Preparation method of flower-like Au/Bi2O2CO3/Bi2O3 photocatalyst

Abstract

The invention relates to a preparation method of a flower-like Au / Bi2O2CO3 / Bi2O3 photocatalyst, and belongs to the field of photocatalytic materials. The method comprises the following steps: (1) dissolving bismuth nitrate, trisodium citrate dihydrate, urea and PVP into ultrapure water, then carrying out hydrothermal reaction on the solution, conducting cooling, filtering and separating after thereaction is finished, and carrying out cleaning, drying and grinding treatment to obtain flower-like Bi2O2CO3; and (2) dispersing the flower-like Bi2O2CO3 powder in methanol to prepare a solution A, adding HAuCl4.4H2O into methanol to prepare a solution B, dropwise adding B into A under the condition of rapid stirring, and conducting stirring to a dry state, and scraping off the sample, conductinguniform grinding, and conducting calcining to obtain Au / Bi2O2CO3 / Bi2O3. According to the invention, the prepared flower-like Au / Bi2O2CO3 / Bi2O3 photocatalyst has very good photocatalytic activity under visible light.

Description

technical field [0001] The invention relates to a preparation method, in particular to a flower-like Au / Bi 2 o 2 CO 3 / Bi 2 o 3 A method for preparing a photocatalyst belongs to the field of photocatalytic materials, especially the technical field of visible light materials. Background technique [0002] With the development of social economy, it has brought a series of environmental pollution, which in turn restricts economic development and endangers human health. Photocatalytic technology is an emerging method of treating pollutants developed in recent decades. It can effectively use natural renewable solar energy as a driving force, and use semiconductor metal oxides as catalysts to achieve a series of physical and chemical processes. The reaction process achieves the purpose of treating pollutants, which is an ideal and efficient method for controlling environmental pollution. [0003] Bi 2 o 2 CO 3 As a new type of semiconductor photocatalyst, it has become a ...

AI Technical Summary

Problems solved by technology

The reagents used in the preparation method of the present invention are non-toxic, harmless, green reagents without secondary pollution, and will not pollute the environment during the use of the catalyst, but the absorption of visible light is relatively limited, and the sun Visible light accounts for about 45% of the light; and the larger band gap limits the Bi 2 o 2 CO 3 practical application, and the effect of the present application cannot be reached, so it still has the above-mentioned defects

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