Synthesis, Characterization, and Photocatalytic Activity of TiO_2/SiO_2 Nanoparticles Loaded on Carbon Nanofiber Web

摘要

TiO_2/SiO_2 catalysts were loaded on carbon nanofibers(CNF) support by sol-gel preparation and followed by a dip-coating and heat treatment up to 900 °C in inert atmosphere. The photocatalytic activities of the catalysts (TiO_2/SiO_2)/CNF were tested by the photocatalytic degradation rate of methylene blue (MB) under UV irradiation. It was found that (TiO_2/SiO_2)/CNF showed a higher photocatalytic activity than TiO_2/CNF only. It was analyzed that SiO_2 contributed to an increase the photo catalytic activity by suppressing the phase transformation of the TiO_2 crystals from anatase to rutile on the heat treatment up to 900 °C.