کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220975 463364 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
pH-Sensitive syringaldazine modified carbon ceramic electrode for bioelectrocatalytic dioxygen reduction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
pH-Sensitive syringaldazine modified carbon ceramic electrode for bioelectrocatalytic dioxygen reduction
چکیده انگلیسی

Voltammetrically stable water insoluble 3,5-dimethoxy-4-hydroxybenzaldehydrazine (syringaldazine) modified electrode was obtained by sol–gel processing of methyltrimethoxysilane based sol with dissolved syringaldazine together with dispersed graphite particles. This silicate carbon ceramic electrode exhibits stable voltammetry corresponding to the surface confined oxidation–reduction process. The pH dependence of the immobilized syringaldazine redox potential obeys the Nernst equation in the range of 3–10. After further modification with extracellular lyophilized laccase from Cerrena unicolor encapsulated within a thin hydrophilic silicate film the electrode exhibits catalytic activity towards dioxygen reduction. Both catalytic current and potential are pH dependent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 608, Issue 1, 15 September 2007, Pages 31–36
نویسندگان
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