Method for quantitative analysis of photocatalytic performance of silver bromide cluster

Abstract

The invention discloses a method for quantitative analysis of photocatalytic performance of a silver bromide cluster. The method is used for representing and determining the photocatalytic performance of the silver bromide cluster on the basis of density functional theories of quantum chemistry; a stable structure is determined through structure study of the silver bromide cluster; an electronic structure of the silver bromide cluster, an absorption spectrum, and positions of a valence band and a conduction band are analyzed according to the band theory; and the photocatalytic performance of the silver bromide cluster is finally determined. A method for representing and determining the photocatalytic performance of the cluster is concluded and summarized by combining related experiment research literatures. The method does not need any experiment; the photocatalytic performance of the silver bromide cluster can be represented by using a quantum chemistry theory calculation method; and the method can be expanded to determination and representation of the photocatalytic performances of other photocatalysts.

Description

technical field [0001] The invention belongs to the technical field of chemistry and relates to a method for quantitatively analyzing the photocatalytic performance of silver bromide clusters. Background technique [0002] Photocatalyst is a general term for chemical substances that can play a catalytic role under the excitation of photons. There are many methods for measuring its photocatalytic performance, such as: the photoactivity evaluation method of anatase coating film designed by Xu Qiuying of Harbin Institute of Technology, Japan Photocatalyst Association's "Photocatalyst Products Wet Decomposition Ability Determination Method", Taiwan Photocatalyst Industry Development Association "Photocatalyst Air Purification Efficiency Test Method" and so on. However, there are common problems such as complex experimental equipment, long time-consuming, and heavy interpretation of test results. [0003] At present, the more commonly used evaluation method for photocatalytic p...

AI Technical Summary

Problems solved by technology

The crystal structure of the catalyst can be simulated by the quantum chemical calculation method, the absorption spectrum of the catalyst crystal can be obtained, especially the position and composition of the valence band and conduction band of the crystal can be obtained, and the photocatalytic performance of the catalyst can be characterized quantitatively, which is It cannot be measured experimentally. At present, there have been reports in the literature on the photocatalytic performance characterization of semiconductor photocatalysts using quantum chemical calculation methods, but there is no research case for detailed determination and characterization of silver bromide clusters using this method.

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