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Hybridizing TiO 2 with Nitrogen‐Doped Carbon: A New Route to A Highly Visible Light‐Active Photocatalyst
Author(s) -
Chen Xiaofang,
Xie Zongli,
Liang Yan,
Wei Jing,
Zhu Yonggang,
Huo Yuning,
Zhang Xiwang,
Wang Huanting
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700017
Subject(s) - photocatalysis , materials science , carbonization , rhodamine b , calcination , graphitic carbon nitride , methyl orange , visible spectrum , carbon fibers , carbon nitride , doping , catalysis , inorganic chemistry , photochemistry , chemistry , scanning electron microscope , organic chemistry , composite material , optoelectronics , composite number
TiO 2 hybridized with nitrogen‐doped carbon (N‐doped C/TiO 2 ) was prepared as a photocatalyst with improved visible‐light catalytic activity for the first time. It was found that N‐doped carbon was formed by etching and partial decomposition of as‐formed graphitic carbon nitride on the surface of TiO 2 under calcination at 500 °C in open air, which avoided direct doping of nitrogen into TiO 2 structure. N‐doped carbon on the surface of TiO 2 led to an enhanced light absorption in the range of 400 to 550 nm. The resulting N‐doped C/TiO 2 exhibited about 2 times higher activity than the graphitic carbon nitride/TiO 2 prepared by direct carbonization in argon atmosphere. Compared with the commercial TiO 2 (Degussa, P25), N‐doped C/TiO 2 showed a higher reaction rate in the degradation of various pollutants such as rhodamine B, phenol and methyl orange (MO) under simulated solar light irradiation.