Taimur Ali, Nimra Bashir, Tajamal Hussain and Adeel Afzal*,
{"title":"地下水中阴离子染料的基团选择性识别:用于工业规模废水监测和控制排放的超灵敏电化学传感器","authors":"Taimur Ali, Nimra Bashir, Tajamal Hussain and Adeel Afzal*, ","doi":"10.1021/acssusresmgt.4c00538","DOIUrl":null,"url":null,"abstract":"<p >Unchecked and uncontrolled release of industrial effluents causes water pollution and poses a major threat to human health and the environment. For industries and environmental authorities, it is not viable to monitor each pollutant individually due to the complexity, cost, and time constraints involved in employing separate sensors or methods for each contaminant. To address this issue, we present the development of the first-of-its-kind, group-selective electrochemical sensors for the industrial-scale monitoring of <i>anionic</i> or <i>acid</i> dyes, a class of colored organic compounds that dissociate into anions in water, primarily sulfonated azo dyes. The electrochemical sensors employ vanadium-doped graphitic carbon nitride nanosheets (V-gCN) and modified pencil graphite electrodes to provide a cost-effective and sustainable solution with high sensitivity and group selectivity. The 5%V-gCN sensor boasts superior electrochemical properties compared to both undoped gCN and 10% V-gCN sensors. The 5%V-gCN sensors show outstanding performance in detecting anionic dyes like erichrome black T (EBT), methyl orange (MO), and congo red (CR) in aqueous solutions, mixtures, and groundwater. These sensors deliver excellent reliability, high sensitivity (0.44–1.16 μA cm<sup>–2</sup> nM<sup>–1</sup>), and sub-nanomolar (< 1 nM) limit of detection. Group selectivity is demonstrated by testing cationic dyes such as methylene blue (MB) and rhodamine B (RhB). Moreover, the 5%V-gCN sensor exhibits excellent operational stability, reproducibility, and recyclability. This work demonstrates the potential of a 5%V-gCN sensor for environmental monitoring of anionic dyes and controlled release of industrial effluents to ensure water quality for future generations.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 8","pages":"1363–1372"},"PeriodicalIF":0.0000,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Group-Selective Recognition of Anionic Dyes in Groundwater: Ultrasensitive Electrochemical Sensors for Industrial-Scale Monitoring and Controlled Release of Effluents\",\"authors\":\"Taimur Ali, Nimra Bashir, Tajamal Hussain and Adeel Afzal*, \",\"doi\":\"10.1021/acssusresmgt.4c00538\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Unchecked and uncontrolled release of industrial effluents causes water pollution and poses a major threat to human health and the environment. For industries and environmental authorities, it is not viable to monitor each pollutant individually due to the complexity, cost, and time constraints involved in employing separate sensors or methods for each contaminant. To address this issue, we present the development of the first-of-its-kind, group-selective electrochemical sensors for the industrial-scale monitoring of <i>anionic</i> or <i>acid</i> dyes, a class of colored organic compounds that dissociate into anions in water, primarily sulfonated azo dyes. The electrochemical sensors employ vanadium-doped graphitic carbon nitride nanosheets (V-gCN) and modified pencil graphite electrodes to provide a cost-effective and sustainable solution with high sensitivity and group selectivity. The 5%V-gCN sensor boasts superior electrochemical properties compared to both undoped gCN and 10% V-gCN sensors. The 5%V-gCN sensors show outstanding performance in detecting anionic dyes like erichrome black T (EBT), methyl orange (MO), and congo red (CR) in aqueous solutions, mixtures, and groundwater. These sensors deliver excellent reliability, high sensitivity (0.44–1.16 μA cm<sup>–2</sup> nM<sup>–1</sup>), and sub-nanomolar (< 1 nM) limit of detection. Group selectivity is demonstrated by testing cationic dyes such as methylene blue (MB) and rhodamine B (RhB). Moreover, the 5%V-gCN sensor exhibits excellent operational stability, reproducibility, and recyclability. This work demonstrates the potential of a 5%V-gCN sensor for environmental monitoring of anionic dyes and controlled release of industrial effluents to ensure water quality for future generations.</p>\",\"PeriodicalId\":100015,\"journal\":{\"name\":\"ACS Sustainable Resource Management\",\"volume\":\"2 8\",\"pages\":\"1363–1372\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-07-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Sustainable Resource Management\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acssusresmgt.4c00538\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Sustainable Resource Management","FirstCategoryId":"1085","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acssusresmgt.4c00538","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Group-Selective Recognition of Anionic Dyes in Groundwater: Ultrasensitive Electrochemical Sensors for Industrial-Scale Monitoring and Controlled Release of Effluents
Unchecked and uncontrolled release of industrial effluents causes water pollution and poses a major threat to human health and the environment. For industries and environmental authorities, it is not viable to monitor each pollutant individually due to the complexity, cost, and time constraints involved in employing separate sensors or methods for each contaminant. To address this issue, we present the development of the first-of-its-kind, group-selective electrochemical sensors for the industrial-scale monitoring of anionic or acid dyes, a class of colored organic compounds that dissociate into anions in water, primarily sulfonated azo dyes. The electrochemical sensors employ vanadium-doped graphitic carbon nitride nanosheets (V-gCN) and modified pencil graphite electrodes to provide a cost-effective and sustainable solution with high sensitivity and group selectivity. The 5%V-gCN sensor boasts superior electrochemical properties compared to both undoped gCN and 10% V-gCN sensors. The 5%V-gCN sensors show outstanding performance in detecting anionic dyes like erichrome black T (EBT), methyl orange (MO), and congo red (CR) in aqueous solutions, mixtures, and groundwater. These sensors deliver excellent reliability, high sensitivity (0.44–1.16 μA cm–2 nM–1), and sub-nanomolar (< 1 nM) limit of detection. Group selectivity is demonstrated by testing cationic dyes such as methylene blue (MB) and rhodamine B (RhB). Moreover, the 5%V-gCN sensor exhibits excellent operational stability, reproducibility, and recyclability. This work demonstrates the potential of a 5%V-gCN sensor for environmental monitoring of anionic dyes and controlled release of industrial effluents to ensure water quality for future generations.