title: Template-free synthesis of a CdSnO3·3H2O hollow-nanocuboid photocatalyst via a facile microwave hydrothermal method.
abstract: A CdSnO3·3H2O hollow-nanocuboid photocatalyst was successfully synthesized via a facile template-free microwave hydrothermal method for the first time. The as-prepared samples were characterized by x-ray diffraction, UV-vis diffuse reflectance spectroscopy, Brunauer-Emmett-Teller (BET) surface area analysis and x-ray photoelectron spectroscopy. Moreover, samples prepared under different reaction times were analyzed by transmission electron microscopy to investigate the formation process of the CdSnO3·3H2O hollow-nanocuboids. Based on this result, a possible mechanism for the formation process was proposed. The sample prepared at 160 °C for 2 h at pH 11 exhibited the best photocatalytic activity and stability for the degradation of gaseous benzene under UV irradiation (λ = 254 nm) as compared with the other samples. The conversion and mineralization rates of benzene were about 12.5% and 67%, respectively. The mineralization rate was twice as high as that of commercial TiO2 (Degussa Co.). Furthermore, the excellent stability for the benzene decomposition was attributed to the positive charge on the catalyst surface, which was analyzed both by electron spin resonance and Zeta-potentials.
authors.affiliation: State Key Laboratory Breeding Base of Photocatalysis, Research Institute of Photocatalysis, Fuzhou University, Fuzhou 350002, People's Republic of China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Liu
authors.forename: Shijing
authors.initials: S
authors.lastname: Liang
authors.forename: Weiming
authors.initials: W
authors.lastname: Wu
authors.forename: Rui
authors.initials: R
authors.lastname: Lin
authors.forename: Na
authors.initials: N
authors.lastname: Qing
authors.forename: Ruowen
authors.initials: R
authors.lastname: Liang
authors.forename: Ling
authors.initials: L
authors.lastname: Wu
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification*; D001554:Benzene / Q000302:isolation & purification*; D019187:Cadmium Compounds / Q000737:chemistry*; D002384:Catalysis; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods; D010087:Oxides / Q000737:chemistry*; D010782:Photolysis; D018036:Selenium Compounds / Q000737:chemistry*
chemical_list: D000393:Air Pollutants; D019187:Cadmium Compounds; D010087:Oxides; D018036:Selenium Compounds; C058667:cadmium selenide; D001554:Benzene