Current Nanoscience


Synthesis of Visible Light Responsive N Doped TiO2 Photocatalyst and its Enhanced Photocatalytic Activity

Author(s): Yujie Zhao, Huayang Li, Hari Bala, Jingkuo Chen, Bowen Zhang, Xinglin Fu, Wuyou Fu.

Graphical Abstract:


The N doped TiO2 (N-TiO2) photocatalyst was prepared by a sol-gel method using ammonium nitrate (NH4NO3) as solid substrates and doping source. The thermal dissociation of NH4NO3 during heat treatment process of dried gel can introduce N element to TiO2 promoting the crystal transformation and adjusting the band structure. Meanwhile, the N-TiO2 samples have large specific surface area and well mesoporous structure. The doped N element narrow the band gap of TiO2 and its light absorption edge has been broadened to visible region. The photocatalytic degradation measurement exhibit that the N-TiO2 sample show high photocatalytic activities in decolorisation of RhB under visible light irradiation. The kinetic calculations reveal that photocatalytic reaction rate constant for N-TiO2 is approximately 3 times higher than that for pure TiO2.

Keywords: Degradation, N doped, photocatalyst, TiO2, visible light.

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Article Details

Year: 2015
Page: [447 - 452]
Pages: 6
DOI: 10.2174/1573413711666150130194703
Price: $58