C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction

Kwon Il Choi, Hae Ryong Kim, Kang Min Kim, Dawei Liu, Guozhong Cao, Jong Heun Lee

Research output: Contribution to journalArticle

138 Citations (Scopus)

Abstract

Various morphologies of Co-containing precursors such as nanorods, nanosheets, and nanocubes were prepared by controlling the solvothermal reaction using cobalt acetate, L(+)-lysine, and oxalic acid, all of which were successfully converted into Co3O4 nanostructures without morphological variation. The gas responses of these Co3O4 nanosheets, nanorods, and nanocubes to 100 ppm C2H5OH at 300 °C were 10.5, 4.7, and 4.5 times higher than those of the Co3O4 agglomerated nanopowders, respectively. In addition, the selectivity to C2H5OH over CO and H2, as well as the response/recovery kinetics, were significantly improved. These enhanced gas-sensing characteristics were attributed to the less agglomerated nanostructures of the sensing materials.

Original languageEnglish
Pages (from-to)183-189
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume146
Issue number1
DOIs
Publication statusPublished - 2010 Apr 8

Fingerprint

Nanosheets
Nanorods
nanorods
Nanostructures
cobalt acetates
Gases
Oxalic Acid
oxalic acid
Oxalic acid
lysine
Carbon Monoxide
Cobalt
gases
Lysine
Acetates
selectivity
recovery
Recovery
Kinetics
kinetics

Keywords

  • CHOH sensor
  • CoO
  • Gas sensors
  • Nanostructures
  • Response/recovery time

ASJC Scopus subject areas

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

Cite this

C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction. / Choi, Kwon Il; Kim, Hae Ryong; Kim, Kang Min; Liu, Dawei; Cao, Guozhong; Lee, Jong Heun.

In: Sensors and Actuators, B: Chemical, Vol. 146, No. 1, 08.04.2010, p. 183-189.

Research output: Contribution to journalArticle

Choi, Kwon Il ; Kim, Hae Ryong ; Kim, Kang Min ; Liu, Dawei ; Cao, Guozhong ; Lee, Jong Heun. / C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 146, No. 1. pp. 183-189.
@article{41d64041c23c470199a02edf9a1dc068,
title = "C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction",
abstract = "Various morphologies of Co-containing precursors such as nanorods, nanosheets, and nanocubes were prepared by controlling the solvothermal reaction using cobalt acetate, L(+)-lysine, and oxalic acid, all of which were successfully converted into Co3O4 nanostructures without morphological variation. The gas responses of these Co3O4 nanosheets, nanorods, and nanocubes to 100 ppm C2H5OH at 300 °C were 10.5, 4.7, and 4.5 times higher than those of the Co3O4 agglomerated nanopowders, respectively. In addition, the selectivity to C2H5OH over CO and H2, as well as the response/recovery kinetics, were significantly improved. These enhanced gas-sensing characteristics were attributed to the less agglomerated nanostructures of the sensing materials.",
keywords = "CHOH sensor, CoO, Gas sensors, Nanostructures, Response/recovery time",
author = "Choi, {Kwon Il} and Kim, {Hae Ryong} and Kim, {Kang Min} and Dawei Liu and Guozhong Cao and Lee, {Jong Heun}",
year = "2010",
month = "4",
day = "8",
doi = "10.1016/j.snb.2010.02.050",
language = "English",
volume = "146",
pages = "183--189",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction

AU - Choi, Kwon Il

AU - Kim, Hae Ryong

AU - Kim, Kang Min

AU - Liu, Dawei

AU - Cao, Guozhong

AU - Lee, Jong Heun

PY - 2010/4/8

Y1 - 2010/4/8

N2 - Various morphologies of Co-containing precursors such as nanorods, nanosheets, and nanocubes were prepared by controlling the solvothermal reaction using cobalt acetate, L(+)-lysine, and oxalic acid, all of which were successfully converted into Co3O4 nanostructures without morphological variation. The gas responses of these Co3O4 nanosheets, nanorods, and nanocubes to 100 ppm C2H5OH at 300 °C were 10.5, 4.7, and 4.5 times higher than those of the Co3O4 agglomerated nanopowders, respectively. In addition, the selectivity to C2H5OH over CO and H2, as well as the response/recovery kinetics, were significantly improved. These enhanced gas-sensing characteristics were attributed to the less agglomerated nanostructures of the sensing materials.

AB - Various morphologies of Co-containing precursors such as nanorods, nanosheets, and nanocubes were prepared by controlling the solvothermal reaction using cobalt acetate, L(+)-lysine, and oxalic acid, all of which were successfully converted into Co3O4 nanostructures without morphological variation. The gas responses of these Co3O4 nanosheets, nanorods, and nanocubes to 100 ppm C2H5OH at 300 °C were 10.5, 4.7, and 4.5 times higher than those of the Co3O4 agglomerated nanopowders, respectively. In addition, the selectivity to C2H5OH over CO and H2, as well as the response/recovery kinetics, were significantly improved. These enhanced gas-sensing characteristics were attributed to the less agglomerated nanostructures of the sensing materials.

KW - CHOH sensor

KW - CoO

KW - Gas sensors

KW - Nanostructures

KW - Response/recovery time

UR - http://www.scopus.com/inward/record.url?scp=77949918122&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77949918122&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2010.02.050

DO - 10.1016/j.snb.2010.02.050

M3 - Article

AN - SCOPUS:77949918122

VL - 146

SP - 183

EP - 189

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

IS - 1

ER -