TiO2 Nanotubes/Ag/MoS2 Meshy Photoelectrode with Excellent Photoelectrocatalytic Degradation Activity for Tetracycline Hydrochloride

被引：18
|
作者：
Li, Tingting [1 ,2 ]
Wang, Zhuhong [1 ,2 ]
Liu, Chaochao [1 ,2 ]
Tang, Chunmin [1 ,2 ]
Wang, Xinkai [1 ,2 ]
Ding, Gongsheng [1 ,2 ]
Ding, Yichun [1 ,2 ]
Yang, Lixia [1 ,2 ]
机构：
[1] Nanchang Hangkong Univ, Coll Environm & Chem Engn, Nanchang 330063, Jiangxi, Peoples R China
[2] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persisitent Pollutants Contr, Nanchang 330063, Jiangxi, Peoples R China
来源：
NANOMATERIALS | 2018年 / 8卷 / 09期
基金：
中国国家自然科学基金;
关键词：
TiO2; Nanotubes/Ag/MoS2; photoelectrode; photoelectrocatalytic degradation; tetracycline hydrochloride; EFFICIENT PHOTOCATALYTIC DEGRADATION; ADSORPTION; HETEROSTRUCTURES; MINERALIZATION; FABRICATION; REDUCTION;
D O I：
10.3390/nano8090666
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel type of TiO2 Nanotubes/Ag/MoS2 meshy photoelectrode was fabricated with highly oriented TiO2 nanotube arrays grown from a Ti mesh supporting Ag nanoparticles and three-dimensional MoS2 nanosheets. In this structure, Ag nanoparticles act as bridges to connect MoS2 and TiO2 and pathways for electron transfer, ensuring the abundant production of active electrons, which are the source of O-center dot(2)-. The TiO2 NTs/Ag/MoS2 mesh can be used as both photocatalyst and electrode, exhibiting enhanced photoelectrocatalytic efficiency in degrading tetracycline hydrochloride under visible light irradiation (lambda >= 420 nm). Compared to unmodified TiO2 NTs, the improved photoelectrocatalytic activity of the TiO2 NTs/Ag/MoS2 arise from the formation of Z-scheme heterojunctions, which facilitate the efficient separation of photogenerated electron-hole pairs through the Schottky barriers at the interfaces of TiO2 NTs-Ag and Ag-MoS2.
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页数：14
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