Lanthanide oxide-doped titanium dioxide: Effective photocatalysts for the degradation of organic pollutants
摘要：
A series of lanthanide oxide-doped titanium dioxide photocatalysts Ln 2 O 3 /TiO 2 (Ln 3+ = Eu 3+ , Pr 3+ , Yb 3+ ) were prepared. The photocatalysts reveal a substantially enhanced activity for the degradation of organic pollutants, as compared to undoped TiO 2 . The photodegradation processes of p-nitrobenzoic acid, (1), p-chlorophenoxyacetic acid, (2), aniline, (3), salicylic acid, (4), and trans-cinnamic acid, (5), with the different photocatalysts was examined. The photodegradation of (1)–(5) is significantly faster with Ln 2 O 3 /TiO 2 photocatalysts and leads to complete mineralization of the organic compounds. The high activity of the Ln 2 O 3 /TiO 2 photocatalysts is attributed to the enhanced association of the functionalized organic pollutants to lanthanide-ion surface sites.
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DOI：
10.1023/A:1004780401030
被引量：
年份：
1999
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