Synthesis and characterization of CdS/TiO2-montmorillonite nanocomposite with enhanced visible-light absorption

Sodium montmorillonite (mmt) was chosen as the carrier; a serial of cds/tio2-mmt nanocomposites with enhanced visible-light absorption ability was prepared by hydrothermal synthesis method combination with semiconductor compound modification method. the samples are characterized by x-ray diffraction (xrd),x-ray photoelectron spectroscopy (xps),and ultraviolet visible (uv-vis) spectroscopy; the results showed that tio2 and cds nanoparticles were loaded on the surface of montmorillonite uniformly. n 2 adsorption-desorption experiment showed that the specific surface area of tio2/montmorillonite nanocomposite made by this method can reach 200 m2/g and pore-size distribution was from 4 to 6 nm; uv-vis showed that the recombination of cds and tio2 enhanced visible-light absorption ability of samples of tio2/montmorillonite and visible-light absorption ability increase with the increased of the adsorption of cds. © 2014 feng-shan zhou et al.