Fast and simple microwave synthesis of TiO2/Au nanoparticles for gas-phase photocatalytic hydrogen generation

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dc.contributor	Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques
dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor	Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.contributor.author	May Masnou, Anna
dc.contributor.author	Soler Turu, Lluís
dc.contributor.author	Torras, Miquel
dc.contributor.author	Sallés, Pol
dc.contributor.author	Llorca Piqué, Jordi
dc.contributor.author	Roig, Anna
dc.date	2018-04-12
dc.identifier.citation	May, A., Soler, L., Torras, M., Sallés, P., Llorca, J., Roig, A. Fast and simple microwave synthesis of TiO2/Au nanoparticles for gas-phase photocatalytic hydrogen generation. "Frontiers in chemistry (Lausanne)", 12 Abril 2018, vol. 6, núm. 110, p. 1-13.
dc.identifier.citation	2296-2646
dc.identifier.citation	10.3389/fchem.2018.00110
dc.identifier.citation	29707536
dc.identifier.uri	http://hdl.handle.net/2117/117400
dc.language.iso	eng
dc.relation	https://www.frontiersin.org/articles/10.3389/fchem.2018.00110/full
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Energies
dc.subject	Àrees temàtiques de la UPC::Energies::Recursos energètics renovables
dc.subject	Àrees temàtiques de la UPC::Enginyeria química::Biotecnologia
dc.subject	Nanoparticles
dc.subject	Hydrogen
dc.subject	Nanotitania
dc.subject	Gold nanoparticles
dc.subject	Microwave synthesis
dc.subject	Gas phase photocatalysis
dc.subject	Hydrogen production
dc.subject	Nanopartícules
dc.subject	Hidrogen
dc.title	Fast and simple microwave synthesis of TiO2/Au nanoparticles for gas-phase photocatalytic hydrogen generation
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	The fabrication of small anatase titanium dioxide (TiO2) nanoparticles (NPs) attached to larger anisotropic gold (Au) morphologies by a very fast and simple two-step microwave-assisted synthesis is presented. The TiO2/Au NPs are synthesized using polyvinylpyrrolidone (PVP) as reducing, capping and stabilizing agent through a polyol approach. To optimize the contact between the titania and the gold and facilitate electron transfer, the PVP is removed by calcination at mild temperatures. The nanocatalysts activity is then evaluated in the photocatalytic production of hydrogen from water/ethanol mixtures in gas-phase at ambient temperature. A maximum value of 5.3 mmol·g-1 cat·h-1 (7.4 mmol·g-1 TiO2 ·h-1) of hydrogen is recorded for the system with larger gold particles at an optimum calcination temperature of 450¿C. Herein we demonstrate that TiO2-based photocatalysts with high Au loading and large Au particle size (˜50 nm) NPs have photocatalytic activity.

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