光催化
纳米颗粒
锐钛矿
热液循环
材料科学
X射线光电子能谱
微晶
无定形固体
兴奋剂
带隙
亚甲蓝
化学工程
核化学
纳米技术
化学
冶金
催化作用
结晶学
光电子学
有机化学
工程类
作者
Zhijie Li,Wenzhong Shen,Wen‐Sen He,Xiaotao Zu
标识
DOI:10.1016/j.jhazmat.2007.11.095
摘要
Anatase Fe-doped TiO2 nanoparticles with 10–15 nm particles sizes were directly prepared with amorphous TiO2 nanoparticles and Fe(NO3)3·9H2O by hydrothermal method. The TiO2 crystallite grain sizes decreased with the increase of Fe contents. When Fe contents increased, the diffuse reflectance spectra of Fe-doped TiO2 nanoparticles displayed a red shift in the band gap transition. And the absorbing band edge moved to visible range when the Fe contents were more than 2 mol%. XPS analysis showed that Fe3+ was not on the surface of TiO2 nanoparticles, but inserting into the matrix interior. As a result, the photoactivity degradation of MB on Fe-doped TiO2 nanoparticles decreased.
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