摘要
The N/TiO2 was prepared by wet hydrolyzation method. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity was 2.47 times of TiO2. The products were characterized by XRD, SPS, EFISPS and XPS, respectively. The results of XRD showed that the N could restrain the crystallization transformation of TiO2 from anatase to rutile. The N/TiO2 was still n-type semiconductor, and the absorbance wavelength appeared red-shifted by N-doping. The band gap of N/TiO2 was decreased to 2.7 eV. The amount of doped-N is about 0.94at.%. The binding energy of N1s are 396.62 eV (Ti-N bonds, β-N) and 400.87 eV (N-N bonds, γ-N2), respectively, and the photocatalytic activity of N/TiO2 under visible light is related to the β-N. The N atoms replace the O of the TiO2 and form the Ti-N bonding.
The N/TiO2 was prepared by wet hydrolyzation method. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity was 2.47 times of TiO2. The products were characterized by XRD, SPS, EFISPS and XPS, respectively. The results of XRD showed that the N could restrain the crystallization transformation of TiO2 from anatase to rutile. The N/TiO2 was still n-type semiconductor, and the absorbance wavelength appeared red-shifted by N-doping. The band gap of N/TiO2 was decreased to 2.7 eV. The amount of doped-N is about 0.94at.%. The binding energy of Nls are 396.62 eV （Ti-N bonds,β-N） and 400.87 eV （N-N bonds, y-N2）, respectively, and the photocatalytic activity of N/TiO2 under visible light is related to the β-N. The N atoms replace the O of the TiO2 and form the Ti-N bonding.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2006年第7期1349-1353,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.50378027)
关键词
湿法水解
光催化
可见光
氮掺杂
wet hydrolyzation method
photocatalytic
visible-light
N-doped
