Photocatalytic Activity Enhancement of Anatase TiO2 by Using TiO
Photocatalytic Activity Enhancement of Anatase TiO2 by Using TiO
复制标题
DOI：
10.1155/2014/298619
复制
发表时间：
2014-03
影响因子：
--
通讯作者：
Zhenrui Chen;W. Zhong;Z. Liang;Weiqian Li;Guannan He;Yinzhen Wang;Wei Li;Yuandong Xie;Qinyu He
中科院分区：
文献类型：
--
作者：
Zhenrui Chen;W. Zhong;Z. Liang;Weiqian Li;Guannan He;Yinzhen Wang;Wei Li;Yuandong Xie;Qinyu He
We employed high-energy ball-milling technique to fabricate TiO/ heterogeneous nanostructures. XRD proved the existence of TiO/ heterogeneous structures. SEM and HRTEM investigation evidenced that the mean particle size and mean grain size of the as-prepared samples are 23 nm and 13 nm, respectively. UV-Vis spectra exhibited that TiO has enhanced the visible light absorption of and has changed the of . UPS examination indicated that the electron work function (EWF) of TiO is higher than that of . Photocatalytic degradation experiments revealed that an appropriate TiO content can enhance the photocatalytic activity of pure anatase . The best photocatalytic activity of TiO/ heterogeneous nanostructures is even better than that of Au-deposited by keeping high degradation efficiency of 93%. The internal electrical field producing in TiO/ heterogeneous nanostructures was considered to be dominantly responsible for the enhanced photocatalytic activity. Therefore, the substitution of TiO with noble metal in will be widely used in the future due to its low cost. This study also provides a clear direction of enhancing photocatalytic activity of : incorporating a guest compound into with an appropriate content if the compound has much higher electron work function than that of .
