Synthesis of highly ordered mesoporous Co<inf>3</inf>O<inf>4</inf> for gas sensing

Su, DW; Liu, H; Ahn, HJ; Wang, GX

Synthesis of highly ordered mesoporous Co<inf>3</inf>O<inf>4</inf> for gas sensing

Su, DW

Liu, H

Ahn, HJ Wang, GX

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Publication Type:: Journal Article
Citation:: Journal of Nanoscience and Nanotechnology, 2013, 13 (5), pp. 3357 - 3359
Issue Date:: 2013-05-01

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Field	Value	Language
dc.contributor.author	Su, DW https://orcid.org/0000-0002-3972-8205	en_US
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472	en_US
dc.contributor.author	Ahn, HJ	en_US
dc.contributor.author	Wang, GX https://orcid.org/0000-0003-4295-8578	en_US
dc.date.issued	2013-05-01	en_US
dc.identifier.citation	Journal of Nanoscience and Nanotechnology, 2013, 13 (5), pp. 3357 - 3359	en_US
dc.identifier.issn	1533-4880	en_US
dc.identifier.uri	http://hdl.handle.net/10453/27902
dc.description.abstract	Highly ordered mesoporous Co3O4 nanostructures were prepared using SBA-15 silica as hard templates. The mesoporous structures were characterized by X-ray diffraction, high resolution transmission electron microscopy, and N2 adsorption/desorption isotherm analysis. The results demonstrated that the as-prepared mesoporous Co3O4 has an ordered P6mm symmetric mesoporous structure. The optical absorption properties of the mesoporous Co3O4 were investigated by UV-Vis spectroscopy and the results indicate that the mesoporous Co 3O4 materials are semiconducting with direct band gaps of 2, 1.385 and 0.38 eV. The gas-sensing performance of the mesoporous Co 3O4 was tested towards a series of typical solvents. They demonstrated a good sensing performance towards these vapour with rapid response and high sensitivity at low operating temperature. Copyright © 2013 American Scientific Publishers.	en_US
dc.relation	http://purl.org/au-research/grants/arc/LP0989134
dc.relation.ispartof	Journal of Nanoscience and Nanotechnology	en_US
dc.relation.isbasedon	10.1166/jnn.2013.7238	en_US
dc.subject.classification	Nanoscience & Nanotechnology	en_US
dc.subject.mesh	Oxides	en_US
dc.subject.mesh	Cobalt	en_US
dc.subject.mesh	Gases	en_US
dc.subject.mesh	Conductometry	en_US
dc.subject.mesh	Equipment Design	en_US
dc.subject.mesh	Equipment Failure Analysis	en_US
dc.subject.mesh	Particle Size	en_US
dc.subject.mesh	Semiconductors	en_US
dc.subject.mesh	Porosity	en_US
dc.subject.mesh	Nanostructures	en_US
dc.title	Synthesis of highly ordered mesoporous Co<inf>3</inf>O<inf>4</inf> for gas sensing	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	13	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	10 Technology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	13	en_US

Abstract:

Highly ordered mesoporous Co3O4 nanostructures were prepared using SBA-15 silica as hard templates. The mesoporous structures were characterized by X-ray diffraction, high resolution transmission electron microscopy, and N2 adsorption/desorption isotherm analysis. The results demonstrated that the as-prepared mesoporous Co3O4 has an ordered P6mm symmetric mesoporous structure. The optical absorption properties of the mesoporous Co3O4 were investigated by UV-Vis spectroscopy and the results indicate that the mesoporous Co 3O4 materials are semiconducting with direct band gaps of 2, 1.385 and 0.38 eV. The gas-sensing performance of the mesoporous Co 3O4 was tested towards a series of typical solvents. They demonstrated a good sensing performance towards these vapour with rapid response and high sensitivity at low operating temperature. Copyright © 2013 American Scientific Publishers.

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http://hdl.handle.net/10453/27902