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Long Persistent Phosphor CdSiO 3 :Gd 3+ ,Bi 3+ and Potential Photocatalytic Application of CdSiO 3 :Gd 3+ ,Bi 3+ @TiO 2 in Dark
Author(s) -
Feng Pengfei,
Wei Yudong,
Wang Yanan,
Zhang Jiachi,
Li Huihui,
Ci Zhipeng
Publication year - 2016
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.14142
Subject(s) - photocatalysis , luminescence , phosphor , persistent luminescence , methylene blue , decomposition , materials science , analytical chemistry (journal) , absorption (acoustics) , ultraviolet , irradiation , photochemistry , nuclear chemistry , chemistry , optoelectronics , thermoluminescence , physics , environmental chemistry , catalysis , composite material , biochemistry , organic chemistry , nuclear physics
To support photocatalytic decomposition of TiO 2 in low‐transparent wastewaters or in the dark, we develop a novel ultraviolet emitting long persistent phosphor CdSiO 3 :Gd 3+ ,Bi 3+ , which the persistent luminescence can last for more than 6 h (0.32 mcd/m 2 ). Approximately 68.7% of the spectral areas of the optimal sample can well match the absorption band of TiO 2 . The long persistent luminescent mechanism is discussed in details. The investigations of decomposition of methylene blue by CdSiO 3 :Gd 3+ ,Bi 3+ @TiO 2 composite reveals that the long persistent luminescence of CdSiO 3 :Gd 3+ ,Bi 3+ can not only support the photocatalytic activity of TiO 2 in the dark but also significantly increases the photocatalytic efficiency under ultraviolet irradiation. Thus, the CdSiO 3 :Gd 3+ ,Bi 3+ @TiO 2 composite is potentially used as functional photocatalyst to treat the organic pollutants in low‐transparent wastewater or in the dark.