In situ vibrational study of SiO2/liquid interfaces
| Autor: | K.T. Queeney, Yves Caudano, Krishnan Raghavachari, Hikaru Kobayashi, S. B. Christman, Hirokazu Fukidome, E. E. Chaban, M. K. Weldon, Olivier Pluchery, Yves J. Chabal |
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| Rok vydání: | 2002 |
| Předmět: |
In situ
Aqueous solution Chemistry Ab initio Analytical chemistry Infrared spectroscopy Surfaces and Interfaces Condensed Matter Physics Electrochemistry Surfaces Coatings and Films Ab initio quantum chemistry methods Molecular vibration Materials Chemistry Physical chemistry Fourier transform infrared spectroscopy |
| Zdroj: | Surface Science. :498-502 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/s0039-6028(01)01998-7 |
| Popis: | The surface of SiO 2 in contact with a liquid has been studied in situ by Fourier transform infrared spectroscopy, electrochemistry and ab initio quantum chemical calculations. Experimental issues arising from the cell designed have been addressed, notably the influence of the medium above the SiO 2 film on the line shape of the Si–O vibrations. Using electrical potential control of the surface with electrochemistry, the hydrated states of the SiO 2 surface have been identified, featuring a neutral SiOH species and pentavalent Si(OH)OH − anionic centers. |
| Databáze: | OpenAIRE |
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