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Issue 4, 2017
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Molecular catalysis at polarized interfaces created by ferroelectric BaTiO3

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Abstract

The local environment at polarized solid–liquid interfaces provides a unique medium for chemical reactions that could be exploited to control the selectivity of non-faradaic reactions. Polarized interfaces are commonly prepared by applying a voltage to an electrode in an electrolyte solution, but it is challenging to achieve high surface charge densities while suppressing faradaic reactions. Ferroelectric materials have permanent surface charge densities that arise from the dipole moments of ferroelectric domains and can be used to create polarized solid–liquid interfaces without applying a voltage. We studied the effects of ferroelectric oxides on the selectivity of a Rh porphyrin-catalyzed carbene rearrangement. The addition of ferroelectric BaTiO3 nanoparticles to the reaction solution changed the product ratio in the same direction and by a similar magnitude as performing the reaction at an electrode–electrolyte interface polarized by a voltage. The results demonstrate that colloidal suspensions of BaTiO3 nanoparticles act as a dispersible polarized interface that can influence the selectivity of non-faradaic reactions.

Graphical abstract: Molecular catalysis at polarized interfaces created by ferroelectric BaTiO3

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Publication details

The article was received on 14 Nov 2016, accepted on 17 Jan 2017 and first published on 06 Feb 2017


Article type: Edge Article
DOI: 10.1039/C6SC05032H
Citation: Chem. Sci., 2017,8, 2790-2794
  • Open access: Creative Commons BY license
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    Molecular catalysis at polarized interfaces created by ferroelectric BaTiO3

    E. S. Beh, S. A. Basun, X. Feng, I. U. Idehenre, D. R. Evans and M. W. Kanan, Chem. Sci., 2017, 8, 2790
    DOI: 10.1039/C6SC05032H

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