title: A Plasmonic Colloidal Photocatalyst Composed of a Metal-Organic Framework Core and a Gold/Anatase Shell for Visible-Light-Driven Wastewater Purification from Antibiotics and Hydrogen Evolution.
abstract: Porous coordination polymers (PCP) or metal- organic frameworks (MOF) are promising materials for the generation of photocatalytically active composite materials. Here, a novel synthesis concept is reported, which permits the formation of PCP/MOF-core-Au/anatase-shell materials. These materials are photocatalysts for wastewater purification and hydrogen generation from water under visible-light illumination. MIL-101 (Cr) is utilized as the core material, which directs the size of the core-shell compound and ensures the overall stability. In addition, its excellent reversible large molecule sorption behavior allows the materials synthesis. The crystalline anatase shell is generated stepwise under mild conditions using titanium(IV) isopropoxide as a precursor. The high degree of control of the vapor phase deposition process permits the precise anatase shell formation. The generation of plasmonic active gold particles on the TiO2shell leads to an efficient material for visible-light-driven photocatalysis with a higher activity than gold-decorated P25 (Degussa).
authors.affiliation: Inorganic Chemistry II-Catalyst Design, University of Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany.
authors.forename: Dominic
authors.initials: D
authors.lastname: Tilgner
authors.affiliation: Inorganic Chemistry II-Catalyst Design, University of Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany.
authors.forename: Rhett
authors.initials: R
authors.lastname: Kempe
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification*; D003102:Colloids / Q000737:chemistry; D056831:Coordination Complexes / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry; D008027:Light; D000073396:Metal-Organic Frameworks / Q000737:chemistry*; D055668:Photochemical Processes; D014025:Titanium / Q000737:chemistry*; D062065:Wastewater / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D000900:Anti-Bacterial Agents; D003102:Colloids; D056831:Coordination Complexes; D006046:Gold; D006859:Hydrogen; D000073396:Metal-Organic Frameworks; D014025:Titanium; D062065:Wastewater; D014874:Water Pollutants, Chemical; C000589635:MIL-101; C009495:titanium dioxide
keywords: dye degradation; metal-organic frameworks; photocatalysis; plasmonic materials; water splitting