Simple method for preparing AgxBiOy visible-light responsive catalyst

Abstract

A provided simple method for preparing an AgxBiOy visible-light responsive catalyst comprises the following steps: A, at room temperature, respectively getting Bi2O3 and Ag2O, and preparing reactants according to the molar ratio of 1:1-7; B, grinding in a mortar for 0.5 h; C, transferring the ground powder into a culture dish, putting in a saturated water vapor environment at room temperature, and reacting for 24 h; and D, taking out the sample, and drying at 60 DEG C for 12 h, so as to obtain AgxBiOy, wherein x=3 or x=5, y=3 or y=5. The innovation point is that controllable preparation of the silver bismuthate is realized, in other words, the sample composition is controlled by changing the Bi / Ag ratio, and operation uneasiness and time consumption and energy consumption in a conventional preparation method are overcome. The reactants Bi2O3 and Ag2O are both obtained through market purchase, and the preparation method is simple, carbon discharge in the product production process is reduced, and the preparation method is suitable for large-scale industrialized production application.

Description

technical field [0001] The invention belongs to the technical field of synthesis of photocatalytic products, and in particular relates to a convenient method for preparing AgxBiOy visible light catalyst. Background technique [0002] Among the photocatalysts discovered so far, bismuth-based compounds have great economic and social benefits in the field of environmental pollution control due to their better visible light response characteristics, and have been used more and more. In the current research on bismuth-based compounds, the compounds used as photocatalysts are mainly bismuth oxyhalides BiOX (X=Cl, Br, I), Bi 2 MoO 6 、 Bi 2 WO 6 Wait. The above-mentioned photocatalysts have been widely studied under laboratory conditions, but due to the characteristics of high preparation cost, low efficiency, high energy consumption, and difficulty in recycling, it is difficult to obtain good economic, environmental, and social benefits in practical applications. Studies have ...

AI Technical Summary

Problems solved by technology

Although silver photocatalysts have shown good photocatalytic efficiency in published research papers and patents, the photocatalytic process of the prepared samples is unstable, the preparation process is complicated, time-consuming and costly, and it is difficult to improve it in practical applications. Promotion and utilization

Bi 2 o 3 with Ag 2 Both O can be used as photocatalysts, but the quantum efficiency of the former is low, and the latter is easy to generate oxygen vacancies during the reaction process to capture photogenerated electrons.

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