کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
218444 463201 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A facile fabrication of platinum nanoparticle-modified graphite pencil electrode for highly sensitive detection of hydrogen peroxide
ترجمه فارسی عنوان
تولید آسان از الکترودهای گرافیکی گرافیتی اصلاح شده با نانوذرات پلاتین برای تشخیص بسیار حساس پراکسید هیدروژن
کلمات کلیدی
نانوذرات پلاتین، الکترود مداد گرافیت، آماده سازی شیمیایی، آب اکسیژنه، تشخیص آمپرمترتری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• We developed a simple chemical method for the fabrication of PtNP-GPE.
• We tested the fabricated PtNP-GPE for the detection of hydrogen peroxide.
• We obtained all figures of merit for the developed PtNP-GPE.
• We tested the effect of potential interferences on the PtNP-GPE response.

A novel platinum nanoparticle-modified graphite pencil electrode (PtNP-GPE) for a non-enzymatic determination of H2O2 is proposed. The PtNP-GPE is prepared by heating a GPE in an aqueous solution of ammonium tetrachloroplatinate(II) and ascorbic acid at 75 °C for 15 min. Both unmodified and PtNP-GPE are characterized using field-emission-SEM and cyclic voltammetry. The PtNP-GPE showed better electrocatalytic properties toward the electrochemical redox reaction of H2O2 than that of the unmodified GPE. The PtNP-GPE amperometric response is tested at four different potentials (+0.7, +0.5, −0.2 and −0.3 V vs. Ag/AgCl reference electrode). Taking into consideration both the intensity of the amperometric response and detector stability, the applied potential of +0.5 V is the best among the tested potentials. The PtNP-GPE amperometric response of H2O2 at +0.5 V is linear from 10 to 110 μM (R2 = 0.999) with a detection limit of 3.6 μM.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 740, 1 March 2015, Pages 68–74
نویسندگان
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