{"title":"High-performance electrocatalysts based core-shell SWCNHs@ZIF-67 heterostructure for ultrasensitive H2O2 sensing","authors":"Yile Hu, Jingge Shi, Zifan Wang, Xiaopeng Wang, Yujia Lai, Yanke Chen, Zhiqiang Wei, Hui Yang","doi":"10.1016/j.ijoes.2024.100689","DOIUrl":null,"url":null,"abstract":"<div><p>ZIF-67 is a Co-based zeolitic imidazolate framework material with both redox metal active sites and organic functional groups. Single walled carbon nanohorns (SWCNHs) is a novel horn-shaped carbon nanomaterial with abundant carbon active sites and high conductivity. SWCNHs@ZIF-67 heterostructure composites were prepared by environmental-friendly method with ZIF-67 as core and SWCNHs as shell, then were fixed on the surface of glassy carbon electrode (GCE) to obtain the electrochemical sensing platform for detecting H<sub>2</sub>O<sub>2</sub>. The as-proposed sensor (SWCNHs@ZIF-67/GCE) demonstrates excellent electrocatalytic performance for the reduction of H<sub>2</sub>O<sub>2</sub> with two linearity scopes (0.50–150 µM, 150–400 µM) and a low detection limit of 0.15 μM, which is attributed to the synergistic electrocatalytic effect between ZIF-67 and SWCNHs. The as-fabricated sensor was satisfactorily used for H<sub>2</sub>O<sub>2</sub> analysis in plasma samples, revealing an immense potential application in vitro assay of H<sub>2</sub>O<sub>2</sub>.</p></div>","PeriodicalId":13872,"journal":{"name":"International Journal of Electrochemical Science","volume":"19 8","pages":"Article 100689"},"PeriodicalIF":1.3000,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S145239812400230X/pdfft?md5=9bb2471d81ef9d6b7ed66915db63bec3&pid=1-s2.0-S145239812400230X-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Electrochemical Science","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S145239812400230X","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
ZIF-67 is a Co-based zeolitic imidazolate framework material with both redox metal active sites and organic functional groups. Single walled carbon nanohorns (SWCNHs) is a novel horn-shaped carbon nanomaterial with abundant carbon active sites and high conductivity. SWCNHs@ZIF-67 heterostructure composites were prepared by environmental-friendly method with ZIF-67 as core and SWCNHs as shell, then were fixed on the surface of glassy carbon electrode (GCE) to obtain the electrochemical sensing platform for detecting H2O2. The as-proposed sensor (SWCNHs@ZIF-67/GCE) demonstrates excellent electrocatalytic performance for the reduction of H2O2 with two linearity scopes (0.50–150 µM, 150–400 µM) and a low detection limit of 0.15 μM, which is attributed to the synergistic electrocatalytic effect between ZIF-67 and SWCNHs. The as-fabricated sensor was satisfactorily used for H2O2 analysis in plasma samples, revealing an immense potential application in vitro assay of H2O2.
期刊介绍:
International Journal of Electrochemical Science is a peer-reviewed, open access journal that publishes original research articles, short communications as well as review articles in all areas of electrochemistry: Scope - Theoretical and Computational Electrochemistry - Processes on Electrodes - Electroanalytical Chemistry and Sensor Science - Corrosion - Electrochemical Energy Conversion and Storage - Electrochemical Engineering - Coatings - Electrochemical Synthesis - Bioelectrochemistry - Molecular Electrochemistry