کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10275948 | 463410 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Bilirubin oxidase in multiple layers catalyzes four-electron reduction of dioxygen to water without redox mediators
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Bilirubin oxidase (BOD) was immobilized as a multiple layer in a cationic polymer (poly-l-lysine) matrix on an electrode surface. The BOD-modified electrode catalyzed four-electron reduction of dioxygen (O2) to water, without any mediator, to produce a diffusion-controlled voltammogram for the O2 reduction in a quiescent solution. The voltammogram was successfully analyzed by the theory of irreversible voltammograms. Under convective conditions where O2 depletion was negligible near the electrode surface, a steady-state voltammogram was obtained with a limiting current density of about 1 mAÂ cmâ2. The steady-state voltammogram was explained by an equation derived on the basis of a reaction layer model, in which BOD was considered to be diffusible in the immobilized layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 576, Issue 1, 15 February 2005, Pages 113-120
Journal: Journal of Electroanalytical Chemistry - Volume 576, Issue 1, 15 February 2005, Pages 113-120
نویسندگان
Seiya Tsujimura, Kenji Kano, Tokuji Ikeda,