Ultrasensitive voltammetric sensor based on ferrocenium tetrachloroferrate for determination of manganese(II) in water pollutant

IF 4.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2025-03-13 DOI:10.1016/j.matchemphys.2025.130725

Alwi Nofriandi , Yulkifli , Illyas Md Isa , Norhayati Hashim , Mohamad Idris Saidin , Mohamad Syahrizal Ahmad , Indang Dewata , Yohandri , Mawardi , Alizar , Ratno Nuryadi

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Abstract

This study presents the development and characterization of a multi-walled carbon nanotubes (MWCNTs)-based paste electrode modified with ferrocenium tetrachloroferrate (FTCF) for detecting of manganese(II) ions, Mn(II) in environmental applications. The modified material was characterized using Fourier transform infrared spectroscopy, X-ray diffraction, and field emission scanning electron microscopy. Electrochemical performance was evaluated through cyclic voltammetry, electrochemical impedance spectroscopy, and chronocoulometry. Square wave voltammetry was employed for quantitative detection of Mn(II). The MWCNTs/FTCF electrode demonstrated a linear detection range from 1.0 nM to 0.1 μM and 1.0 μM to 0.1 mM, with correlation coefficients (R²) of 0.9865 and 0.9762, respectively, and a detection limit of 0.275 nM. Interference study towards 11 competing ions, each at 10 folds concentration of Mn(II) shown an interference levels below 15 %, indicating a good selectivity. Additionally, the electrode exhibited excellent stability and reproducibility. The proposed electrode has been applied to determine Mn(II) in real water samples and the results shown that recovery values from 93 % to 113 %. Hence, it was suggested as alternative tool for the analysis of Mn(II) in environmental study.

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基于四氯酸二茂铁的超灵敏伏安传感器测定水污染物中锰

本研究介绍了基于多壁碳纳米管（MWCNTs）的糊状电极的开发和表征，该电极用四氯化铁（FTCF）修饰，用于检测环境应用中的锰（II）离子（Mn（II））。使用傅立叶变换红外光谱、X 射线衍射和场发射扫描电子显微镜对改性材料进行了表征。电化学性能通过循环伏安法、电化学阻抗光谱法和计时器进行了评估。方波伏安法用于定量检测锰（II）。MWCNTs/FTCF 电极的线性检测范围为 1.0 nM 至 0.1 μM 和 1.0 μM 至 0.1 mM，相关系数 (R2) 分别为 0.9865 和 0.9762，检测限为 0.275 nM。对 11 种竞争离子（每种离子的 Mn（II）浓度为 10 倍）的干扰研究表明，干扰水平低于 15%，这表明电极具有良好的选择性。此外，该电极还具有出色的稳定性和再现性。提议的电极已被用于测定真实水样中的锰（II），结果显示回收率从 93% 到 113%。因此，建议将其作为环境研究中分析锰（II）的替代工具。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.