POLYPYRROLE COATED CELLULOSIC SUBSTRATE MODIFIED BY COPPER OXIDE AS ELECTRODE FOR NITRATE ELECTROREDUCTION

被引：15
作者：
Hamam, A. [1 ,2 ]
Oukil, D. [1 ]
Dib, A. [1 ]
Hammache, H. [1 ]
Makhloufi, L. [1 ]
Saidani, B. [1 ]
机构：
[1] Univ Bejaia, Fac Technol, Corros & Valorisat Energet LECVE, Lab Electrochim, Bejaia 06000, Algeria
[2] URASM CSC, Welding & Non Destruct Testing Res Ctr CSC, Siderurgy & Met Res Unit, Annaba 23000, Algeria
来源：
SURFACE REVIEW AND LETTERS | 2015年 / 22卷 / 05期
关键词：
Polypyrrole; cellulosic; CuO; electrocatalysis; nitrate; ELECTROCATALYTIC REDUCTION; ELECTROANALYTICAL DETERMINATION; ELECTROCHEMICAL REDUCTION; FERROCYANIDE IONS; IRON SUBSTRATE; THIN-FILMS; NANOPARTICLES; ACID; CEMENTATION; DEPOSITION;
D O I：
10.1142/S0218625X15500651
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The aim of this work is to synthesize polypyrrole (PPy) films on nonconducting cellulosic substrate and modified by copper oxide particles for use in the nitrate electroreduction process. Firstly, the chemical polymerization of polypyrrole onto cellulosic substrate is conducted by using FeCl3 as an oxidant and pyrrole as monomer. The thickness and topography of the different PPy films obtained were estimated using a profilometer apparatus. The electrochemical reactivity of the obtained electrodes was tested by voltamperometry technique and electrochemical impedance spectroscopy. Secondly, the modification of the PPy film surface by incorporation of copper oxide particles is conducted by applying a galvanostatic procedure from a CuCl2 solution. The SEM, EDX and XRD analysis showed the presence of CuO particles in the polymer films with dimensions less than 50 nm. From cyclic voltamperometry experiments, the composite activity for the nitrate electroreduction reaction was evaluated and the peak of nitrate reduction is found to vary linearly with initial nitrate concentration.
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页数：11
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