Cited 31 time in webofscience Cited 33 time in scopus

Preparation of ZnO nanorods by microemulsion synthesis and their application as a CO gas sensor

Title
Preparation of ZnO nanorods by microemulsion synthesis and their application as a CO gas sensor
Authors
Lim, Sang KyooHwang, Sung-HoKim, SoonhyunPark, Hyunwoong
DGIST Authors
Lim, Sang KyooHwang, Sung-HoKim, Soonhyun
Issue Date
2011-12-15
Citation
Sensors and Actuators, B: Chemical, 160(1), 94-98
Type
Article
Article Type
Article
Keywords
Alkyl Chain LengthsAspect RatioBenzeneBET Surface AreaBrunauer-Emmett-Teller Surface AreasChain LengthChemical SensorsCo Gas SensorEthylbenzeneGas DetectorsGas Sensing ElectrodesGas Sensing PropertiesGas SensorLarge Aspect RatioMicro-EmulsionMicro-Emulsion MethodMicroemulsion SynthesisMicroemulsionsNanocompositesNanorodNanorodsOxygen VacanciesSaltsSensorsSodium SaltSulfonic AcidSurface Active AgentsSurface AreaSurface DefectsSurfactant AssistedZincZinc OxideZinc Oxide NanorodsZnO Nanorod
ISSN
0925-4005
Abstract
Zinc oxide nanorods with different surface area were synthesized by surfactant assisted microemulsion method. The alkyl chain length of surfactant would affect aspect ratio of ZnO nanorods. ZnO nanorods synthesized by ethyl benzene acid sodium salt (EBS), which is surfactant with short alkyl chain length, show higher aspect ratio than ones by dodecyl benzene sulfonic acid sodium salt (DBS). These nanorods had diameters in the range of 80-300 nm and length of up to several microns. The Brunauer-Emmett-Teller (BET) surface area of the ZnO nanorods was strongly affected by the morphology of the nanorods. The BET surface area of the nanorods synthesized with EBS was higher than the surface area of the nanorods synthesized with DBS (20.2 and 14.1 m2/g for EBS and DBS, respectively). The response of ZnO nanorods to CO in air was strongly affected by surface area, defects and oxygen vacancies. The results demonstrate that the microemulsion synthesis is an easy and useful method to synthesize ZnO nanorods with large aspect ratio, which may enhance their gas sensing properties. © 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5381
DOI
10.1016/j.snb.2011.07.018
Publisher
Elsevier
Related Researcher
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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