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American Chemical Society, ACS Applied Materials and Interfaces, 48(8), p. 33335-33342, 2016

DOI: 10.1021/acsami.6b12992

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ZnO Rods with Exposed {100} Facets Grown via a Self-Catalyzed Vapor-Solid Mechanism and Their Photocatalytic and Gas Sensing Properties

Journal article published in 2016 by Stella Vallejos ORCID, Naděžda Pizúrová, Isabel Gràcia, Carlos Sotelo-Vazquez, Jan Čechal, Chris Blackman, Ivan Parkin, Carles Cané
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present a new method for vapor deposition of columnar ZnO structures in the form of rods on various substrates without the need for substrate modification with catalyst seed particles and at relatively low temperatures compared to other vapor deposition methods. These structures are used for the photodegradation of stearic acid (C18H36O2) and the photoactivated detection of gases such as carbon monoxide (CO), ethanol (C2H6O), toluene (C7H8), and nitrogen dioxide (NO2) at room temperature, showing improved selectivity compared to tests performed in themoactivated mode.