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

摘要

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