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

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

Volume: 11 Issue: 4

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

Affiliation:

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

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.

Cite this article as:

Zhao Yujie, Li Huayang, Bala Hari, Chen Jingkuo, Zhang Bowen, Fu Xinglin and Fu Wuyou, Synthesis of Visible Light Responsive N Doped TiO₂ Photocatalyst and its Enhanced Photocatalytic Activity, Current Nanoscience 2015; 11 (4) . https://dx.doi.org/10.2174/1573413711666150130194703