title: ZnO Rods with Exposed {100} Facets Grown via a Self-Catalyzed Vapor-Solid Mechanism and Their Photocatalytic and Gas Sensing Properties.
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.
authors.affiliation: SIX Research Centre, Brno University of Technology , 10 Technická, 60190 Brno, Czech Republic.
authors.forename: Stella
authors.initials: S
authors.lastname: Vallejos
authors.affiliation: Institute of Physics of Material, Academy of Sciences of Czech Republic , 22 Zizkova, 61662 Brno, Czech Republic.
authors.forename: Naděžda
authors.initials: N
authors.lastname: Pizúrová
authors.affiliation: Instituto de Microelectrónica de Barcelona, Consejo Superior de Investigaciones Científica , Campus UAB, 08193 Bellaterra-Barcelona, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Gràcia
authors.affiliation: Department of Chemistry, University College London , 20 Gordon Street, London WC1H0AJ, U.K.
authors.forename: Carlos
authors.initials: C
authors.lastname: Sotelo-Vazquez
authors.affiliation: Institute of Physical Engineering, Central European Institute of Technology, Brno University of Technology , 2896/2 Technická, 61669 Brno, Czech Republic.
authors.forename: Jan
authors.initials: J
authors.lastname: Čechal
authors.affiliation: Department of Chemistry, University College London , 20 Gordon Street, London WC1H0AJ, U.K.
authors.forename: Chris
authors.initials: C
authors.lastname: Blackman
authors.affiliation: Department of Chemistry, University College London , 20 Gordon Street, London WC1H0AJ, U.K.
authors.forename: Ivan
authors.initials: I
authors.lastname: Parkin
authors.affiliation: Instituto de Microelectrónica de Barcelona, Consejo Superior de Investigaciones Científica , Campus UAB, 08193 Bellaterra-Barcelona, Spain.
authors.forename: Carles
authors.initials: C
authors.lastname: Cané
keywords: AACVD; ZnO; gas sensing; photocatalysis; rods