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Title: Local structure changes of microporous titanosilicate ETS-10 upon acid treatment
Authors: Lv, L. 
Zhou, J.K.
Su, F. 
Zhao, X.S. 
Issue Date: 18-Jan-2007
Citation: Lv, L., Zhou, J.K., Su, F., Zhao, X.S. (2007-01-18). Local structure changes of microporous titanosilicate ETS-10 upon acid treatment. Journal of Physical Chemistry C 111 (2) : 773-778. ScholarBank@NUS Repository.
Abstract: In the present work, the local structure changes of microporous titanosilicate ETS-10 upon treatment with citric acid, phosphoric acid, and nitric acid were characterized using XRD, FTIR, Raman, XPS, DR-UV, 29Si MAS NMR, and 1H-29Si CP MAS NMR techniques. The experimental results suggested that regardless of the nature of the acids, the replacement of alkali cations by protons altered the local structure of ETS-10 solid, including partial dissolution of the siliceous matrix and leaching of titanium species from the TiO6 chains. In the meantime, it was observed that the hexacoordinated Ti species of ETS-10 were changed to penta- and/or tetracoordinated ones, generating terminal TiOH groups, accounting for the observed enhancement of photodegradation activity of the acid-treated ETS-10 materials toward phenol compounds. © 2007 American Chemical Society.
Source Title: Journal of Physical Chemistry C
ISSN: 19327447
DOI: 10.1021/jp056107w
Appears in Collections:Staff Publications

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