期刊
JOURNAL OF NANOMATERIALS
卷 2012, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2012/920483
关键词
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资金
- Russian Federal Agency for Science and Innovations
- Russian Foundation of Basic Research [10-03-00997-a, 11-03-12154-ofi-m-2011, 12-03-00800-a]
- Haldor Topsoe A/S
- M. V. Lomonosov Moscow State University Program of Development
A conventional hydrothermal method widely used for the preparation of titania-based nanotubes still generates many unsolved questions. One of them is definitely connected with the influence of a posthydrothermal treatment of titania nanotubes on their micromorphology, structure, and adsorption characteristics. Here, it was analyzed systematically by a group of methods including nitrogen adsorption and temperature-programmed desorption of ammonia and carbon dioxide. It is proved that adsorption characteristics and the surface state of titania nanotubes correlate with a sodium content, since sodium ions act as Lewis acid sites and shield Ti4+ acid sites of the nanotubes. To obey a balance between chemical and heat treatments of the nanotubes to design their functional properties has been suggested.
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