Journal
ELECTROCHIMICA ACTA
Volume 186, Issue -, Pages 442-448Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.11.005
Keywords
N, Ti3+ codoped TiO2 nanotubes; Photoelectrode; Photocatalysis; Diclofenac
Categories
Funding
- National Natural Science Foundation of China [51508254, 51178138]
- Fundamental Research Funds for the Central Universities [lzujbky-2015-137]
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201509SIC]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [LK1522]
- National Creative Research Groups of China [51121062]
- State Key Laboratory of Urban Water Resources and Environment [QA201416]
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lake, Chinese Academy of Sciences
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In this study, we reported a facile strategy to fabricate N, Ti3+ codoped TiO2 nanotubes (N-Ti3+/TiO2 NTs) photoelectrode through one-step solution reduction process. The hydrazine hydrate treatment induced the simultaneous formation of Ti3+ species and N-doping in the lattice of TiO2 NTs. In addition, the N-Ti3+/TiO2 NTs photoelectrode exhibited intense visible light absorption ranging from 400 to 800 nm, high transient photoinduced current of 0.213 mA cm(-2), charge carriers concentration of 0.92 x 10(19) cm(-3), generation of hydroxyl radicals and PEC efficiency of 100% for the degradation of diclofenac solution within 4 h visible light irradiation. The enhanced-visible-light PEC performance was mainly attributed to the enhancement of visible light absorbance, narrow band gap energy and high separation efficiency of photoinduced charge carriers. This study provides a facile strategy to construct intense visible light active catalyst, which could be applied in the fields of wastewater/air purification, solar energy conversion and water splitting. (C) 2015 Elsevier Ltd. All rights reserved.
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