{"title":"A novel electrochemical sensor for simultaneous determination of 2,4-dichlorophenol and 3-chlorophenol","authors":"Yongqi Feng, Shuting Luan, Jiaxin Yi, Yi Zhang, Xuchun Li, Shiwen Lv, Yanqing Cong","doi":"10.1039/d4en00588k","DOIUrl":null,"url":null,"abstract":"Electrochemical sensors have garnered considerable interest from researchers due to their ability to quickly and accurately detect chlorophenols, which are widespread environmental pollutants with significant health risks. This study presents a novel hydrophilic carbon cloth electrode modified with Ce/Ni/Cu layered double hydroxide (CeNiCu-LDH@CC) for detecting endocrine disruptors 2,4-dichlorophenol (2,4-DCP) and 3-chlorophenol (3-CP). Using a Ce/Ni metal–organic framework (CeNi-MOF) as a precursor, the material is doped with Cu(<small>II</small>) and then alkali-etched into LDH. This process enhances the adsorption sites and surface area of the material, resulting in an electrochemically active surface area (ECSA) of 9.68 cm<small><sup>2</sup></small> for CeNiCu-LDH@CC. The electrochemical tests reveal that Cu(<small>II</small>) doping improves the conductivity of the sensor, enhancing its performance for chlorophenol detection. The sensor detects 2,4-DCP and 3-CP simultaneously with a linear range of 1 to 100 μM and detection limits of 0.197 μM and 0.286 μM, respectively. Moreover, the CeNiCu-LDH@CC sensor demonstrates high recovery rates in real sample tests, indicating its practical application potential. In summary, the CeNiCu-LDH@CC sensor developed in this study shows exceptional sensing capabilities, stability, and selectivity for 2,4-DCP and 3-CP, making it suitable for simultaneous detection of these compounds.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science: Nano","FirstCategoryId":"6","ListUrlMain":"https://doi.org/10.1039/d4en00588k","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Electrochemical sensors have garnered considerable interest from researchers due to their ability to quickly and accurately detect chlorophenols, which are widespread environmental pollutants with significant health risks. This study presents a novel hydrophilic carbon cloth electrode modified with Ce/Ni/Cu layered double hydroxide (CeNiCu-LDH@CC) for detecting endocrine disruptors 2,4-dichlorophenol (2,4-DCP) and 3-chlorophenol (3-CP). Using a Ce/Ni metal–organic framework (CeNi-MOF) as a precursor, the material is doped with Cu(II) and then alkali-etched into LDH. This process enhances the adsorption sites and surface area of the material, resulting in an electrochemically active surface area (ECSA) of 9.68 cm2 for CeNiCu-LDH@CC. The electrochemical tests reveal that Cu(II) doping improves the conductivity of the sensor, enhancing its performance for chlorophenol detection. The sensor detects 2,4-DCP and 3-CP simultaneously with a linear range of 1 to 100 μM and detection limits of 0.197 μM and 0.286 μM, respectively. Moreover, the CeNiCu-LDH@CC sensor demonstrates high recovery rates in real sample tests, indicating its practical application potential. In summary, the CeNiCu-LDH@CC sensor developed in this study shows exceptional sensing capabilities, stability, and selectivity for 2,4-DCP and 3-CP, making it suitable for simultaneous detection of these compounds.
期刊介绍:
Environmental Science: Nano serves as a comprehensive and high-impact peer-reviewed source of information on the design and demonstration of engineered nanomaterials for environment-based applications. It also covers the interactions between engineered, natural, and incidental nanomaterials with biological and environmental systems. This scope includes, but is not limited to, the following topic areas:
Novel nanomaterial-based applications for water, air, soil, food, and energy sustainability
Nanomaterial interactions with biological systems and nanotoxicology
Environmental fate, reactivity, and transformations of nanoscale materials
Nanoscale processes in the environment
Sustainable nanotechnology including rational nanomaterial design, life cycle assessment, risk/benefit analysis