化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (11) : 111-114.

新材料与新技术

TiO₂-GO复合光催化剂的制备及其对硝基酚类污染物的降解性能

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Synthesis of TiO₂-GO composite photocatalyst and its degradation performance for nitrophenol

Gou Minglei¹, Duan Xinrui¹, Yuan Yunxia², Niu Qingshan¹

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文章历史 +

Received		Published
2018-06-21		2019-11-20
Issue Date	Revised Date
2019-12-04	2018-06-21

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摘要

采用水热法制备了二氧化钛-氧化石墨烯(TiO₂-GO)复合光催化剂,采用X射线多晶粉末衍射和扫描电镜对其性质进行了表征,并以对硝基酚为目标污染物,考察了复合光催化剂在可见光和紫外光照射下的降解性能。结果表明:GO掺杂既能提高TiO₂颗粒的分散度,增加其比表面积,又能降低光生电子与空穴的复合几率,提高光催化活性。另外,GO掺杂还将TiO₂的光响应范围拓展至了可见光区域。

Abstract

TiO₂-GO composite photocatalyst was synthesized by hydrothermal method,and XRD and SEM were employed to analyze its properties.Taking p-nitrophenol as a target pollutant,the degradation performances of TiO₂-GO were investigated under visible and ultraviolet light,respectively.The results showed that introduction of GO increased the dispersion and specific surface area of TiO₂,as well as reducing the photogenerated electron-hole pair recombination rate,thus improving the photocatalytic activity.In addition,the spectral response of TiO₂ was also enlarged to visible range under doping with GO.

关键词

二氧化钛 / 氧化石墨烯 / 光催化 / 对硝基酚

Key words

titanium dioxide / graphene oxide / photocatalysis / nitrophenol

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TiO₂-GO复合光催化剂的制备及其对硝基酚类污染物的降解性能[J]. 化工新型材料, 2019, 47(11): 111-114 DOI:

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