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Facile fabrication of H 2 BDC‐NH 2 modified anatase TiO 2 for effective photocatalytic degradation of azo dyes
Author(s) -
Liu Meiling,
Liu Yong,
Zhang Dou,
Pan Jun,
Liu Bowei,
Ouyang Sihui
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22740
Subject(s) - photocatalysis , anatase , materials science , hydrothermal circulation , visible spectrum , benzene , degradation (telecommunications) , absorption (acoustics) , nuclear chemistry , irradiation , photochemistry , chemical engineering , catalysis , chemistry , organic chemistry , optoelectronics , composite material , telecommunications , physics , computer science , nuclear physics , engineering
The 2‐amino benzene dicarboxylic acid (H 2 BDC‐NH 2 ) modified TiO 2 was prepared via hydrothermal method. The surface areas of unmodified and modified TiO 2 were 23.206 and 231.908 m 2 /g, and the according light absorption range changed from 400 nm to 540 nm. The modified TiO 2 exhibited 3 times higher visible‐light photocatalytic degradation efficiency for four types of azo dyes than unmodified TiO 2 and commercial P25. The ligand H 2 BDC of modified TiO 2 generated photoelectrons and holes under visible light irradiation, producing O H •andO 2 • −active sites for the dye degradation. Moreover, the modified TiO 2 showed excellent stability, which suggests the as‐prepared composite to be a promising photocatalyst.