Two-step fabrication of ZnO nanosheets for high-performance VOCs gas sensor

Shao Lin Zhang, Jeong Ok Lim, Jeung Soo Huh, Jin Seo Noh, Wooyoung Lee

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Sheet-like ZnO nanostructure was successfully synthesized through a simple, cost-effective, and lowtemperature sonochemical process followed by an etching treatment in an alkali environment at room temperature without any catalyst, template, or seed layer. The morphology and crystallinity of the products were examined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The as-prepared nanosheets with high purity were single crystals and well-dispersed. A possible formation mechanism of ZnO nanosheets was proposed based on the experimental results. Micro gas sensor fabricated from the as-prepared ZnO nanosheets were tested to different concentration of volatile organic compounds (VOCs) gases. The gas-sensing results revealed that ZnO nanosheets-based micro sensor exhibited high sensitivity to acetaldehyde and formaldehyde with response time within 10 s and the detection limit down to 50 ppb. The excellent sensing property of ZnO nanosheets is mainly attributed to their large specific area, accessible surface, and less agglomerated configuration.

Original languageEnglish
JournalCurrent Applied Physics
Volume13
Issue number4 SUPPL.2
DOIs
Publication statusPublished - 2013 Jul 20

Fingerprint

Volatile Organic Compounds
Nanosheets
volatile organic compounds
Chemical sensors
Volatile organic compounds
Fabrication
fabrication
sensors
gases
acetaldehyde
formaldehyde
Gases
seeds
alkalies
crystallinity
purity
templates
etching
Acetaldehyde
costs

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Zhang, Shao Lin ; Lim, Jeong Ok ; Huh, Jeung Soo ; Noh, Jin Seo ; Lee, Wooyoung. / Two-step fabrication of ZnO nanosheets for high-performance VOCs gas sensor. In: Current Applied Physics. 2013 ; Vol. 13, No. 4 SUPPL.2.
@article{61f844bcdc574e5facc69a7aa96c436f,
title = "Two-step fabrication of ZnO nanosheets for high-performance VOCs gas sensor",
abstract = "Sheet-like ZnO nanostructure was successfully synthesized through a simple, cost-effective, and lowtemperature sonochemical process followed by an etching treatment in an alkali environment at room temperature without any catalyst, template, or seed layer. The morphology and crystallinity of the products were examined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The as-prepared nanosheets with high purity were single crystals and well-dispersed. A possible formation mechanism of ZnO nanosheets was proposed based on the experimental results. Micro gas sensor fabricated from the as-prepared ZnO nanosheets were tested to different concentration of volatile organic compounds (VOCs) gases. The gas-sensing results revealed that ZnO nanosheets-based micro sensor exhibited high sensitivity to acetaldehyde and formaldehyde with response time within 10 s and the detection limit down to 50 ppb. The excellent sensing property of ZnO nanosheets is mainly attributed to their large specific area, accessible surface, and less agglomerated configuration.",
author = "Zhang, {Shao Lin} and Lim, {Jeong Ok} and Huh, {Jeung Soo} and Noh, {Jin Seo} and Wooyoung Lee",
year = "2013",
month = "7",
day = "20",
doi = "10.1016/j.cap.2012.12.021",
language = "English",
volume = "13",
journal = "Current Applied Physics",
issn = "1567-1739",
publisher = "Elsevier",
number = "4 SUPPL.2",

}

Two-step fabrication of ZnO nanosheets for high-performance VOCs gas sensor. / Zhang, Shao Lin; Lim, Jeong Ok; Huh, Jeung Soo; Noh, Jin Seo; Lee, Wooyoung.

In: Current Applied Physics, Vol. 13, No. 4 SUPPL.2, 20.07.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Two-step fabrication of ZnO nanosheets for high-performance VOCs gas sensor

AU - Zhang, Shao Lin

AU - Lim, Jeong Ok

AU - Huh, Jeung Soo

AU - Noh, Jin Seo

AU - Lee, Wooyoung

PY - 2013/7/20

Y1 - 2013/7/20

N2 - Sheet-like ZnO nanostructure was successfully synthesized through a simple, cost-effective, and lowtemperature sonochemical process followed by an etching treatment in an alkali environment at room temperature without any catalyst, template, or seed layer. The morphology and crystallinity of the products were examined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The as-prepared nanosheets with high purity were single crystals and well-dispersed. A possible formation mechanism of ZnO nanosheets was proposed based on the experimental results. Micro gas sensor fabricated from the as-prepared ZnO nanosheets were tested to different concentration of volatile organic compounds (VOCs) gases. The gas-sensing results revealed that ZnO nanosheets-based micro sensor exhibited high sensitivity to acetaldehyde and formaldehyde with response time within 10 s and the detection limit down to 50 ppb. The excellent sensing property of ZnO nanosheets is mainly attributed to their large specific area, accessible surface, and less agglomerated configuration.

AB - Sheet-like ZnO nanostructure was successfully synthesized through a simple, cost-effective, and lowtemperature sonochemical process followed by an etching treatment in an alkali environment at room temperature without any catalyst, template, or seed layer. The morphology and crystallinity of the products were examined by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The as-prepared nanosheets with high purity were single crystals and well-dispersed. A possible formation mechanism of ZnO nanosheets was proposed based on the experimental results. Micro gas sensor fabricated from the as-prepared ZnO nanosheets were tested to different concentration of volatile organic compounds (VOCs) gases. The gas-sensing results revealed that ZnO nanosheets-based micro sensor exhibited high sensitivity to acetaldehyde and formaldehyde with response time within 10 s and the detection limit down to 50 ppb. The excellent sensing property of ZnO nanosheets is mainly attributed to their large specific area, accessible surface, and less agglomerated configuration.

UR - http://www.scopus.com/inward/record.url?scp=84890549286&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890549286&partnerID=8YFLogxK

U2 - 10.1016/j.cap.2012.12.021

DO - 10.1016/j.cap.2012.12.021

M3 - Article

AN - SCOPUS:84890549286

VL - 13

JO - Current Applied Physics

JF - Current Applied Physics

SN - 1567-1739

IS - 4 SUPPL.2

ER -