NO2 sensing characteristics of ZnO nanorods prepared by hydrothermal method

Pyeong Seok Cho; Ki Won Kim; Jong Heun Lee

doi:10.1007/s10832-006-8146-7

NO₂ sensing characteristics of ZnO nanorods prepared by hydrothermal method

Pyeong Seok Cho, Ki Won Kim, Jong Heun Lee

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

ZnO nanorods were prepared via a hydrothermal reaction in a solution containing Zn(NO₃)₂•6H₂O, NaOH, cyclohexylamine, ethanol and water, and their NO₂ and CO sensing behaviors were investigated. The morphology and agglomeration of ZnO nanorods could be manipulated by controlling the amount of water in the solution, which was explained by the variation in the [OH^-] due to an interaction between the water and cyclohexylamine. Sea-urchin-like and well-dispersed ZnO nanorods were prepared at low and high water content, respectively. Well-dispersed ZnO nanorods showed 1.8 fold change in resistance at 1 ppm NO₂ while there was no significant change in resistance at 50 ppm CO. The present ZnO nanorods can be used in automated car ventilation systems to detect NO₂ in the presence of CO.

Original language	English
Pages (from-to)	975-978
Number of pages	4
Journal	Journal of Electroceramics
Volume	17
Issue number	2-4
DOIs	https://doi.org/10.1007/s10832-006-8146-7
Publication status	Published - 2006 Dec

Keywords

Air quality sensor
Hydrothermal synthesis
NO sensor
ZnO nanorods

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1007/s10832-006-8146-7

Cite this

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title = "NO2 sensing characteristics of ZnO nanorods prepared by hydrothermal method",

abstract = "ZnO nanorods were prepared via a hydrothermal reaction in a solution containing Zn(NO3)2•6H2O, NaOH, cyclohexylamine, ethanol and water, and their NO2 and CO sensing behaviors were investigated. The morphology and agglomeration of ZnO nanorods could be manipulated by controlling the amount of water in the solution, which was explained by the variation in the [OH-] due to an interaction between the water and cyclohexylamine. Sea-urchin-like and well-dispersed ZnO nanorods were prepared at low and high water content, respectively. Well-dispersed ZnO nanorods showed 1.8 fold change in resistance at 1 ppm NO2 while there was no significant change in resistance at 50 ppm CO. The present ZnO nanorods can be used in automated car ventilation systems to detect NO2 in the presence of CO.",

keywords = "Air quality sensor, Hydrothermal synthesis, NO sensor, ZnO nanorods",

author = "Cho, {Pyeong Seok} and Kim, {Ki Won} and Lee, {Jong Heun}",

note = "Funding Information: Acknowledgments This work was supported by Grant No. R01-2005-000-10648-0 (2005) from the Basic Research Program of the Korean Science and Engineering Foundation.",

year = "2006",

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doi = "10.1007/s10832-006-8146-7",

language = "English",

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T1 - NO2 sensing characteristics of ZnO nanorods prepared by hydrothermal method

AU - Cho, Pyeong Seok

AU - Kim, Ki Won

AU - Lee, Jong Heun

N1 - Funding Information: Acknowledgments This work was supported by Grant No. R01-2005-000-10648-0 (2005) from the Basic Research Program of the Korean Science and Engineering Foundation.

PY - 2006/12

Y1 - 2006/12

N2 - ZnO nanorods were prepared via a hydrothermal reaction in a solution containing Zn(NO3)2•6H2O, NaOH, cyclohexylamine, ethanol and water, and their NO2 and CO sensing behaviors were investigated. The morphology and agglomeration of ZnO nanorods could be manipulated by controlling the amount of water in the solution, which was explained by the variation in the [OH-] due to an interaction between the water and cyclohexylamine. Sea-urchin-like and well-dispersed ZnO nanorods were prepared at low and high water content, respectively. Well-dispersed ZnO nanorods showed 1.8 fold change in resistance at 1 ppm NO2 while there was no significant change in resistance at 50 ppm CO. The present ZnO nanorods can be used in automated car ventilation systems to detect NO2 in the presence of CO.

AB - ZnO nanorods were prepared via a hydrothermal reaction in a solution containing Zn(NO3)2•6H2O, NaOH, cyclohexylamine, ethanol and water, and their NO2 and CO sensing behaviors were investigated. The morphology and agglomeration of ZnO nanorods could be manipulated by controlling the amount of water in the solution, which was explained by the variation in the [OH-] due to an interaction between the water and cyclohexylamine. Sea-urchin-like and well-dispersed ZnO nanorods were prepared at low and high water content, respectively. Well-dispersed ZnO nanorods showed 1.8 fold change in resistance at 1 ppm NO2 while there was no significant change in resistance at 50 ppm CO. The present ZnO nanorods can be used in automated car ventilation systems to detect NO2 in the presence of CO.

KW - Air quality sensor

KW - Hydrothermal synthesis

KW - NO sensor

KW - ZnO nanorods

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