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Articles by Wenhua Yan
Total Records ( 1 ) for Wenhua Yan
  Jinhuan Li , Xia Yang , Xiaodan Yu , Leilei Xu , Wanli Kang , Wenhua Yan , Hongfeng Gao , Zhonghe Liu and Yihang Guo
  Rare-earth oxide-doped titania nanocomposites (RE3+/TiO2, where RE=Eu3+, Pr3+, Gd3+, Nd3+, and Y3+) were prepared by a one-step sol–gel-solvothermal method. The products exhibited anatase phase structure, mesoporosity, and interesting surface compositions with three oxygen species and two titanium species. The products were used as the photocatalysts to degrade a partially hydrolysis polyacrylamide (HPAM) under UV-light irradiation, a very useful polymer in oil recovery. For comparison, Degussa P25 and as-prepared pure TiO2 were also tested under the same conditions. The enhanced photocatalytic activity was obtained on as-prepared Eu3+ (Gd3+, Pr3+)/TiO2 composites, and the reasons were explained. Finally, the degradation pathway of HPAM over the RE3+/TiO2 composite was put forward based on the intermediates produced during the photocatalysis procedure.
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