Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.snb.2009.08.050
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dc.titleTemplate-free synthesis and gas sensing properties of well-controlled porous tin oxide nanospheres
dc.contributor.authorYeow, S.C.
dc.contributor.authorOng, W.L.
dc.contributor.authorWong, A.S.W.
dc.contributor.authorHo, G.W.
dc.date.accessioned2014-10-07T04:37:55Z
dc.date.available2014-10-07T04:37:55Z
dc.date.issued2009-12-04
dc.identifier.citationYeow, S.C., Ong, W.L., Wong, A.S.W., Ho, G.W. (2009-12-04). Template-free synthesis and gas sensing properties of well-controlled porous tin oxide nanospheres. Sensors and Actuators, B: Chemical 143 (1) : 295-301. ScholarBank@NUS Repository. https://doi.org/10.1016/j.snb.2009.08.050
dc.identifier.issn09254005
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/83154
dc.description.abstractHigh yield of tin dioxide (SnO2) nanospheres with various degrees porosity have been successfully synthesized without any physical template via an economical, easily scalable hydrothermal process. The porosity or the specific surface area of SnO2 nanospheres can effectively be tuned via precursor concentration, temperature and the removal of additive urea. Higher reaction temperature, low precursor concentration and elimination of urea additive favorably increase the porosity of the nanospheres. The gas sensing properties of the nanospheres show that the operating temperature has a strong influence on the response of the sensor whereby a higher operating temperature leads to greater change in conductance and hence, greater response. Other than the specific surface area, pore diameter of the nanospheres has shown to have an effect on the sensing behaviour. The response time is dependent on the operating temperature, 90% of resistance change (Rair-Rgas) was achieved within the first 1.3-3.0 min. © 2009 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.snb.2009.08.050
dc.sourceScopus
dc.subjectHydrogen
dc.subjectHydrothermal
dc.subjectMesoporous
dc.subjectNanocrystalline
dc.subjectNanospheres
dc.subjectSensor
dc.subjectTin oxide
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1016/j.snb.2009.08.050
dc.description.sourcetitleSensors and Actuators, B: Chemical
dc.description.volume143
dc.description.issue1
dc.description.page295-301
dc.description.codenSABCE
dc.identifier.isiut000272376800044
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