title: Comparison of catalytic activities for photocatalytic and sonocatalytic degradation of methylene blue in present of anatase TiO2-CNT catalysts.
abstract: Anatase TiO(2)-CNT catalysts with high specific surface areas were prepared by depositing TiO(2) particles on the surface of carbon nanotubes (CNTs) using a modified sol-gel technique. These catalysts prepared with different amounts of CNTs were characterized by nitrogen adsorption, Fourier Transform infrared (FT-IR) spectroscopy, scanning electron microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), Raman spectroscopy, energy dispersive X-ray (EDX) and ultraviolet-visible (UV-Vis) spectroscopy. The catalytic activity of the anatase TiO(2)-CNT catalysts was assessed by examining the degradation of methylene blue (MB) from model aqueous solutions as a probe reaction under visible light and ultrasonic irradiation. The synergistic effect of the greater surface area and catalytic activities of the composite catalysts was examined in terms of the strong adsorption ability and interphase interaction by comparing the different amounts and roles of CNTs in the catalysts.
authors.affiliation: Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, Hyojadong, Namgu, Pohang, Republic of Korea.
authors.forename: Kan
authors.initials: K
authors.lastname: Zhang
authors.forename: Feng Jun
authors.initials: FJ
authors.lastname: Zhang
authors.forename: Ming Liang
authors.initials: ML
authors.lastname: Chen
authors.forename: Won Chun
authors.initials: WC
authors.lastname: Oh
mesh_terms: D000327:Adsorption; D002384:Catalysis; D006358:Hot Temperature; D008751:Methylene Blue / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D010782:Photolysis; D016062:Porosity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D037742:Nanotubes, Carbon; C009495:titanium dioxide; D014025:Titanium; D008751:Methylene Blue