Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0039-9140(97)00295-6
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dc.titleSynthesis, characterization and sensing application of novel semiconductor oxides
dc.contributor.authorLi, G.-J.
dc.contributor.authorKawi, S.
dc.date.accessioned2014-10-09T08:22:43Z
dc.date.available2014-10-09T08:22:43Z
dc.date.issued1998-02
dc.identifier.citationLi, G.-J., Kawi, S. (1998-02). Synthesis, characterization and sensing application of novel semiconductor oxides. Talanta 45 (4) : 759-766. ScholarBank@NUS Repository. https://doi.org/10.1016/S0039-9140(97)00295-6
dc.identifier.issn00399140
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/91824
dc.description.abstractMesoporous SnO2 with high surface areas were synthesized using a cationic surfactant (N-cetyl-N,N,N-trimethylammonium bromide) as a synthetic template. Acidity of the starting synthesis slurry was used as one of the controlling parameters for the synthesis. After the SnO2 was synthesized at pH 7.15, it was calcined at 723 K for 10 h in air. It had a BET surface area of 156.8 m2 g-1 with a pore diameter of 38.4 Å. Infrared spectroscopy (FTIR) and thermal analysis techniques (thermogravimetry and differential thermal analysis) showed that the surfactant was incorporated in the mesopores of SnO2 and calcination in air at 673 723 K was needed to remove the surfactant completely from the mesopores. The effects of SnO2 surface area on its gas sensing properties were also investigated. It was observed that SnO2 with higher surface areas had much higher sensitivities to hydrogen at 573 K.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0039-9140(97)00295-6
dc.sourceScopus
dc.subjectGas sensor
dc.subjectMCM-41
dc.subjectMesoporous SnO2
dc.subjectSurfactant template
dc.typeConference Paper
dc.contributor.departmentCHEMICAL ENGINEERING
dc.description.doi10.1016/S0039-9140(97)00295-6
dc.description.sourcetitleTalanta
dc.description.volume45
dc.description.issue4
dc.description.page759-766
dc.description.codenTLNTA
dc.identifier.isiut000072165000019
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