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基于镍铝纳米层状双氢氧化物的灵敏电化学传感器的制备及其对邻苯二酚的定量检测

Fabrication and evaluation of a sensitive electrochemical sensor based on double hydroxide in nickel-aluminum nanolayers for the quantification of pyrocatechol.

作者信息

Khan Mir Mehran, Ghumro Tania, Fatima Nahal, Memon Saima Q, Solangi Amber R, López-Maldonado José Trinidad, Cornejo-Bravo José Manuel, López-Maldonado Eduardo Alberto

机构信息

National Centre of Excellence in Analytical Chemistry, University of Sindh Jamshoro 76080 Pakistan

Department of Human and Rehabilitation Science, Begum Nusrat Bhutto Women University Sukkur Pakistan.

出版信息

RSC Adv. 2024 Dec 10;14(52):38864-38871. doi: 10.1039/d4ra07716d. eCollection 2024 Dec 3.

DOI:10.1039/d4ra07716d
PMID:39659599
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11629106/
Abstract

Pyrocatechol, also known as catechol, is a commonly used compound in various industries; however, it can be toxic when used in high concentrations. Therefore, developing a highly sensitive electrochemical sensor for detecting pyrocatechol is important. Our study utilized a co-precipitation technique to fabricate a nanostructured nickel aluminum layered double hydroxide (Ni-Al-LDH). This material was thoroughly analyzed using advanced techniques to confirm its functionality, crystallinity, and morphology. Subsequently, Ni-Al-LDH was employed as an electrocatalyst for the detection of pyrocatechol in actual samples. The modified electrode showed significant responsiveness to pyrocatechol under specific conditions, with a detection limit of 1 nM. This sensor demonstrated analytical potential for the sensitive determination of pyrocatechol across a range of real samples.

摘要

邻苯二酚，也称为儿茶酚，是各种行业中常用的化合物；然而，高浓度使用时它可能有毒。因此，开发一种用于检测邻苯二酚的高灵敏度电化学传感器很重要。我们的研究利用共沉淀技术制备了一种纳米结构的镍铝层状双氢氧化物（Ni-Al-LDH）。使用先进技术对该材料进行了全面分析，以确认其功能、结晶度和形态。随后，将Ni-Al-LDH用作电催化剂来检测实际样品中的邻苯二酚。修饰电极在特定条件下对邻苯二酚表现出显著的响应性，检测限为1 nM。该传感器展示了在一系列实际样品中灵敏测定邻苯二酚的分析潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/48a8/11629106/3905af6b4d01/d4ra07716d-f8.jpg
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