Daqing Chen, Minghui Li, Wanzhu Wang, Danhua Ge and Xiaojun Chen
{"title":"用 RuCl3 修饰的中空 Co3O4 纳米球作为过氧化物酶模拟物,用于在中性 pH 值下灵敏测定硫化物离子","authors":"Daqing Chen, Minghui Li, Wanzhu Wang, Danhua Ge and Xiaojun Chen","doi":"10.1039/D4EN00569D","DOIUrl":null,"url":null,"abstract":"<p >Developing high-performance nanozymes at neutral pH is extremely necessary for the application of biological and water environmental systems. RuCl<small><sub>3</sub></small>-modified hollow Co<small><sub>3</sub></small>O<small><sub>4</sub></small> nanospheres (Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small> HNSs) were utilized to establish a colorimetric sensor for selective determination of sulfide ions (S<small><sup>2−</sup></small>). The hollow Co<small><sub>3</sub></small>O<small><sub>4</sub></small> nanospheres after doping of Ru<small><sup>3+</sup></small> provide a large surface area and more active sites, thereby boosting the electron transport and the affinity to the substrates. Specifically, the as-prepared Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small> HNSs exhibited remarkable peroxidase-like (POD-like) activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB under neutral pH conditions. Furthermore, the Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small>-based colorimetric sensor achieved a wide linear range (0.5–20 μM) and a low detection limit (0.051 μM) for S<small><sup>2−</sup></small> ion concentration, as well as good selectivity, reproducibility and practicability in sewage water. This research aims to boost the accuracy of S<small><sup>2−</sup></small> detection and shed light on application prospects in the water environmental fields.</p>","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":" 12","pages":" 4779-4787"},"PeriodicalIF":5.8000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hollow Co3O4 nanospheres modified with RuCl3 as peroxidase mimics for sensitive determination of sulfide ions at neutral pH†\",\"authors\":\"Daqing Chen, Minghui Li, Wanzhu Wang, Danhua Ge and Xiaojun Chen\",\"doi\":\"10.1039/D4EN00569D\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Developing high-performance nanozymes at neutral pH is extremely necessary for the application of biological and water environmental systems. RuCl<small><sub>3</sub></small>-modified hollow Co<small><sub>3</sub></small>O<small><sub>4</sub></small> nanospheres (Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small> HNSs) were utilized to establish a colorimetric sensor for selective determination of sulfide ions (S<small><sup>2−</sup></small>). The hollow Co<small><sub>3</sub></small>O<small><sub>4</sub></small> nanospheres after doping of Ru<small><sup>3+</sup></small> provide a large surface area and more active sites, thereby boosting the electron transport and the affinity to the substrates. Specifically, the as-prepared Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small> HNSs exhibited remarkable peroxidase-like (POD-like) activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB under neutral pH conditions. Furthermore, the Ru<small><sup>3+</sup></small>-Co<small><sub>3</sub></small>O<small><sub>4</sub></small>-based colorimetric sensor achieved a wide linear range (0.5–20 μM) and a low detection limit (0.051 μM) for S<small><sup>2−</sup></small> ion concentration, as well as good selectivity, reproducibility and practicability in sewage water. This research aims to boost the accuracy of S<small><sup>2−</sup></small> detection and shed light on application prospects in the water environmental fields.</p>\",\"PeriodicalId\":73,\"journal\":{\"name\":\"Environmental Science: Nano\",\"volume\":\" 12\",\"pages\":\" 4779-4787\"},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Science: Nano\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/en/d4en00569d\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science: Nano","FirstCategoryId":"6","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/en/d4en00569d","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}
Hollow Co3O4 nanospheres modified with RuCl3 as peroxidase mimics for sensitive determination of sulfide ions at neutral pH†
Developing high-performance nanozymes at neutral pH is extremely necessary for the application of biological and water environmental systems. RuCl3-modified hollow Co3O4 nanospheres (Ru3+-Co3O4 HNSs) were utilized to establish a colorimetric sensor for selective determination of sulfide ions (S2−). The hollow Co3O4 nanospheres after doping of Ru3+ provide a large surface area and more active sites, thereby boosting the electron transport and the affinity to the substrates. Specifically, the as-prepared Ru3+-Co3O4 HNSs exhibited remarkable peroxidase-like (POD-like) activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB under neutral pH conditions. Furthermore, the Ru3+-Co3O4-based colorimetric sensor achieved a wide linear range (0.5–20 μM) and a low detection limit (0.051 μM) for S2− ion concentration, as well as good selectivity, reproducibility and practicability in sewage water. This research aims to boost the accuracy of S2− detection and shed light on application prospects in the water environmental fields.
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