스킵 네비게이션


Materials LeaderKOREAN CARBON SOCIETY

학회지검색

학회지검색

Synthesis and characterization of carbon doped TiO2 photo-catalysts supported on stainless steel mesh by sol-gel method
관리자2017-05-22조회 2627
This study synthesized pure anatase carbon doped TiO2 photocatalysts supported on a stain-less steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl4. The influence of the pyrolysis temperature and holding time on the morpho-logical characteristics, particle sizes and surface area of the prepared catalyst was investi-gated. The prepared catalysts were characterized by several analytical methods: high resolu-tion scanning electron microscopy (HRSEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and X-ray photoelectron spectroscopy (XPS). The XRD patterns showed that the supported TiO2 nanocrystals are typically anatase, polycrystalline and body-centered tetragonal in structure. The EDS and XPS results comple-mented one another and confirmed the presence of carbon species in or on the TiO2 layer, and the XPS data suggested the substitution of titanium in TiO2 by carbon. Instead of using calcination, PAN pyrolysis was used to control the carbon content, and the mesoporosity was tailored by the applied temperature. The supported TiO2 nanocrystals prepared by pyrolysis at 300, 350, and 400ºC for 3 h on a stainless steel mesh were actual supported carbon doped TiO2 nanocrystals. Thus, PAN/DMF/TiCl4 offers a facile, robust sol-gel related route for preparing supported carbon doped TiO2 nanocomposites.