Electrochemical sensing platform using reduced graphene oxide and Sn MOF-derived hollow cubic composites for sensitive detection of catechol in environmental water samples

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL Talanta Pub Date : 2024-07-22 DOI:10.1016/j.talanta.2024.126602

引用次数: 0

Abstract

Catechol, a polyphenolic molecule and significant organic chemical intermediate, is a highly dangerous environmental contaminant due to its unpredictable nature and potential harm to both humans and the environment. This study presents the development of Sn MOF@rGO-650, identified as a hollow cube by SEM and TEM, created by carbonizing rGO on the surface of Sn MOF after in situ encapsulation. The Sn MOF@rGO-650 modified glassy carbon electrode was successfully constructed for the electrochemical detection of catechol. Under optimal conditions, the sensor exhibited a detection limit of 33 nM, a linear range of 0.20 μM–28 μM, and good long-term stability and reproducibility. This work proves for the first time that Sn MOF@rGO-650 composites can effectively detect catechol in real environmental water samples, achieving recoveries between 95.7 % and 104.8 %, and is validated in UV spectroscopy, which highlights its potential for practical applications.

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使用还原氧化石墨烯和 Sn MOF 衍生的中空立方体复合材料的电化学传感平台，用于灵敏检测环境水样中的邻苯二酚。

儿茶酚是一种多酚分子和重要的有机化学中间体，由于其不可预测的性质以及对人类和环境的潜在危害，它是一种高度危险的环境污染物。本研究介绍了 Sn MOF@rGO-650 的开发过程，通过扫描电子显微镜（SEM）和电子显微镜（TEM）识别，该产品是通过原位封装后在 Sn MOF 表面碳化 rGO 而形成的空心立方体。成功构建的 Sn MOF@rGO-650 改性玻璃碳电极可用于儿茶酚的电化学检测。在最佳条件下，该传感器的检测限为 33 nM，线性范围为 0.20 μM-28 μM，并具有良好的长期稳定性和重现性。这项工作首次证明了 Sn MOF@rGO-650 复合材料能有效检测真实环境水样中的邻苯二酚，回收率在 95.7 % 到 104.8 % 之间，并在紫外光谱中得到了验证，突出了其实际应用的潜力。

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来源期刊

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.