Aspects Relating to Stability of Modified Passive Stratum on TiO2 Nanostructure

作者：Ionita Daniela^*; Mazare Anca; Portan Diana; Demetrescu Ioana

来源：Metals and Materials International, 2011, 17(2): 321-327.

DOI：10.1007/s12540-011-0421-8

• biomaterials
• anodization
• electrochemistry
• scanning electron microscopy (SEM)
• ICP-MS

Two kinds of nanotube structures differing from the point of view of their dimensions were obtained using anodizing in two different fluoride electrolytes and these structures were investigated regarding stability. The nanotubes have diameters of around 100 and 65 nm, respectively, and the testing solutions were simulated body fluids (SBF) and NaCl 0.9%. As stability experiments, cyclic voltammetry was performed and ions release was measured. The quantity of released cations in time as a kinetic aspect of passive stratum behavior was followed with an inductively coupled plasma mass spectrometer (ICP-MS) and apatite forming in SBF was found with infrared spectra. This study led to a comparison between the modification and the behavior of passive stratum on nanotubes as a function of their diameters.

• 出版日期2011-4