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Enhanced catalytic activity and near room temperature gas sensing properties of SnO2 nanoclusters@mesoporous Sn(IV) organophosphonate composite

Abstract

A simple, facile and one pot route for preparing SnO2 nanoclusters embedded on a mesoporous Sn(IV)organophosphonate(MSnP) framework is described. Reaction of SnCl4.5H2O with a flexible tris-phosphonic acid, mesityl-1,3,5-tris(methylenephosphonic acid) in presence of a surfactant under hydrothermal conditions produced the desired nanocomposite, SnO2@MSnP. Analytical, spectroscopic and microscopic studies establish that SnO2@MSnP composite is comprised of SnO2 nanoparticles of an average size of 5 nm evenly and abundantly dispersed over the mesoporous Sn(IV) organophosphonate framework. The mesoporous metal organophosphonate support significantly augments the catalytic efficacy and vapor sensitivity of SnO2 nanoparticles. The catalytic efficiency of SnO2@MSnP was tested for two acid catalyzed reactions viz. deoximation reaction and esterification of fatty acids. SnO2@MSnP exhibits remarkable sensitivity towards ammonia and acetone vapors at near room temperature and under open atmospheric conditions. The present method represents an important step towards preparation of mesoporous metal organophosphonate supported metal oxide nanoclusters and hence offers an easy access to functional metal oxide based nanocomposite.

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Publication details

The article was accepted on 09 Jun 2017 and first published on 12 Jun 2017


Article type: Paper
DOI: 10.1039/C7DT01939D
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Enhanced catalytic activity and near room temperature gas sensing properties of SnO2 nanoclusters@mesoporous Sn(IV) organophosphonate composite

    S. Borah, B. Bhattacharyya, J. Deka, A. Borah, A. Devi, D. Deka, S. Mishra, K. Raidongia and N. Gogoi, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01939D

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