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Chemically synthesized one-dimensional zinc oxide nanorods for ethanol sensing

Title data

Ahmad, Muhammad Z. ; Sadek, Abu Z. ; Latham, Kay ; Kita, Jaroslaw ; Moos, Ralf ; Wlodarski, Wojtek:
Chemically synthesized one-dimensional zinc oxide nanorods for ethanol sensing.
In: Sensors and Actuators B: Chemical. Vol. 187 (2013) . - pp. 295-300.
ISSN 0925-4005
DOI: 10.1016/j.snb.2012.11.042

Official URL: Volltext

Abstract in another language

One-dimensional (1D), single-phase (002) crystalline zinc oxide (ZnO) nanorod (NR) based conductometric sensors have been developed and investigated toward ethanol (C2H5OH) vapor. The ZnO NRs were chemically deposited onto conductometric transducer of alumina substrates employing a simple hydrothermal method. To facilitate the nucleation of ZnO NRs for oriented growth from the substrate, a seed layer of ZnO nanoparticles was pre-deposited employing filtered cathodic vacuum arc (FCVA) deposition technique onto the substrate containing pre-patterned interdigital electrodes (IDTs). Micro-characterization studies revealed that the NRs have a single crystal 1D structure with an average diameter of 30–50 nm. The developed sensors were exposed toward ethanol of different concentrations at temperature up to 330 °C. An optimum sensor operational temperature was found between 280 and 310 °C. At this temperature range, high sensitivity, fast response and fast recovery in conjunction with a stable baseline occur. The long-term stability test of the developed sensors confirmed that they are highly stable with only less than 3% variation of the dynamic performances (baseline resistance, sensitivity, response and recovery time).

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 12 Jan 2015 12:50
Last Modified: 14 Apr 2016 07:57
URI: https://eref.uni-bayreuth.de/id/eprint/5470