Visible Light Absorption of Titanium Dioxide Through Cerium Synchronous Doping in Anatase The introduction of rare earth elements into TiO2 can effectively improve the electron-hole separation of TiO2 and prolong the visible light response of TiO2. Cerium (Ce) shows variable valence states Ce3+/
using incident photo-to-current efficiency test. Ce/TiOshows no obvious response in the visible region.
Moreover, the researchers unveiled that the electron-trapping centers formed by Ce doping into the TiOlattice improved the separation efficiency of photogenerated electrons and holes. The narrow bandgap of Ce-doped TiOshowed excellent visible light absorption and photocurrent response.
Reference: “Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures” by Mei-Hong Tong, Yan-Xin Chen, Tian-Ming Wang, Shi-Wei Lin, Gen Li, Qian-Qian Zhou, Rui Chen, Xia Jiang, Hong-Gang Liao and Can-Zhong Lu, 7 March 2023,
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