Côte科特迪瓦粘土材料的表征:电化学分析的可能应用

Segneninhintenin Bakary Soro, M. Coulibaly, Legre Paul Gauly, Seiny Roger N’Dri, Ali Sanou, A. Trokourey
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摘要

粘土矿物作为电极改性剂的应用是基于其独特的结构和性能。在这项研究中,来自Côte科特迪瓦不同地区的粘土被表征为它们在开发电化学传感器方面的潜在用途。通过x射线衍射(XRD)、扫描电子显微镜(SEM)、能量色散x射线能谱(EDS)作图分析、傅里叶变换红外光谱(FTIR)和x射线荧光(XRF)对粘土样品进行了分析。XRD、FTIR、SEM和XRF分析结果表明,高岭石是样品的主要成分矿相。然后将这些粘土作为改性剂制备改性碳糊电极,并通过循环伏安法研究了铁/亚铁氰化物在改性电极上的电化学行为。由粘土和碳糊制备的复合电极表现出明确的铁/亚铁氰化物氧化还原峰,比裸碳糊电极更敏感。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization of Clay Materials from Côte d’Ivoire: Possible Application for the Electrochemical Analysis
The utilization of clay minerals as electrode modifiers is based on their unique structure and properties. In this study, clays from various regions of Côte d'Ivoire were characterized for their potential use in developing electrochemical sensors. The clay samples underwent analysis via X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) mapping analysis, Fourier transform infrared spectroscopy (FTIR), and X-ray fluorescence (XRF). Results from XRD, FTIR, SEM, and XRF indicated that kaolinite was the primary component mineral phase in all samples. These clays were then employed as modifying agents to prepare modified carbon paste electrodes, and the electrochemical behavior of ferri/ferrocyanide was studied via cyclic voltammetry on the modified electrodes. The composite electrodes generated from clays and carbon pastes exhibited a well-defined redox peak of ferri/ferrocyanide and appeared to be more sensitive than bare carbon paste electrodes.
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