Water splitting reaction on Ce0.15Zr0.85O2 driven by surface heterogeneity

Alfonsina Pappacena; Marta Boaro; Lidia Armelao; Jordi Llorca; Alessandro Trovarelli

doi:10.1039/C5CY01337B

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Water splitting reaction on Ce_0.15Zr_0.85O₂ driven by surface heterogeneity†

Alfonsina Pappacena,^a Marta Boaro,*^a Lidia Armelao,^b Jordi Llorca^c and Alessandro Trovarelli^a

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* Corresponding authors

^a Dipartimento di Chimica, Fisica e Ambiente, Università degli Studi di Udine, Via del Cotonificio 108, 33100 Udine, Italy
E-mail: marta.boaro@uniud.it

^b IENI-CNR and INSTM, Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy

^c Institut de Tècniques Energètiques and Centre for Research in Nanoengineering, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain

Abstract

Ce_0.15Zr_0.85O₂ was investigated in the two-step water splitting reaction. High-temperature treatment in N₂ induced compositional and structural heterogeneities which contributed to a six-fold increase of H₂ yield after the first cycle. Ceria surface enrichment and the formation of a ceria–zirconia oxynitride phase positively affected the reduction and oxidation steps.

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Article information

DOI: https://doi.org/10.1039/C5CY01337B
Article type: Communication
Submitted: 14 Aug 2015
Accepted: 01 Oct 2015
First published: 06 Oct 2015

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Catal. Sci. Technol., 2016,6, 399-403

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Water splitting reaction on Ce_0.15Zr_0.85O₂ driven by surface heterogeneity

A. Pappacena, M. Boaro, L. Armelao, J. Llorca and A. Trovarelli, Catal. Sci. Technol., 2016, 6, 399 DOI: 10.1039/C5CY01337B

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