Enhanced photocatalytic performance of TiO2 nanotube based heterojunction photocatalyst via the coupling of graphene and FTO

被引：40

作者：

Niu, Xiaoyou ^{[1
]}

Yu, Jianyuan ^{[1
,3
]}

Wang, Likun ^{[1
]}

Fu, Chen ^{[1
]}

Wang, Jixia ^{[1
]}

Wang, Li ^{[1
]}

Zhao, Hongli ^{[1
,2
]}

Yang, Jingkai ^{[4
]}

机构：

[1] Yanshan Univ, Coll Mat Sci & Engn, Qinhuangdao 066004, Peoples R China

[2] State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[3] Tangshan Univ, Dept Environm & Chem Engn, Tangshan 063000, Peoples R China

[4] Yanshan Univ, Natl Def Sci & Technol, Qinhuangdao 066004, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2017年 / 413卷

基金：

中国国家自然科学基金;

关键词：

TiO2; nanotube; Graphene; FTO; Heterojunction; Charge separation; Photocatalytic performance; STEP SOLVOTHERMAL SYNTHESIS; STATE Z-SCHEME; CO-DOPED TIO2; OXIDE; NANOCOMPOSITES; COMPOSITES; PHOTOLUMINESCENCE; NANOCRYSTALS; DEGRADATION; REACTIVITY;

D O I：

10.1016/j.apsusc.2017.03.220

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The TiO2 nanotube (TONT) based heterojunction photocatalyst was developed via the coupling of reduced graphene oxide (rGO) and SnO2:F film (FTO). Based on the characterization of Raman analysis, XRD, SEM, TEM, XPS and ESR, the crystal phase, morphology, heterojunction interfacial interaction and the photoinduced electron chemical environment of the samples are studied. In the photodegradation of methylene blue (MB) solution under UV irradiation, the rGO-TONT/FTO heterojunction photocatalyst exhibits the improved photocatalytic reaction rate, 3 times greater than that of pure TONT. The enhanced photo catalytic mechanism was discussed by PL. The effectively separate charge in heterojunction structure of rGO-TONT/FTO is responsible for the enhanced photocatalytic activity. Wherein, the abundant oxygen vacancies at TiO2 surface and the chemically bonded interface in rGO-TONT heterojunction also contributes to the interfacial electron transfer. Besides, the introduction of rGO enhanced its optical absorption capacity. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：7 / 15

页数：9

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