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Characterization of TiO 2 Loaded on Activated Carbon Fibers and Its Photocatalytic Reactivity
Author(s) -
Jia BingYu,
Duan LiYan,
Ma ChuanLi,
Wang ChunMing
Publication year - 2007
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200790103
Subject(s) - photocatalysis , calcination , anatase , x ray photoelectron spectroscopy , chemistry , adsorption , activated carbon , aqueous solution , chemical engineering , absorption (acoustics) , methylene blue , nuclear chemistry , materials science , catalysis , composite material , organic chemistry , engineering
Abstract In this paper, TiO 2 loaded on activated carbon fibers (ACF) was prepared by a coating treatment, followed by calcination at different temperatures in air atmosphere. The photocatalyst developed was characterized by SEM, XRD, XPS and UV‐Vis adsorption spectroscopy. It was observed from SEM images that TiO 2 loaded on ACF was in the form of small clusters with nanometer size. As confirmed by XRD and XPS determinations, the crystalline pattern of immobilized TiO 2 was still anatase‐form after calcination, and the micrographic structure and surface properties of ACF have not been damaged by the deposition process and calcination at different temperatures. Photocatalytic degradation of methylene blue (MB) in aqueous solution was investigated using TiO 2 /ACF as photocatalyst. The comparison of photolysis, absorption and photocatalysis was carried out. The results indicated that the photocatalysis process of combined photocatalyst showed much higher degradation rate than that of photolysis and absorption processes. In addition, the possibility of cyclic usage of the photocatalyst was also confirmed.