Title
Highly sensitive and selective hydrogen single-nanowire nanosensor
Abbreviated Journal Title
Sens. Actuator B-Chem.
Keywords
Cd-doped; ZnO nanowire; Nanosensor; Gas response; Selective; Hydrogen; DOPED ZNO NANOWIRES; ROOM-TEMPERATURE; ELECTROCHEMICAL DEPOSITION; NANORODS; ARRAYS; SENSOR; ELECTRODEPOSITION; NANOCRYSTALS; FABRICATION; HUMIDITY; Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
Abstract
Metal oxides such as ZnO have been used as hydrogen sensors for a number of years. Through doping. the gas response of zinc oxide to hydrogen has been improved. Cadmium-doped ZnO nanowires (NWs) with high aspect ratio have been grown by electrodeposition. Single doped ZnO NWs have been isolated and contacted to form a nanodevice. Such nanosystem demonstrates an enhanced gas response and selectivity for the detection of hydrogen at room temperature compared to previously reported H-2 nanosensors based on pure single-ZnO NWs or multiple NWs. A dependence of the gas response of a single Cd-ZnO nanowire on the NW diameter and Cd content was observed. It is shown that cadmium-doping in single-crystal zinc oxide NWs can be used to optimize their response to gases without the requirement of external heaters. The sensing mechanisms responsible for such improved response to hydrogen are discussed. (C) 2012 Elsevier B.V. All rights reserved.
Journal Title
Sensors and Actuators B-Chemical
Volume
173
Publication Date
1-1-2012
Document Type
Article
Language
English
First Page
772
Last Page
780
WOS Identifier
ISSN
0925-4005
Recommended Citation
"Highly sensitive and selective hydrogen single-nanowire nanosensor" (2012). Faculty Bibliography 2010s. 2975.
https://stars.library.ucf.edu/facultybib2010/2975
Comments
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