Insights into the Performance of CoxNi1-xTiO3 Solid Solutions as Photocatalysts for Sun-Driven Water Oxidation
Murcia López, Sebastián (Institut de Recerca en Energia de Catalunya)
Moschogiannaki, Marilena (University of Crete)
Binas, Vassilios (University of Crete)
Andreu, Teresa (Institut de Recerca en Energia de Catalunya)
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Jacas Biendicho, Jordi (Institut de Recerca en Energia de Catalunya)
Kiriakidis, George (University of Crete)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)

Date:	2017
Abstract:	CoNiTiO systems evaluated as photo- and electrocatalytic materials for oxygen evolution reaction (OER) from water have been studied. These materials have shown promising properties for this half-reaction both under (unbiased) visible-light photocatalytic approach in the presence of an electron scavenger and as electrocatalysts in dark conditions in basic media. In both situations, CoNiTiO exhibits the best performance and is proved to display high faradaic efficiency. A synergetic effect between Co and Ni is established, improving the physicochemical properties such as surface area and pore size distribution, besides affecting the donor density and the charge carrier separation. At higher Ni content, the materials exhibit behavior more similar to that of NiTiO, which is a less suitable material for OER than CoTiO.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 Ministerio de Economía y Competitividad MAT2014-59961-C2-2-R Ministerio de Economía y Competitividad SEV-2013-0295 Ministerio de Economía y Competitividad FJCI-2014-19745
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Oxygen evolution reaction ; Solar hydrogen ; Solid solutions ; Water splitting ; Photocatalysis
Published in:	ACS applied materials & interfaces, Vol. 9, Issue 46 (November 2017) , p. 40290-40297, ISSN 1944-8252

DOI: 10.1021/acsami.7b12994

Postprint 32 p, 2.3 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles