title: Improved photocatalytic performance of ZnO nanograss decorated pore-array films by surface texture modification and silver nanoparticle deposition.
abstract: Immobilized photocatalyst was prepared by the growth of ZnO nanograss on the ZnO pore-array substrate. The surface morphology, optical and photocatalytic properties of the photocatalysts were studied. Nanograss decorated ZnO pore-array films exhibited improved performance on the photocatalytic degradation of methyl orange (MO) in aqueous solution under UV radiation. The photocatalytic activity of pore-array films can be tuned by changing the surface nanostructure of the porous photocatalyst. The enhanced photocatalytic activity of the nanostructured pore-array photocatalyst can be attributed to increased active surface area, improved diffusion of dye molecules among the nanostructured catalyst, and enhanced light absorption through the light-trapping effect. Besides, the degradation of MO using Ag/ZnO composite pore-array catalysts with different sizes and densities of the Ag particles on the surface of ZnO nanostructure was investigated.
authors: Department of Chemical Engineering, Feng Chia University, Seatwen, Taichung, Taiwan, ROC.
authors: Shao-Tsu
authors: ST
authors: Hung
authors: Chi-Jung
authors: CJ
authors: Chang
authors: Mu-Hsiang
authors: MH
authors: Hsu
mesh_terms: D002384:Catalysis; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles; D010777:Photochemistry; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D012834:Silver; D015034:Zinc Oxide