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Catalysts 2017, 7(5), 132; doi:10.3390/catal7050132

Transition Metal-Modified Zirconium Phosphate Electrocatalysts for the Oxygen Evolution Reaction

1
Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA
2
Department of Chemistry, University of Puerto Rico-Río Piedras Campus, P.O. Box 70377, San Juan, PR 00936-8377, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Monica Pica
Received: 1 March 2017 / Revised: 18 April 2017 / Accepted: 20 April 2017 / Published: 1 May 2017
(This article belongs to the Special Issue Zirconium Phosphate Catalysts)
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Abstract

Zirconium phosphate (ZrP), an inorganic layered nanomaterial, is currently being investigated as a catalyst support for transition metal-based electrocatalysts for the oxygen evolution reaction (OER). Two metal-modified ZrP catalyst systems were synthesized: metal-intercalated ZrP and metal-adsorbed ZrP, each involving Fe(II), Fe(III), Co(II), and Ni(II) cations. Fourier transform infrared spectroscopy, X-ray powder diffraction, thermogravimetric analysis, and X-ray photoelectron spectroscopy were used to characterize the composite materials and confirm the incorporation of the metal cations either between the layers or on the surface of ZrP. Both types of metal-modified systems were examined for their catalytic activity for the OER in 0.1 M KOH solution. All metal-modified ZrP systems were active for the OER. Trends in activity are discussed as a function of the molar ratio in relation to the two types of catalyst systems, resulting in overpotentials for metal-adsorbed ZrP catalysts that were less than, or equal to, their metal-intercalated counterparts. View Full-Text
Keywords: zirconium phosphate; intercalation; ion exchange; catalyst support; oxygen evolution reaction; electrocatalysis; water oxidation zirconium phosphate; intercalation; ion exchange; catalyst support; oxygen evolution reaction; electrocatalysis; water oxidation
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Sanchez, J.; Ramos-Garcés, M.V.; Narkeviciute, I.; Colón, J.L.; Jaramillo, T.F. Transition Metal-Modified Zirconium Phosphate Electrocatalysts for the Oxygen Evolution Reaction. Catalysts 2017, 7, 132.

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