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Copper reduced defective TiO 2 nanoparticles with enhanced visible light photocatalytic activity
Author(s) -
Ning Dongdong,
Wei Hehe,
Ou Gang,
Zhang Ruoyu,
Wu Hui
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15808
Subject(s) - photocatalysis , visible spectrum , materials science , nanoparticle , copper , annealing (glass) , nanotechnology , chemical engineering , degradation (telecommunications) , optoelectronics , catalysis , metallurgy , chemistry , telecommunications , biochemistry , computer science , engineering
Defective TiO 2 attracted increasing attention due to its high photocatalytic activities. Herein, we report a facile and efficient method to fabricate gray defective TiO 2 by vacuum annealing raw TiO 2 materials with copper powders. The treated TiO 2 nanoparticles exhibit significantly enhanced visible‐light‐photocatalytic performance with photo‐degradation rate increased to 400% as that of pristine commercial P25 under visible light. The performance enhancements can be attributed to the disordered structure, optimized optical and electronic properties of defective TiO 2 . In addition, this facile Cu reduction method provides an effective way to generate defective sites in other metal oxides for various potential applications.