Please use this identifier to cite or link to this item:
|Title:||Template-free synthesis and gas sensing properties of well-controlled porous tin oxide nanospheres|
|Citation:||Yeow, 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|
|Abstract:||High 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.|
|Source Title:||Sensors and Actuators, B: Chemical|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 10, 2018
WEB OF SCIENCETM
checked on Nov 26, 2018
checked on Jul 6, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.