کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10275739 | 463389 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synergistic effect of zirconium phosphate and Au nanoparticles on direct electron transfer of hemoglobin on glassy carbon electrode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The direct electron transfer of hemoglobin (Hb) was successfully realized on Au-zirconium phosphate nanocomposite (Au-ZrP) modified glassy carbon electrode (GCE) based on the synergistic effect between ZrP and Au nanoparticles. The interaction between Hb and Au-ZrP was studied by UV-Vis spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. A couple of stable and well-defined redox peaks of Hb immobilized on Au-ZrP was observed at about â134 and 35 mV in pH 6.0 buffers. Moreover, the immobilized Hb showed excellent electrocatalysis to the reduction of H2O2, which was used to construct H2O2 sensors. The obtained sensor could determine H2O2 from 15 μmol lâ1 to 0.48 mmol lâ1 with detection limit of 7.4 μmol lâ1(S/N = 3). Its apparent Michaelis-Menten constant, KappM, was 0.65 mmol lâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 585, Issue 1, 1 November 2005, Pages 44-50
Journal: Journal of Electroanalytical Chemistry - Volume 585, Issue 1, 1 November 2005, Pages 44-50
نویسندگان
Jiu-Ju Feng, Jing-Juan Xu, Hong-Yuan Chen,