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https://doi.org/10.1021/jp056107w
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. https://doi.org/10.1021/jp056107w | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/87544 | ISSN: | 19327447 | DOI: | 10.1021/jp056107w |
Appears in Collections: | Staff Publications |
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