Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7716280 | International Journal of Hydrogen Energy | 2015 | 8 Pages |
Abstract
Photocatalysis is a promising solar energy conversion technique. Here we report a simple but efficient way to fabricate black Ni-doped TiO2 photoanodes for photoelectrochemical water-splitting. The black Ni-doped TiO2 photoanodes were fabricated through anodization for nanotube growth and one-step tin metal reduction in argon atmosphere. X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectra were used to characterize the black Ni-doped TiO2 photoanodes. The black Ni-doped TiO2 photoanodes presented large amounts of Ti3+ and oxygen vacancy, which ensured high capability of absorbing visible and infrared light. The black Ni-doped TiO2 photoanodes exhibited an excellent and stable photocatalytic activity compared to undoped TiO2 photoanode. The maximum photoconversion efficiency of the black Ni-doped TiO2 photoanodes was 2.95% at â0.56Â V vs Ag/AgCl, which was almost ten times as high as that of the undoped TiO2 photoanode.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Qiang Liu, Dongyan Ding, Congqin Ning, Xuewu Wang,