Adsorption and electrochemistry of hemoglobin on Chi-carbon nanotubes composite film

作者：Zheng W; Chen Y Q; Zheng Y F^*

来源：Applied Surface Science, 2008, 255(2): 571-573.

DOI：10.1016/j.apsusc.2008.06.096

• Carbon nanotubes
• Chitosan
• Hemoglobin
• Direct electron transfer

This study describes the noncovalently functionalization of carbon nanotubes (CNTs) with natural biopolymer chitosan (Chi) as substrate for hemoglobin (Hb) immobilization. The noncovalently Chi-functionalized CNTs possessed an improved solubility in aqueous solution and was beneficial to form three-dimensional configuration of the CNTs film electrode. The adsorbed Hb in Chi-CNTs interface showed a pair of quasi-reversible redox peak with a formal potential of -0.34 V (vs. SCE) in 0.10 MpH 7.0 phosphate buffer solution and possessed good bioelectrochemical catalytic activities toward the reductions of H(2)O(2).

• 出版日期2008-11-15
• 单位哈尔滨工程大学; 北京大学