摘要

Highly ordered and uniform TiO2 nanotube arrays were fabricated by anodic oxidation of titanium foil in ethylene glycol containing NH4F and deionized water. The morphology and surface area of TiO2 nanotube arrays were characterized by scanning electron microscope(SEM) and specific surface area measuring instrument, respectively. The diameter, the length and the surface area of TiO2 nanotube arrays are, about 180 nm, over 230 μm and 59.8 m2/g, respectively. Then, the adsorption and desorption behavior of bovine serum albumin on TiO2 nanotube arrays were investigated. The results showed that the adsorption ability of bovine serum albumin was affected by pH value, initial concentration of BSA and ionic strength, respectively. The desorption of bovine serum albumin from TiO2 nanotube arrays were affected by pH value of PBS. Bovine serum albumin easily released from TiO2 nanotube arrays in alkaline conditions, and appeared diffusion-limited benefits.

  • 出版日期2012

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