TY - JOUR
T1 - 1D ZnO nano-assemblies by Plasma-CVD as chemical sensors for flammable and toxic gases
AU - Barreca, Davide
AU - Bekermann, Daniela
AU - Comini, Elisabetta
AU - Devi, Anjana
AU - Fischer, Roland A.
AU - Gasparotto, Alberto
AU - MacCato, Chiara
AU - Sberveglieri, Giorgio
AU - Tondello, Eugenio
N1 - Funding Information:
D. Bekermann received her M.Sc. degree in chemistry (functional materials) at the Ruhr-University of Bochum (Germany) in 2008. Since then she is doing her PhD studies at the Ruhr-University of Bochum and at the University of Padua (Department of Chemistry/ISTM-CNR, Italy), which is supported by a fellowship from the SFB 558. Her main research interest is devoted to the synthesis of ZnO-based nanostructures by MOCVD and PE-CVD for optical, gas sensing and photocatalytic applications.
Funding Information:
This work was financially supported by PRIN-COFIN 2008, CNR-INSTM PROMO and programs CARIPARO 2006 “Multi-layer optical devices based on inorganic and hybrid materials by innovative synthetic strategies” and PRAT 2008 “Nano-organization of functional molecular architectures on inorganic surfaces for eco-sustainable processes”. The Ruhr-University Bochum Rektorat (support for young female researchers), RD-IFSC, RD-Plasma and NanoSci-ERA, a consortium of national funding organizations within the European Research Area, provided further funding. Mr. A. Ravazzolo (CNR, Padova, Italy) is acknowledged for technical assistance.
PY - 2010/8/6
Y1 - 2010/8/6
N2 - In this work, 1D ZnO nano-assemblies were prepared on Al2O 3 substrates by plasma enhanced-chemical vapor deposition (PE-CVD), and characterized in their morphology and chemical composition by field emission-scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDXS) and X-ray photoelectron spectroscopy (XPS). For the first time, the sensing performances of PE-CVD ZnO nanosystems were tested in the detection of toxic/combustible gases (CO, H2 and CH4), revealing very good responses already at moderate working temperatures. In particular, carbon monoxide and hydrogen detection was possible already at 100 °C, whereas methane sensing required a minimum temperature of 200 °C. The performances of the present ZnO nanosystems, that make them attractive candidates for technological applications, are presented and discussed in terms of their unique and controllable morphological organization.
AB - In this work, 1D ZnO nano-assemblies were prepared on Al2O 3 substrates by plasma enhanced-chemical vapor deposition (PE-CVD), and characterized in their morphology and chemical composition by field emission-scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDXS) and X-ray photoelectron spectroscopy (XPS). For the first time, the sensing performances of PE-CVD ZnO nanosystems were tested in the detection of toxic/combustible gases (CO, H2 and CH4), revealing very good responses already at moderate working temperatures. In particular, carbon monoxide and hydrogen detection was possible already at 100 °C, whereas methane sensing required a minimum temperature of 200 °C. The performances of the present ZnO nanosystems, that make them attractive candidates for technological applications, are presented and discussed in terms of their unique and controllable morphological organization.
KW - 1D nano-assemblies
KW - Gas sensors
KW - Plasma enhanced-chemical vapor deposition
KW - ZnO
UR - http://www.scopus.com/inward/record.url?scp=77955473806&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2010.06.048
DO - 10.1016/j.snb.2010.06.048
M3 - Article
AN - SCOPUS:77955473806
SN - 0925-4005
VL - 149
SP - 1
EP - 7
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
IS - 1
ER -