title: Ag-doped ZnO nanorods coated metal wire meshes as hierarchical photocatalysts with high visible-light driven photoactivity and photostability.
abstract: Ag-doped ZnO nanorods were grown on stainless-steel wire meshes to fabricate the hierarchical photocatalysts with excellent visible light driven activity and anti-photocorrosion property. Effects of Ag doping and the surface structure on the surface chemistry, surface wetting properties, absorption band shift, photoelectrochemical response, and photocatalytic decolorization properties of the hierarchical photocatalysts, together with the stability of photocatalytic activity for recycled photocatalysts were investigated. Ag doping leads to red-shift in the absorption band and increased visible light absorption. Nanorods coated wire meshes hierarchical structure not only increases the surface area of photocatalysts but also makes the surface hydrophilic. The photocatalytic activity enhancement and reduced photocorrosion can be achieved because of increased surface area, enhanced hydrophilicity, and the interaction between the metal wire/ZnO and Ag/ZnO heterostructure interface which can improve the charge separation of photogenerated charge carriers.
authors.affiliation: Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC.
authors.forename: Mu-Hsiang
authors.initials: MH
authors.lastname: Hsu
authors.affiliation: Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan, ROC. Electronic address: changcj@fcu.edu.tw.
authors.forename: Chi-Jung
authors.initials: CJ
authors.lastname: Chang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry; D008027:Light; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects; D055668:Photochemical Processes; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D012834:Silver; C100258:methyl orange; D015034:Zinc Oxide
keywords: Anti-photocorrosion; Hierarchical; Photocatalyst; Stainless-steel wire mesh; Visible-light; ZnO