title: Improvement of visible light photocatalytic acetaldehyde decomposition of bismuth vanadate/silica nanocomposites by cocatalyst loading.
abstract: Photocatalytic activity of bismuth vanadate (BiVO(4)) for acetaldehyde decomposition under visible light irradiation was improved by inclusion of a nanocomposition of silica as an adsorbent material and loading of platinum (Pt) or trivalent iron ion (Fe(3+)) as reduction cocatalysts. Addition of silica enhanced photocatalytic activity due to improvement of adsorption ability, but total decomposition of acetaldehyde was not observed within 24h of visible light irradiation. For further improvement of photocatalytic activity, BiVO(4) with an optimized amount of silica composition were modified with Pt or Fe(3+). Photodeposition of Pt greatly increased photocatalytic activity, and acetaldehyde was totally decomposed within 24h of visible light irradiation.
authors.affiliation: Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan.
authors.forename: Naoya
authors.initials: N
authors.lastname: Murakami
authors.forename: Naohiro
authors.initials: N
authors.lastname: Takebe
authors.forename: Toshiki
authors.initials: T
authors.lastname: Tsubota
authors.forename: Teruhisa
authors.initials: T
authors.lastname: Ohno
mesh_terms: D000079:Acetaldehyde / Q000737:chemistry* / Q000528:radiation effects; D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D007501:Iron / Q000737:chemistry; D008027:Light; D008855:Microscopy, Electron, Scanning; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010782:Photolysis; D010984:Platinum / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D014638:Vanadates / Q000737:chemistry*
chemical_list: C091754:bismuth vanadium tetraoxide; D014638:Vanadates; D010984:Platinum; D012822:Silicon Dioxide; D007501:Iron; D000079:Acetaldehyde; D001729:Bismuth