Selective and sensitive detection of 4-nitrophenol in ecological water samples based on terbium tungstate anchored with graphitic nitride

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-18 DOI:10.1002/jccs.202400086

Ganesh Abinaya Meenakshi, Subramanian Sakthinathan, Te-Wei Chiu

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Abstract

In this work, the Tb₂(WO₄)₃/C₃N₄ composite is for the electrochemical sensing of 4-nitrophenol (4-NP). Tb₂(WO₄)₃ was prepared by hydrothermal method. Tb₂(WO₄)₃ homogeneously functionalized with the g-C₃N₄ by a noncovalent π–π interaction. Besides, field emission scanning electron microscopy, x-ray diffraction studies, and energy-dispersive x-ray spectroscopy were utilized to characterize the prepared materials. Cyclic voltammetry and amperometry techniques were used to investigate the electrocatalytic behavior of prepared electrode materials. The reduction in 4-NP exhibits high electrocatalytic activity, with best at working voltage with a linear response range of up to 1200 μM. Moreover, the SPCE/C₃N₄/Tb₂(WO₄)₃ electrode exhibited a detection limit and sensitivity of 0.23 μM and 1.72 μAμM⁻¹ cm⁻², respectively. The electrode provides a workable platform for the analysis of 4-NP in water samples and is highly reproducible and stable.

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基于氮化石墨锚定的钨酸铽对生态水样中 4-硝基苯酚的选择性灵敏检测

在这项研究中，Tb2(WO4)3/C3N4 复合材料用于 4-硝基苯酚（4-NP）的电化学传感。Tb2(WO4)3 是通过水热法制备的。Tb2(WO4)3 与 g-C3N4 通过非共价的 π-π 相互作用而均匀地官能化。此外，还利用场发射扫描电子显微镜、X 射线衍射研究和能量色散 X 射线光谱来表征制备的材料。利用循环伏安法和安培计技术研究了所制备电极材料的电催化行为。4-NP 的还原表现出很高的电催化活性，在工作电压下的线性响应范围最高可达 1200 μM。此外，SPCE/C3N4/Tb2(WO4)3 电极的检测限和灵敏度分别为 0.23 μM 和 1.72 μAμM-1 cm-2。该电极为分析水样中的 4-NP 提供了一个可行的平台，并且具有高度的重现性和稳定性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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