Self-assembled Bi2MoO6/TiO2 nanofiber heterojunction film with enhanced photocatalytic activities
Self-assembled Bi2MoO6/TiO2 nanofiber heterojunction film with enhanced photocatalytic activities
复制标题
自组装Bi2MoO6/TiO2纳米纤维异质结薄膜具有增强的光催化活性
DOI：
10.1016/j.apsusc.2016.06.167
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发表时间：
2017-01-01
影响因子：
6.7
通讯作者：
Fan, Jun
中科院分区：
文献类型：
--
作者：
Li, Hua;Zhang, Tianxi;Fan, Jun
采用乙二醇辅助水热法成功制备了TiO 2纳米薄膜（TiO 2 NFF），并在醇热条件下在TiO 2纳米薄膜表面自组装生长了片状Bi 2 MoO 6。研究表明，Bi 2 MoO 6薄膜具有良好的可见光散射特性，其散射光与Bi 2 MoO 6的吸收带重叠，提高了入射光的利用率。在可见光照射下（λ> 420 nm），制备的Bi 2 MoO 6/TiO 2复合材料对亚甲基蓝（MB）的光催化降解活性明显高于纯TiO 2光催化剂。光致发光（PL）和电化学测试证实，光催化活性的提高主要归因于两种半导体界面处可见光吸收和有效的电子-空穴分离的协同效应。(C)© 2016 Elsevier B. V.版权所有。
TiO2 nanofiber film (TiO2 NFF) was successfully fabricated by an ethylene glycol-assisted hydrothermal method, and then self-assembled flake-like Bi2MoO6 was grown on the surface of TiO2 nanofiber under alcohol thermal condition. The investigations indicate that the nanofiber structure of TiO2 films exhibits excellent visible light scattering property, the scattering light overlaps with the absorption band of Bi2MoO6, which can enhance the utility of incident light. The prepared Bi2MoO6/TiO2 composites show obviously enhanced photocatalytic activity for methylene blue (MB) degradation compared with pure TiO2 nanofiber under visible light irradiation (lambda > 420 nm). The enhanced photocatalytic activity is primarily attributed to the synergistic effect of visible light absorption and effective electron-hole separation at the interfaces of the two semiconductors, which is confirmed by photoluminescence (PL) and electrochemical tests. (C) 2016 Elsevier B.V. All rights reserved.