成果简介:Mesoporous TiO2 coated SBA-15 (MT@S) nanocomposites were fabricated through supercritical CO2 deposition aided by liquid-crystal template. MT uniformly deposited onto silica with titania incorporated in SBA-15 channels, showed smaller crystallite size, higher hydroxyl content and surface area than nonporous TiO2 coated SBA-15 (NT@S) obtained by a similar route without template. With TiO2 loading ratio of 15wt% and calcination temperature of 400 °C, 15%MT@S-400 showed the enhanced degradation efficiency for azo dyes (methylene blue, methyl orange, and rhodamine B) and phenol in comparsion with 15%NT@S-400, due to those improved textural and physicochemical properties. Meanwhile, the reused MT@S also showed high photoactivity. Additionally, the effects of MT content and calcination temperature have been examined as operational parameters. Photocatalytic reactions followed pseudo-first-order kinetics and are discussed in terms of the Langmuir–Hinshelwood model.
论文引用方式:Chen Liu, Xiao Lin, Youji Li, Peng Xu, Ming Li, Feitai Chen. Enhanced photocatalytic performance of mesoporous TiO2 coated SBA-15 nanocomposites fabricated through a novel approach: supercritical deposition aided by liquid-crystal template.Materials Research Bulletin, 75, 2016, 25-34
论文链接:http://www.sciencedirect.com/science/article/pii/S0025540815301872