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Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties

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Main Authors: Muhammad Z., Ahmad, Jin, Chang, Muhammad Syarhabil, Ahmad, Dr., Waclawik, Eric R., Assoc. Prof. Dr., Wlodarski, W., Prof.
Other Authors: zamharir@gmail.com
Format: Article
Language:English
Published: Elsevier B.V. 2013
Subjects:
Conductometric
Ethanol
Gas sensing
Nanopyramids
Nitrogen dioxide
Solvothermal
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/23503
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spelling my.unimap-235032013-02-14T01:30:28Z Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties Muhammad Z., Ahmad Jin, Chang Muhammad Syarhabil, Ahmad, Dr. Waclawik, Eric R., Assoc. Prof. Dr. Wlodarski, W., Prof. zamharir@gmail.com syarhabil@unimap.edu.my e.waclawik@qut.edu.au Conductometric Ethanol Gas sensing Nanopyramids Nitrogen dioxide Solvothermal Link to publisher's homepage at http://www.elsevier.com/ Zinc oxide (ZnO) nanopyramids were synthesized by a one-pot route in a non-aqueous and surfactant-free environment. The synthesized metal oxide was characterized using SEM, XRD, and TEM to investigate the surface morphology and crystallographic phase of the nanostructures. It was observed that the ZnO nanopyramids were of uniform size and symmetrical, with a hexagonal base and height of ∼100 nm. Gas sensing characterization of the ZnO nanopyramids when deposited as thin-film onto conductometric transducers were performed towards NOx and C2H5OH vapor of different concentrations over a temperature range of 22-350 °C. It was observed that the sensors responded towards NO2 (10 ppm) and C2H 5OH (250 ppm) analytes best at temperatures of 200 and 260 °C with a sensor response of 14.5 and 5.72, respectively. The sensors showed satisfactory sensitivity, repeatability as well as fast response and recovery towards both the oxidizing and the reducing analyte. The good performance was attributed to the low amount of organic impurities, large surface-to-volume ratio and high crystallinity of the solvothermally synthesized ZnO nanopyramids. 2013-02-14T01:30:28Z 2013-02-14T01:30:28Z 2013 Article Sensors and Actuators, B: Chemical, vol. 177, 2013, pages 286-294 0925-4005 http://www.sciencedirect.com/science/article/pii/S0925400512011926 http://hdl.handle.net/123456789/23503 en Elsevier B.V.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Conductometric
Ethanol
Gas sensing
Nanopyramids
Nitrogen dioxide
Solvothermal
spellingShingle Conductometric
Ethanol
Gas sensing
Nanopyramids
Nitrogen dioxide
Solvothermal
Muhammad Z., Ahmad
Jin, Chang
Muhammad Syarhabil, Ahmad, Dr.
Waclawik, Eric R., Assoc. Prof. Dr.
Wlodarski, W., Prof.
Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
description Link to publisher's homepage at http://www.elsevier.com/
author2 zamharir@gmail.com
author_facet zamharir@gmail.com
Muhammad Z., Ahmad
Jin, Chang
Muhammad Syarhabil, Ahmad, Dr.
Waclawik, Eric R., Assoc. Prof. Dr.
Wlodarski, W., Prof.
format Article
author Muhammad Z., Ahmad
Jin, Chang
Muhammad Syarhabil, Ahmad, Dr.
Waclawik, Eric R., Assoc. Prof. Dr.
Wlodarski, W., Prof.
author_sort Muhammad Z., Ahmad
title Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
title_short Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
title_full Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
title_fullStr Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
title_full_unstemmed Non-aqueous synthesis of hexagonal ZnO nanopyramids: Gas sensing properties
title_sort non-aqueous synthesis of hexagonal zno nanopyramids: gas sensing properties
publisher Elsevier B.V.
publishDate 2013
url http://dspace.unimap.edu.my/xmlui/handle/123456789/23503
_version_ 1643794035346767872
score 13.214268

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