化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (6) : 283-287.

开发与应用

全无机卤化钙钛矿复合光催化剂的可见光催化性能研究

^1,2,3,4*

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Visible-light photocatalytic activity of all inorganic halogenated perovskite composite

Li Yankun¹, Zhang Dongqing², Niu Xiaojun^1,2,3,4, Song Qi¹, Ma Jinling¹, Lai Senchao¹

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Received		Published
2019-11-09		2020-06-20
Issue Date	Revised Date
2020-07-02	2019-11-09

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摘要

全无机卤化钙钛矿CsPbX₃(X=I,Br,Cl)近年来引起了越来越多的关注,并由于其优异的光电性能而被广泛用于太阳能电池和发光二极管。将全无机卤化钙钛矿应用于有机污染物的光催化降解领域,通过重结晶法在室温下合成高纯度的Au-CsPbBr₃@GO复合光催化剂,进一步降低了钙钛矿型复合光催化剂的制备成本。Au-CsPbBr₃@GO复合光催化剂用于降解水中不溶性致癌物质苏丹红Ⅲ,表现出优异的可见光催化性能。结果表明:在可见光的作用下,15mg复合光催化剂在60min内降解了60％的苏丹红Ⅲ,并且在200min内的降解率达到了80％,空穴和羟基自由基是可见光催化降解苏丹红Ⅲ的主要活性物种。

Abstract

The all-inorganic halogenated perovskite CsPbX₃ (X = I,Br,Cl) has attracted more and more attention in recent years and is widely used in solar cells and light-emitting diodes due to its excellent photoelectric properties.All-inorganic halogenated perovskites were used in the field of photocatalytic degradation of organic pollutants.The high-purity Au-CsPbBr₃@GO composite photocatalyst was synthesized by recrystallization at room temperature,which further reduced the preparation cost of the photocatalyst.Au-CsPbBr₃@GO was used to degrade the water-insoluble carcinogen sudan red Ⅲ,and exhibitd excellent visible light catalytic performance.The results shown that under the action of visible light,15mg of the photocatalyst degraded about 60% of sudan red Ⅲ in 60 minutes,and the degradation rate reached 80% in 200 minutes.The holes and hydroxyl radicals were the main active species of visible light catalytic degradation of sudan red Ⅲ.

关键词

全无机卤化钙钛矿 / 金 / 氧化石墨烯 / 苏丹红Ⅲ / 可见光催化

Key words

all inorganic halogenated perovskite / gold / graphene oxide / sudan red Ⅲ / visible light catalysis

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全无机卤化钙钛矿复合光催化剂的可见光催化性能研究[J]. 化工新型材料, 2020, 48(6): 283-287 DOI:

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