Glucose-mediated hydrothermal synthesis and gas sensing characteristics of WO3 hollow microspheres

Choong Yong Lee; Sun Jung Kim; In Sung Hwang; Jong Heun Lee

doi:10.1016/j.snb.2009.08.031

Glucose-mediated hydrothermal synthesis and gas sensing characteristics of WO₃ hollow microspheres

Choong Yong Lee, Sun Jung Kim, In Sung Hwang, Jong Heun Lee

Research output: Contribution to journal › Article

89 Citations (Scopus)

Abstract

Tungsten-coated carbon microspheres were prepared by one-pot hydrothermal reaction of an aqueous solution containing glucose and sodium tungstate. The spheres were converted into WO₃ hollow microspheres by the decomposition of their core carbon. The [glucose]/[sodium tungstate] ratio of the stock solution determined not only the morphology of the precursors but also the phase of the powders after calcination. The WO₃ hollow microspheres showed a higher gas response and more selective detection of 0.5-2.5 ppm NO₂ than WO₃ solid and nano-porous microspheres did. The enhanced NO₂ sensing characteristics are explained in relation to the surface area, pore volume, and hollow morphology.

Original language	English
Pages (from-to)	236-242
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	142
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2009.08.031
Publication status	Published - 2009 Oct 12

Fingerprint

Keywords

Carbon template
Hollow microspheres
NO sensor
WO

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

Lee, C. Y., Kim, S. J., Hwang, I. S., & Lee, J. H. (2009). Glucose-mediated hydrothermal synthesis and gas sensing characteristics of WO₃ hollow microspheres. Sensors and Actuators, B: Chemical, 142(1), 236-242. https://doi.org/10.1016/j.snb.2009.08.031

@article{9c197ee56a3243da828189a6a174e6b7,

title = "Glucose-mediated hydrothermal synthesis and gas sensing characteristics of WO3 hollow microspheres",

abstract = "Tungsten-coated carbon microspheres were prepared by one-pot hydrothermal reaction of an aqueous solution containing glucose and sodium tungstate. The spheres were converted into WO3 hollow microspheres by the decomposition of their core carbon. The [glucose]/[sodium tungstate] ratio of the stock solution determined not only the morphology of the precursors but also the phase of the powders after calcination. The WO3 hollow microspheres showed a higher gas response and more selective detection of 0.5-2.5 ppm NO2 than WO3 solid and nano-porous microspheres did. The enhanced NO2 sensing characteristics are explained in relation to the surface area, pore volume, and hollow morphology.",

keywords = "Carbon template, Hollow microspheres, NO sensor, WO",

author = "Lee, {Choong Yong} and Kim, {Sun Jung} and Hwang, {In Sung} and Lee, {Jong Heun}",

year = "2009",

month = oct

day = "12",

doi = "10.1016/j.snb.2009.08.031",

language = "English",

volume = "142",

pages = "236--242",

journal = "Sensors and Actuators, B: Chemical",

issn = "0925-4005",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Glucose-mediated hydrothermal synthesis and gas sensing characteristics of WO3 hollow microspheres

AU - Lee, Choong Yong

AU - Kim, Sun Jung

AU - Hwang, In Sung

AU - Lee, Jong Heun

PY - 2009/10/12

Y1 - 2009/10/12

N2 - Tungsten-coated carbon microspheres were prepared by one-pot hydrothermal reaction of an aqueous solution containing glucose and sodium tungstate. The spheres were converted into WO3 hollow microspheres by the decomposition of their core carbon. The [glucose]/[sodium tungstate] ratio of the stock solution determined not only the morphology of the precursors but also the phase of the powders after calcination. The WO3 hollow microspheres showed a higher gas response and more selective detection of 0.5-2.5 ppm NO2 than WO3 solid and nano-porous microspheres did. The enhanced NO2 sensing characteristics are explained in relation to the surface area, pore volume, and hollow morphology.

AB - Tungsten-coated carbon microspheres were prepared by one-pot hydrothermal reaction of an aqueous solution containing glucose and sodium tungstate. The spheres were converted into WO3 hollow microspheres by the decomposition of their core carbon. The [glucose]/[sodium tungstate] ratio of the stock solution determined not only the morphology of the precursors but also the phase of the powders after calcination. The WO3 hollow microspheres showed a higher gas response and more selective detection of 0.5-2.5 ppm NO2 than WO3 solid and nano-porous microspheres did. The enhanced NO2 sensing characteristics are explained in relation to the surface area, pore volume, and hollow morphology.

KW - Carbon template

KW - Hollow microspheres

KW - NO sensor

KW - WO

UR - http://www.scopus.com/inward/record.url?scp=70349253880&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70349253880&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2009.08.031

DO - 10.1016/j.snb.2009.08.031

M3 - Article

AN - SCOPUS:70349253880

VL - 142

SP - 236

EP - 242

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

IS - 1

ER -

Access to Document

10.1016/j.snb.2009.08.031