Redox tuning the Weakley-type polyoxometalate archetype for the oxygen evolution reaction

Martin-Sabi, M., Soriano-López, J., Winter, R. S., Chen, J.-J., Vilà-Nadal, L. , Long, D.-L. , Galán-Mascarós, J. R. and Cronin, L. (2018) Redox tuning the Weakley-type polyoxometalate archetype for the oxygen evolution reaction. Nature Catalysis, 1(3), pp. 208-213. (doi:10.1038/s41929-018-0037-1) (PMID:30079397) (PMCID:PMC6075698)

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Abstract

Water oxidation is a key reaction for the conversion of solar energy into chemical fuels, but effective water-oxidation catalysts are often based on rare and costly precious metals such as Pt, Ir or Ru. Developing strategies based on earth-abundant metals is important to explore critical aspects of this reaction, and to see whether different and more efficient applications are possible for energy systems. Herein, we present an approach to tuning a redox-active electrocatalyst based on the doping of molybdenum into the tungsten framework of [Co4(H2O)2(PW9O34)2]10–, known as the Weakley sandwich. The Mo-doped framework was confirmed by X-ray crystallography, electrospray ionization mass spectrometry and inductively coupled plasma optical emission spectrometry studies. The doping of molybdenum into the robust Weakley sandwich framework leads to the oxidation of water at a low onset potential, and with no catalyst degradation, whereby the overpotential of the oxygen evolution reaction is lowered by 188 mV compared with the pure tungsten framework.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Long, Dr De Liang and Vila-Nadal, Dr Laia and Winter, Mr Ross and Cronin, Professor Leroy and Chen, Dr Jiajia
Authors: Martin-Sabi, M., Soriano-López, J., Winter, R. S., Chen, J.-J., Vilà-Nadal, L., Long, D.-L., Galán-Mascarós, J. R., and Cronin, L.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Nature Catalysis
Publisher:Nature Publishing Group
ISSN:2520-1158
Published Online:08 March 2018

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
503291Molecular-Metal-Oxide-nanoelectronicS (M-MOS): Achieving the Molecular LimitLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/H024107/1CHEM - CHEMISTRY
577391Programmable Molecular Metal Oxides (PMMOs) - From Fundamentals to ApplicationLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/J015156/1CHEM - CHEMISTRY
605821The Multi-Corder: Poly-Sensor TechnologyDavid CummingEngineering and Physical Sciences Research Council (EPSRC)EP/K021966/1ENG - ENGINEERING ELECTRONICS & NANO ENG
633821A Digital DNA Nano Writer (DNA NanoFab)Leroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/L015668/1CHEM - CHEMISTRY
646611Programmable 'Digital' Synthesis for Discovery and Scale-up of Molecules, Clusters and NanomaterialsLeroy CroninEngineering and Physical Sciences Research Council (EPSRC)EP/L023652/1CHEM - CHEMISTRY
685741SMARTPOM: Artificial-Intelligence Driven Discovery and Synthesis of Polyoxometalate ClustersLeroy CroninEuropean Research Council (ERC)670467CHEM - CHEMISTRY