摘要：AbstractA carbon-containing titanium dioxide (C-TiO2) photocatalyst was prepared via ethanol impregnation using commercial Ishihara ST-01 TiO2powder as the precursor. Scanning Electron Microscopy and X-ray Diffractometry results indicated that raw ST-01 and C-TiO2had similarly globular shapes and presented in anatase phase. N2adsorption isotherms suggested that carbon impregnated on the TiO2surface could slightly reduce the total surface area and pore volume. X-ray Photoelectron Spectroscopy and Fourier Transform Infrared Spectroscopy examinations further supported the formation of various C-functional groups on the C-TiO2surface. Removal of low-concentration Hg0by raw and C-TiO2was enhanced with increasing O2concentration. Furthermore, because the existence of C-functional groups on the C-TiO2surface, the photoinduced hydrophilicity resulted from light irradiation appears to decrease, causing less adsorption competition from H2O for Hg0adsorption at higher temperature. The reemission of adsorbed Hg species could thus be significantly decreased by carbon impregnation.
