Facile Preparation and Visible-light Photocatalysis Enhancement of N-Doped β-TiO_2 Nanobelts  

作　　者：JI Tian-hao LIU Yang DONG Li-ya HAN Peng SUN Jia-yue 

机构地区：[1]College of Science,Beijing Technology and Business University,Beijing 100048,P.R.China

出　　处：《Chemical Research in Chinese Universities》2012年第4期721-726,共6页高等学校化学研究（英文版）

基　　金：Supported by the National Basic Research Program of China(No.2006CB932605);the National Natural Science Foundation of China(No.20876002);the Fund of Beijing Technology and Business University for the Talent,China

摘　　要：A facile preparation of nitrogen-doped β-TiO2（N-doped β-TiO2） nanobelts and their visible-light photocatalytic activity were reported.The preparation of N-doped β-TiO2 nanobelts consisted of cation-exchange between layered sodium titanate nanobelts and NH 4 ＋ in aqueous solution at room temperature and subsequent calcination in air.Such a calcination treatment is beneficial to the formation of monoclinic N-doped β-TiO2 nanobelts.Various measurement results indicate that not only were the nitrogen atoms doped into the lattice of β-TiO2 nanobelts resulting in a strong visible-light absorption,but also a large number of defects were caused by them in the lattice,increasing the stability of β-TiO2.The photocatalysis enhancement of N-doped β-TiO2 nanobelts for the photodegradation of Rhodamine B was demonstrated.A facile preparation of nitrogen-doped β-TiO2（N-doped β-TiO2） nanobelts and their visible-light photocatalytic activity were reported.The preparation of N-doped β-TiO2 nanobelts consisted of cation-exchange between layered sodium titanate nanobelts and NH 4 ＋ in aqueous solution at room temperature and subsequent calcination in air.Such a calcination treatment is beneficial to the formation of monoclinic N-doped β-TiO2 nanobelts.Various measurement results indicate that not only were the nitrogen atoms doped into the lattice of β-TiO2 nanobelts resulting in a strong visible-light absorption,but also a large number of defects were caused by them in the lattice,increasing the stability of β-TiO2.The photocatalysis enhancement of N-doped β-TiO2 nanobelts for the photodegradation of Rhodamine B was demonstrated.

关 键 词：N-DOPING Titanium dioxide nanobelt β-Titanium dioxide Titanium dioxide（B） PHOTOCATALYSIS 

分 类 号：O643.36[理学—物理化学] TQ134.11[理学—化学]