化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (2) : 135-139. DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.031

科学研究

二氧化钛/锑掺杂二氧化锡/还原氧化石墨烯复合材料的制备及其光阴极保护性能研究

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Preparation of TiO₂/Sb-SnO₂/RGO composite and their photocathode protection property

Wang Peijun¹, Zuo Shixiang^1,2, Yan Xiangyu¹, Liu Wenjie¹, Li Xiazhang¹, Yao Chao¹

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Received		Published
2019-11-23		2021-02-20
Issue Date	Revised Date
2021-03-03	2019-11-23

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摘要

通过原位生长制备了锑掺杂二氧化锡/还原氧化石墨烯(Sb-SnO₂/RGO)复合材料,再通过水热法生长TiO₂制备了TiO₂/Sb-SnO₂/RGO复合材料。采用X射线衍射、扫描电镜、紫外-可见光、荧光光谱和光电化学等技术对材料的晶体结构、形貌、光吸收特性和电子复合情况进行了表征。结果表明:TiO₂与Sb-SnO₂形成了异质结构,扩大了复合材料的光响应范围,RGO的引入增强了复合材料在可见光区的响应,并提高了电子迁移速率。与TiO₂相比,TiO₂/Sb-SnO₂/RGO复合材料具有更佳的光阴极保护性能。

Abstract

Firstly,Sb-doped SnO₂/graphene (Sb-SnO₂/RGO) composites were prepared by in-situ growth,and then TiO₂/Sb-SnO₂/RGO composites were prepared by hydrothermal growth of TiO₂.The crystal structure,morphology,light absorption properties and electronic recombination of the materials were characterized byX-ray diffraction (XRD),scanningelectron microscopy (SEM),ultraviolet-visible (UV-Vis-DRS),photoluminescence (PL) and photoelectrochemistry.The results shown that TiO₂ formed a heterojunction with Sb-SnO₂,which expanded the photoresponse range of the composites.The introduction of RGO enhanced the response of the composites in the visible region and increased the electron migration rate.Compared with TiO₂,TiO₂/Sb-SnO₂/RGO had better photocathode protection properties.

关键词

锑掺杂二氧化锡 / 石墨烯 / 异质结构 / 光阴极保护

Key words

Sb-SnO₂ / graphene / heterostructure / photocathode protection

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二氧化钛/锑掺杂二氧化锡/还原氧化石墨烯复合材料的制备及其光阴极保护性能研究[J]. 化工新型材料, 2021, 49(2): 135-139 DOI:10.19817/j.cnki.issn 1006-3536.2021.02.031

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