Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde

doi:10.1016/S1872-2067(14)60115-7

催化学报 ›› 2014, Vol. 35 ›› Issue (9): 1565-1570.DOI: 10.1016/S1872-2067(14)60115-7

Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde

Reza Ojani, Saeid Safshekan, Jahan-Bakhsh Raoof

Electroanalytical Chemistry Research Laboratory, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

收稿日期:2014-01-31 修回日期:2014-04-16 出版日期:2014-08-19 发布日期:2014-08-22
通讯作者: Reza Ojani
基金资助:
This work was supported by Iranian Nanotechnology Society.

Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde

Reza Ojani, Saeid Safshekan, Jahan-Bakhsh Raoof

Electroanalytical Chemistry Research Laboratory, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

Received:2014-01-31 Revised:2014-04-16 Online:2014-08-19 Published:2014-08-22
Supported by:
This work was supported by Iranian Nanotechnology Society.

摘要/Abstract

摘要：

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.

关键词: Electrocatalyst, Silver nanoparticle, Formaldehyde, 2-Aminodiphenylamine, Carbon paste electrode

Abstract:

Key words: Electrocatalyst, Silver nanoparticle, Formaldehyde, 2-Aminodiphenylamine, Carbon paste electrode

Reza Ojani, Saeid Safshekan, Jahan-Bakhsh Raoof. Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde[J]. 催化学报, 2014, 35(9): 1565-1570.

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Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde

Silver nanoparticle decorated poly(2-aminodiphenylamine) modified carbon paste electrode as a simple and efficient electrocatalyst for oxidation of formaldehyde

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