Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Hydrogen: Jurnal Kependidikan Kimia
Miftahul Khair
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang,Jl.Prof. Dr.Hamka Air Tawar Barat, Padang, Indonesia
Chemistry Education

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Voltammetric Detection of Cu²⁺ Using a Napa Soil-Derived NiAl₂O₄/MWCNT-Modified Glassy Carbon Electrode Ihya Zakira Sani; Mawardi Mawardi; Desy Kurniawati; Miftahul Khair; Okta Suryani
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 3 (2026): June 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i3.21279

Abstract

Copper ions (Cu²⁺) are essential trace elements but may become toxic at elevated concentrations, requiring reliable monitoring methods. In this study, a NiAl₂O₄/MWCNT-modified glassy carbon electrode (GCE) derived from napa soil was developed for the voltammetric determination of Cu²⁺ ions. The modified electrode was prepared by combining NiAl₂O₄ synthesized from napa soil with multi-walled carbon nanotubes (MWCNTs) through a drop-casting technique. Electrochemical characterization demonstrated that the incorporation of NiAl₂O₄ and MWCNTs significantly enhanced the electrochemical performance of the electrode by improving electron-transfer efficiency and increasing the electroactive surface area. The modified electrode exhibited a strong voltammetric response toward Cu²⁺ ions, while HClO₄ was identified as the most suitable supporting electrolyte among the investigated media. Selectivity studies showed that Cu²⁺ remained detectable in the presence of Pb²⁺, although partial signal suppression was observed at higher Pb²⁺ concentrations. These findings indicate that the NiAl₂O₄/MWCNT-modified GCE is a promising low-cost and sustainable platform for Cu²⁺ determination in aqueous environments.
Co-Authors Desy Kurniawati Ihya Zakira Sani Mawardi Mawardi Okta Suryani