Issue 28, 2020
From the journal:

Nanoscale

Multi-stoichiometric quasi-two-dimensional WnO3n−1 tungsten oxides

Luka Pirker, ORCID logo *a   Bojana Višić, ORCID logo ab   Srečo D. Škapin, ORCID logo ac   Goran Dražić, ORCID logo acd   Janez Kovača  and  Maja Remškar ORCID logo a  

* Corresponding authors

a Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
E-mail: luka.pirker@ijs.si

b Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia

c Jožef Stefan International Postgraduate School, Jamova cesta 39, 1000 Ljubljana, Slovenia

d National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia

Abstract

Quasi-two-dimensional tungsten oxide structures, which nucleate by epitaxial growth on W19O55 nanowires (NW) and grow as thin platelets, were identified. Both the nanowires and the platelets accommodate oxygen deficiency by the formation of crystallographic shear planes. Stoichiometric phases, W18O53 (WO2.944), W17O50 (WO2.941), W16O47 (WO2.938), W15O44 (WO2.933), W14O41 (WO2.929), W10O29 (WO2.9), and W9O26 (WO2.889), syntactically grow inside a single platelet. These layered crystals show a new kind of polycrystallinity, where crystallographic shear planes accommodate oxygen deficiency and at the same time stabilize this multi-stoichiometric structure.

Graphical abstract: Multi-stoichiometric quasi-two-dimensional WnO3n−1 tungsten oxides

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Article information

DOI
https://doi.org/10.1039/D0NR02014A
Article type
Paper
Submitted
11 Mar 2020
Accepted
20 Jun 2020
First published
22 Jun 2020

Nanoscale, 2020,12, 15102-15114

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Multi-stoichiometric quasi-two-dimensional WnO3n−1 tungsten oxides

L. Pirker, B. Višić, S. D. Škapin, G. Dražić, J. Kovač and M. Remškar, Nanoscale, 2020, 12, 15102 DOI: 10.1039/D0NR02014A

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