title: Mesoporous carbon nitride-tungsten oxide composites for enhanced photocatalytic hydrogen evolution.
abstract: Composites of mesoporous polymeric carbon nitride and tungsten(VI) oxide show very high photocatalytic activity for the evolution of hydrogen from water under visible light and in the presence of sacrificial electron donors. Already addition of very small amounts of WO3 yields up to a twofold increase in the efficiency when compared to bulk carbon nitrides and their composites and more notably even to the best reported mesoporous carbon nitride-based photocatalytic materials. The higher activity can be attributed to the high surface area and synergetic effect of the carbon nitrides and the WO3 resulting in improved charge separation through a photocatalytic solid-state Z-scheme mechanism.
authors: Department of Chemistry, Functional Materials, Technische Universität Berlin, Hardenbergstraße 40, 10623 Berlin (Germany), Fax: (+49) 30-314-29271. kamalakannan@mailbox.tu-berlin.de.
authors: Kamalakannan
authors: K
authors: Kailasam
authors: Anna
authors: A
authors: Fischer
authors: Guigang
authors: G
authors: Zhang
authors: Jinshui
authors: J
authors: Zhang
authors: Michael
authors: M
authors: Schwarze
authors: Marc
authors: M
authors: Schröder
authors: Xinchen
authors: X
authors: Wang
authors: Reinhard
authors: R
authors: Schomäcker
authors: Arne
authors: A
authors: Thomas
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D006859:Hydrogen / Q000737:chemistry*; D009570:Nitriles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D016062:Porosity; D014414:Tungsten / Q000737:chemistry*
chemical_list: D009570:Nitriles; D010087:Oxides; C011206:cyanogen; D006859:Hydrogen; C511604:tungsten oxide; D014414:Tungsten
keywords: graphitic carbon nitrides; hydrogen evolution; mesoporosity; tungsten oxide; z-scheme