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Effect of Fluoride on the Photocatalytic Activity of Hollow TiO 2 Microspheres prepared by Fluoride‐Mediated Self‐Transformation
Author(s) -
Liu M.,
Lv K. L.,
Wang G. H.,
Wang Z. Y.,
Zhao Y. X.,
Deng Y. R.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000144
Subject(s) - photocatalysis , fluoride , crystallization , degradation (telecommunications) , microsphere , materials science , acetone , chemical engineering , inorganic chemistry , chemistry , catalysis , nuclear chemistry , organic chemistry , telecommunications , computer science , engineering
Photocatalytic activity of TiO 2 is known to be enhanced by surface fluorination due to the enhanced production of free • OH radicals in solution. Recently, hollow TiO 2 microspheres with enhanced photocatalytic activity was developed through fluoride‐mediated self‐transformation, in which the high photocatalytic activity in degradation of acetone was attributed to the fluoride‐induced enhanced crystallization of TiO 2 without taking into account the effect of surface fluorination. This paper aims to re‐evaluate the effects of fluoride‐induced crystallization and surface fluorination on the photocatalytic activity of hollow TiO 2 microspheres prepared by fluoride‐induced self‐transformation. Degradation of Brilliant Red X3B (X3B), an organic dye, was performed under different conditions to evaluate photocatalytic activity.