Distinct water activation on polar/non-polar facets of ZnO nanoparticles

He Zhang; Junming Sun; Changjun Liu; Yong Wang

doi:10.1016/j.jcat.2015.08.016

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Distinct water activation on polar/non-polar facets of ZnO nanoparticles

Journal article

Open access

Peer reviewed

Distinct water activation on polar/non-polar facets of ZnO nanoparticles

He Zhang, Junming Sun, Changjun Liu and Yong Wang

Journal of catalysis, Vol.331(C), pp.57-62

11/2015

DOI: https://doi.org/10.1016/j.jcat.2015.08.016

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https://hdl.handle.net/2376/112545

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Abstract

ZnO

Ethanol

Water dissociation

Ketonization

Facet

[Display omitted] •Water activation/dissociation was compared on the ZnO polar and non-polar facets.•Formation of oxygen vacancy on ZnO non-polar facet is much facile than that on ZnO polar facet.•Facile water activation is confirmed by the bio-ethanol to acetone reaction in which water dissociation is involved. ZnO nanoparticles with differing dominant facets were prepared and characterized by a complimentary of techniques such as X-ray diffraction, electron microscopy, temperature programmed desorption of H2O, and Fourier transform infrared spectroscopy analysis of adsorbed D2O. For the first time, water interaction/activation is compared on ZnO polar and non-polar facets. We report that non-polar facets exhibit high activity in water activation, which favors reactions such as ketonization and steam reforming in which dissociated water is involved. The distinct water dissociation on ZnO non-polar facets could be related to its facile formation of oxygen vacancies under realistic reaction conditions.

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Title: Distinct water activation on polar/non-polar facets of ZnO nanoparticles
Creators: He Zhang - The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA
Junming Sun - The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA
Changjun Liu - The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA
Yong Wang - The Gene & Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA 99164, USA
Publication Details: Journal of catalysis, Vol.331(C), pp.57-62
Academic Unit: Chemical Engineering and Bioengineering, School of
Publisher: Elsevier Inc
Identifiers: 99900547854201842
Language: English
Resource Type: Journal article