Chemical Tuning of Adsorption Properties of Titanate Nanotubes

Anastasia V. Grigorieva, Valentina V. Yuschenko, Irina I. Ivanova, Eugene A. Goodilin, Yuri D. Tretyakov
2012 Journal of Nanomaterials  
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
more » ... haracteristics 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.
doi:10.1155/2012/920483 fatcat:ok4cuzm7lvbu5fenbp3d34fhsm