. The photocatalyst is prepared by using carbon nanotubes and copper acetate as raw materials. Firstly, a photocatalyst precursor is prepared, the photocatalyst precursor is treated in a water bath, heated, dried and calcined with microwave to prepare the nanotube-loaded cuprous oxide photocatalyst powder material, and the product is black powder. The diameters of cuprous oxide particles in the product are less than or equal to 40 nm, the product purity is high and reaches 98%, and the photocatalysis activity can reach 97.6% to the maximum. The preparation method is advanced, has a short and fast process flow and full and accurate data, reduces the consumption of raw materials, is suitable for industrial production, has a high practical value, and is very ideal for rapidly preparing carbon nanotube-loaded cuprous oxide photocatalysts.

Description

technical field [0001] The invention relates to a rapid preparation method of a carbon nanotube-loaded cuprous oxide photocatalyst, belonging to the technical field of photocatalyst preparation and application. Background technique [0002] There are a large number of organic pollutants in industry and daily life, and the accumulation of these organic pollutants has caused varying degrees of pollution to the surrounding environment, so organic pollutants must be degraded and treated in a timely manner. [0003] The most effective way to degrade organic pollutants is to use photocatalysts such as TiO 2 , ZnS semiconductor material catalysts, but these materials have a large band gap and can only be excited by ultraviolet light with a wavelength of 300-400nm, while the components of the solar radiation energy reaching the surface are less than 5% of the wavelength, making the catalyst not efficient Catalyzed reactions using natural light. [0004] Cu 2 O is a common semicon...

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Problems solved by technology

[0003] The most effective way to degrade organic pollutants is to use photocatalysts such as TiO 2 , ZnS semiconductor material catalysts, but these materials have a large band gap and can only be excited by ultraviolet light with a wavelength of 300-400nm, while the components of the solar radiation energy reaching the surface are less than 5% of the wavelength, making the catalyst not efficient Catalytic reactions using natural light

[0004] Cu 2 O is a common semiconductor material with a band gap of 2-2.2eV, which can directly absorb most of the visible light and has a high photoelectric conversion rate; but Cu 2 The photogenerated electrons and holes of O are easy to recombine, resulting in a decrease in catalytic efficiency; different Cu 2 The crystal size of O will distort the crystal structure, increase the asymmetry of the crystal, and reduce the probability of recombination of photoelectrons and holes; hole recombination rate, and reduces the Cu 2 O photocorrosion, it is necessary to increase the Cu 2 Stability and photocatalytic performance of O; Cu supported on carbon nanotubes 2 O preparation of photocatalysts can obtain better photocatalytic activity and stability, but the preparation process is cumbersome, the industrial cost is high, and the overall effect is not good. This technology is still in the research stage

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