Characterization and photocatalytic performance of CdS-TiO2/MWCNTs
CdS-TiO2/MWCNTs结构表征及其光催化性能

A cadmium sulfide (CdS)-titanium dioxide (TiO2) nanocomposite supported on multi-walled carbon nanotubes (MWCNTs) was prepared by a sol-gel method. The structures of the photocatalyst CdS-TiO2/MWCNTs were characterized by transmission electron microscopy (TEM), brunaure-emmett-teller (BET), X-ray diffraction (XRD) and UV-visible absorption spectrum (UV-vis) techniques. And the photocatalytic performance was investigated for toluene decomposition. The results showed that the CdS-TiO2 nanocomposites were highly dispersed on the sidewall of MWCNTs, with a greater BET surface area and an extended light adsorption threshold and intensity. The presence of CdS and MWCNTs played a great role in improving photocatalytic properties of TiO2. Under the irradiation UV light at the wavelength of 254 nm, the removal efficiency of toluene decomposition on CdS-TiO2/MWCNTs was up to 55.3%.