Urchin-like ZnO nanorod arrays for gas sensing applications

Davide Barreca; Daniela Bekermann; Elisabetta Comini; Anjana Devi; Roland A. Fischer; Alberto Gasparotto; Chiara Maccato; Cinzia Sada; Giorgio Sberveglieri; Eugenio Tondello

doi:10.1039/C0CE00139B

Urchin-like ZnOnanorod arrays for gas sensing applications†

Davide Barreca,*^a Daniela Bekermann,^b Elisabetta Comini,^c Anjana Devi,^b Roland A. Fischer,^b Alberto Gasparotto,^d Chiara Maccato,^d Cinzia Sada,^e Giorgio Sberveglieri^c and Eugenio Tondello^d

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^a CNR-ISTM and INSTM, Department of Chemistry, Padova University, Padova, Italy
E-mail: davide.barreca@unipd.it
Fax: +39 049 8275161
Tel: +39 049 8275170

^b Inorganic Materials Chemistry Group, Lehrstuhl für Anorganische Chemie II, Ruhr-University Bochum, Bochum, Germany

^c CNR-IDASC, SENSOR Lab, Department of Chemistry and Physics, Brescia University, Brescia, Italy

^d Department of Chemistry, Padova University and INSTM, Via Marzolo, 1, Padova, Italy

^e Department of Physics and CNISM, Padova University, Padova, Italy

Abstract

ZnO nanorod assemblies were grown by plasma-enhanced chemical vapor deposition on polycrystalline Al₂O₃ at 200–300 °C, resulting in urchin-like 1-D ZnO NR arrays with a strong c-axis orientation. Their outstanding gas sensing responses and very low detection limits highlight the potential of the present systems in the production of high efficiency chemical sensors for a variety of applications.

CrystEngComm

Urchin-like ZnOnanorod arrays for gas sensing applications†

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Urchin-like ZnO nanorod arrays for gas sensing applications

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