کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1268941 972433 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure
چکیده انگلیسی

Electropolymerization regime of meso-tetrakis(3-methoxy-4-hydroxyphenyl) porphyrin is optimized to yield films possessing both electrocatalytical and permselective properties towards nitric oxide oxidation. The sensor composed of electrochemically oxidized carbon fiber, covered solely with nickel porphyrin derivative layer electropolymerized using our method, is characterized by high selectivity towards nitrite (1:600), ascorbate (1:8000) and dopamine (> 1:80), determined by constant potential amperometry at 830 mV (vs. Ag/AgCl). Selectivity for ascorbate and dopamine as well as detection limit for NO (1.5 nM at S/N = 3) is 5-10 times better than parameters usually reported for Nafion® coated porphyrinic sensors. Nafion coating can further enhance selectivity properties as well as aids to the stability of the sensors’ responses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioelectrochemistry - Volume 71, Issue 1, September 2007, Pages 46–53
نویسندگان
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