title: Low temperature fabrication & photocatalytical activity of carbon fiber-supported TiO2 with different phase compositions.
abstract: Crystalline TiO2 nanoparticles with different phase compositions were fabricated on carbon fibers. The fabrication is achieved at low temperature. The process includes the treatment of Ti(OH)4 with hydrogen peroxide in the presence of carbon fibers. Neither additional acids nor bases, or additives are used during the process. Carbon fibers prior to and after TiO2 loading are characterized by FE-SEM, XRD, and UV-vis absorption spectroscopy. The photocatalytic activity was assessed via photocatalytic degradation of methyl orange solution, and found to be phase composition-dependent & pH dependent. Carbon fibers loaded with mixed-phase TiO2 led to the best photocatalytic performance. HRTEM reveals the anatase/rutile heterojunction which helps explain the high efficiency of photocatalysis. They have been demonstrated to be re-usable in the continuous photocatalytic degradation process.
authors: Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
authors: Zhifeng
authors: Z
authors: Wang
authors: Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui, Tobata, Kitakyushu, Fukuoka 804-8550, Japan.
authors: Kohji
authors: K
authors: Yoshinaga
authors: Department of Chemistry, Clark Atlanta University, Atlanta, GA 30314, USA. Electronic address: xbu@cau.edu.
authors: Xiu R
authors: XR
authors: Bu
authors: Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China. Electronic address: lxyzhangm@yzu.edu.cn.
authors: Ming
authors: M
authors: Zhang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D003080:Cold Temperature; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010777:Photochemistry; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001391:Azo Compounds; C009495:titanium dioxide; C100258:methyl orange; D014025:Titanium
keywords: Anatase–rutile heterojunction; Carbon fibers; Nanoparticles; Photocatalysis; Titanium dioxide