ZnO hierarchical nanostructures grown at room temperature and their C 2H5OH sensor applications

Kang Min Kim; Hae Ryong Kim; Kwon Il Choi; Hyo Joong Kim; Jong Heun Lee

doi:10.1016/j.snb.2011.01.040

ZnO hierarchical nanostructures grown at room temperature and their C ₂H₅OH sensor applications

Kang Min Kim, Hae Ryong Kim, Kwon Il Choi, Hyo Joong Kim, Jong Heun Lee

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

62 Citations (Scopus)

Abstract

Highly crystalline ZnO hierarchical nanostructures were prepared at room temperature through the alkaline hydrolysis of zinc salt by the forced mixing of two immiscible solutions: Zn-nitrate aqueous solution and oleic-acid-dissolved n-hexane solution. The oleic acid acted as a surfactant in the room-temperature formation of well-defined ZnO hierarchical nanostructures, which subsequently demonstrated a sensitive and selective detection of C₂H ₅OH. The responses of these hierarchical nanostructures to 10-100 ppm C₂H₅OH ranged from 15.7 to 177.7, which were 7-9 times higher than those of the agglomerated nanoparticles.

Original language	English
Pages (from-to)	745-751
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	155
Issue number	2
DOIs	https://doi.org/10.1016/j.snb.2011.01.040
Publication status	Published - 2011 Jul 20

Keywords

CHOH sensors
Gas sensors
Hierarchical nanostructures
ZnO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2011.01.040

Cite this

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title = "ZnO hierarchical nanostructures grown at room temperature and their C 2H5OH sensor applications",

abstract = "Highly crystalline ZnO hierarchical nanostructures were prepared at room temperature through the alkaline hydrolysis of zinc salt by the forced mixing of two immiscible solutions: Zn-nitrate aqueous solution and oleic-acid-dissolved n-hexane solution. The oleic acid acted as a surfactant in the room-temperature formation of well-defined ZnO hierarchical nanostructures, which subsequently demonstrated a sensitive and selective detection of C2H 5OH. The responses of these hierarchical nanostructures to 10-100 ppm C2H5OH ranged from 15.7 to 177.7, which were 7-9 times higher than those of the agglomerated nanoparticles.",

keywords = "CHOH sensors, Gas sensors, Hierarchical nanostructures, ZnO",

author = "Kim, {Kang Min} and Kim, {Hae Ryong} and Choi, {Kwon Il} and Kim, {Hyo Joong} and Lee, {Jong Heun}",

note = "Funding Information: This work was supported by KOSEF NRL program grant funded by the Korean government (MEST) (No. R0A-2008-000-20032-0 ) and the Fundamental R&D program for Core Technology of Materials (M2008010013) funded by Ministry of Knowledge Economy . ",

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AU - Choi, Kwon Il

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AU - Lee, Jong Heun

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