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; Jianjun Yang

doi:10.1186/1556-276X-9-272

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

Nanoscale Res Lett. 2014 May 29;9(1):272. doi: 10.1186/1556-276X-9-272. eCollection 2014.

Authors

Dandan Lu¹, Min Zhang¹, Zhihua Zhang¹, Qiuye Li¹, Xiaodong Wang¹, Jianjun Yang¹

Affiliation

¹ Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, People's Republic of China.

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: CH4; CO2; Nanotube; Photocatalytic; TiO2.