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Open Access Nano Express

Self-organized vanadium and nitrogen co-doped titania nanotube arrays with enhanced photocatalytic reduction of CO2 into CH4

Dandan Lu, Min Zhang*, Zhihua Zhang, Qiuye Li, Xiaodong Wang and Jianjun Yang*

Author Affiliations

Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, People's Republic of China

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Nanoscale Research Letters 2014, 9:272  doi:10.1186/1556-276X-9-272

Published: 29 May 2014

Abstract

Self-organized V-N co-doped TiO2 nanotube arrays (TNAs) with various doping amount were synthesized by anodizing in association with hydrothermal treatment. Impacts of V-N co-doping on the morphologies, phase structures, and photoelectrochemical properties of the TNAs films were thoroughly investigated. The co-doped TiO2 photocatalysts show remarkably enhanced photocatalytic activity for the CO2 photoreduction to methane under ultraviolet illumination. The mechanism of the enhanced photocatalytic activity is discussed in detail.

Keywords:
TiO2; Photocatalytic; CO2; Nanotube; CH4