کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10533075 | 961845 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct electrochemistry and electrocatalysis of heme proteins immobilized on gold nanoparticles stabilized by chitosan
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three heme proteins, myoglobin, hemoglobin, and cytochrome c, have been adsorbed onto chitosan-stabilized gold nanoparticles (Chit-Aus) modified Au electrode via a molecule bridge like cysteine. UV-vis spectra indicated that the proteins on Chit-Aus films retained near-native secondary structures. The fabricated procedures and electrochemical behaviors of proteins on such an interface were characterized with electrochemical impedance spectra and cyclic voltammetric techniques. It was demonstrated that Chit-Aus film could not only offer a friendly environment to immobilize protein molecules but also enhance the electron transfer ability between protein molecules and underlying electrode. The effects of scan rate and pH on the electrochemical behaviors of each heme protein are discussed in detail. The resultant electrode displayed an excellent electrocatalytic response to the reduction of H2O2, long-term stability, and good reproducibility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytical Biochemistry - Volume 342, Issue 2, 15 July 2005, Pages 280-286
Journal: Analytical Biochemistry - Volume 342, Issue 2, 15 July 2005, Pages 280-286
نویسندگان
Jiu-Ju Feng, Ge Zhao, Jing-Juan Xu, Hong-Yuan Chen,