کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59569 1419439 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde
ترجمه فارسی عنوان
نانوذرات نقره تزئین الکترودهای کربنی پلی (2-آمینیدیفنیلآمین) به عنوان یک الکتروکاتالیست ساده و کارآمد برای اکسیداسیون فرمالدئید
کلمات کلیدی
الکترو کاتالیزور، نانوذرات نقره، فرمالدئید، 2-آمینو دی فنیلامین، الکترودهای رب کربن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی

This work describes the promising activity of silver nanoparticles on the surface of a poly(2-amino diphenylamine) modified carbon paste electrode (CPE) towards formaldehyde oxidation. Electrodeposition of the conducting polymer film on the CPE was carried out using consecutive cyclic voltammetry in an aqueous solution of 2-aminodiphenylamine and HCl. Nitrogen groups in the polymer backbone had a Ag ion accumulating effect, allowing Ag nanoparticles to be electrochemically deposited on the surface of the electrode. The electrochemical and morphological characteristics of the modified electrode were investigated. The electro-oxidation of formaldehyde on the surface of electrode was studied using cyclic voltammetry and chronoamperometry in aqueous solution of 0.1 mol/L NaOH. The electro-oxidation onset potential was found to be around −0.4 V, which is unique in the literature. The effect of different concentrations of formaldehyde on the electrocatalytic activity of the modified electrode was investigated. Finally, the diffusion coefficient of formaldehyde in alkaline media was calculated to be 0.47 × 10−6 cm2/s using chronoamperometry.

Graphical AbstractAg nanoparticles were incorporated on poly-2ADPA modified carbon paste electrode and their electrochemical behavior in alkaline media was investigated. The Ag nanoparticles exhibited promising electrocatalytic activity for formaldehyde oxidation.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 35, Issue 9, September 2014, Pages 1565–1570
نویسندگان
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