Skip to Main content Skip to Navigation
Journal articles

Synthesis of nanostructured ZnO/copper electrodes for nitrate electroreduction

Abstract : In this work, ZnO thin films were synthesized on the surface of copper electrodes by an electrochemical method at different deposition potentials-0.6,-0.8,-1 and-1,2 V versus SCE. The as-prepared ZnO modified Cu electrodes (ZnO/Cu) have been employed for electrocatalytic nitrate reduction under neutral pH (pH =6.8) condition in 0.1 M KNO 3 using cyclic voltammetry and amperometry techniques. The electrode surface and structure were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. The effects of the electrodeposition potential and time on the morphology, structure and electrocatalytic properties were studied. The results show that under optimized ZnO electrodeposition conditions, the ZnO/Cu electrode exhibits interesting electrocatalytic performance in nitrate reduction. A well defined and reproducible peak with maximum current density was obtained for ZnO/Cu electrode elaborated at-1V for 20 min electrodeposition time. Kinetic study by chronoamperometry is indicative of ammonia formation.
Document type :
Journal articles
Complete list of metadatas

Cited literature [21 references]  Display  Hide  Download

https://hal-amu.archives-ouvertes.fr/hal-01674713
Contributor : Marielle Eyraud <>
Submitted on : Wednesday, January 3, 2018 - 2:51:11 PM
Last modification on : Monday, January 29, 2018 - 4:26:02 PM
Long-term archiving on: : Thursday, May 3, 2018 - 6:07:48 AM

File

desalination-water tt- ZnO Cu-...
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01674713, version 1

Collections

Citation

Nadia Ait-Ahmed, H. Hammache, Marielle Eyraud, L. Makhloufi, N. Gabouze. Synthesis of nanostructured ZnO/copper electrodes for nitrate electroreduction. Desalination and Water Treatment, FHF, 2017. ⟨hal-01674713⟩

Share

Metrics

Record views

231

Files downloads

335