caa a22 4500 606173927 CHVBK 20210128100735.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s11244-014-0347-8 doi (NATIONALLICENCE)springer-10.1007/s11244-014-0347-8 Hydrogen Photoproduction from Ethanol-Water Mixtures Over Au-Cu Alloy Nanoparticles Supported on TiO2 [Elektronische Daten] [Eduard Bonmatí, Albert Casanovas, Inma Angurell, Jordi Llorca] Au/TiO2, Au0.75Cu0.25/TiO2, Au0.5Cu0.5/TiO2 and Au0.25Cu0.75/TiO2 photocatalysts prepared from pre-formed Au and Au-Cu alloy nanoparticles of controlled composition and size were loaded over ceramic honeycombs (2mgcm−2) and tested in an optical fiber photoreactor illuminated with UV LEDs (2.6mWcm−2) to continuously produce hydrogen from water and ethanol mixtures in gas phase at W/F=4gminL−1 and 298K (where W is the weight of the catalyst and F is the flow rate). The photocatalytic honeycombs were characterized by high resolution transmission electron microscopy, high-angle annular dark-field imaging, energy dispersive X-ray, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy. The yield of hydrogen generation was Au0.75Cu0.25/TiO2>Au0.5Cu0.5/TiO2~Au/TiO2>Au0.25Cu0.75/TiO2≫bare TiO2, thus demonstrating that the addition of small quantities of copper to conventional TiO2-supported gold photocatalysts promotes the photocatalyic activity, likely by providing effective charge transfer between Au and Cu in the alloy nanoparticles. Springer Science+Business Media New York, 2014 Photocatalysis nationallicence Hydrogen nationallicence Ethanol nationallicence Gold nationallicence Copper nationallicence Titania nationallicence Bonmatí Eduard Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut Casanovas Albert Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut Angurell Inma Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain aut Llorca Jordi Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/2-3(2015-03-01), 77-84 1022-5528 58:2-3<77 2015 58 11244 https://doi.org/10.1007/s11244-014-0347-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-014-0347-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bonmatí Eduard Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Casanovas Albert Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Angurell Inma Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Llorca Jordi Institut de Tècniques Energètiques and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya, Av. Diagonal 647, Ed. ETSEIB, 08028, Barcelona, Spain aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/2-3(2015-03-01), 77-84 1022-5528 58:2-3<77 2015 58 11244