Fibrous TiO2 prepared by chemical vapor deposition using activated carbon fibers as template via adsorption, hydrolysis and calcinations |
| |
Authors: | Hui-na YANG Li-fen LIU Feng-lin YANG Jimmy C. YU |
| |
Affiliation: | [1]School of Chemical Engineering, Dalian University of Technology Dalian 116023, China [2]School of Environmental and Biological Science and Technology; Dalian University of Technology, Dalian 116023, China [3]Department of Chemistry the Chinese University of Hong Kong, Hong Kong, China |
| |
Abstract: | TiO2 fibers were prepared via alternatively introducing water vapor and Ti precursor carried by Ne to an APCVD (chemical vapor deposition under atmospheric pressure) reactor at <200 ℃. Activated carbon fibers (ACFs) were used as templates for deposition and later removed by calcinations. The obtained catalysts were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brtmauer, Emmett and Teller (BET) and X-ray diffraction (XRD) analysisThe pores within TiO2 fibers included micro-range and meso-range, e.g., 7 nm, and the specific surface areas for TiO2 fibers were 141 m2/g and 148 m2/g for samples deposited at 100 ℃ and 200 ℃ (using ACF1700 as template), respectively. The deposition temperature significantly influenced TiO2 morphology. The special advantages of this technique for preparing porous nano-material include no consumption of organic solvent in the process and easy control of deposition conditions and speeds. |
| |
Keywords: | Chemical vapor deposition (CVD) Porous material Activated carbon fiber (ACF) |
本文献已被 维普 万方数据 等数据库收录! |
|