科研之友
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摘要
Gold nanotubule membranes with about 55 nm of diameter were prepared by chemical deposition of gold on polycarbonate templates membrane. After being modified by cysteine and guanide thiocyanate, the nanomembranes were studied with BSA and IgG as the model molecules. The results show that guanide thiocyanate facilitated transporting of BSA by 30 to 50 times because of hydrophilic and denaturalization effects whereas IgG almost retained its' transporting speed. Then the separation processes were carried out and separation degrees of 31. 6 and 23. 1 were obtained for cysteine and guanide thiocyanate modified gold nanotubules, respectively at pH 4. 5. The results indicate that gold nanotubule membranes has a good separating capability for protein.
- 出版日期2004-12-10
- 单位湖南大学
