Preparation and Photocatalytie Performance of La-TiO<,2>/ACFs Photocatalyst
Activated carbon fibers (ACFs) supported La-TiO<,2> nanocomposite photocatalyst was successfully prepared by sol-gel method. The surface morphology, microstructure and optic properties of the sample were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), BET surface area and UV-Vis diffuse reflectance spectroscopy (UV-Vis). The characteristic results confirmed that La-TiO<,2> powders were deposited on activated carbon fiber homogeneously, and the micrographic structure and surface properties of ACFs had not been damaged by the deposition process and calcination at high temperatures. Furthermore, anatase-form TiO<,2> was uniquely developed even as calcination temperatures reached 700℃. Experiments indicated that the La-TiO <,2>/ACFs photocatalyst calcined at 450℃ showed higher photocatalytic activity in photodegradation of phenol aqueous solution than La-TiO<,2> powder catalyst. The improvement may be explained in terms of synergetic effect on the stronger adsorption ability of ACFs and efficient photocatalytic performance of La-TiO<,2>.
photocatalysis activated carbon fibers sol-gel method La-TiO<,2> phenol
XIA Huili ZHUANG Huisheng
College of Environmental Science & Engineering, Donghua University, Shanghai, 201620, P. R. China
国际会议
上海
英文
843-845
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）