Dong Xiang, Liping Zhao, Yue Wang, Xiuze Li, Xu Sun, Jiukai Yang, Han Liu, Cen Wan
{"title":"A Highly Sensitive Non-Enzymatic Glucose Electrochemical Sensor Electrode Material of CuO Nanospheres/Activated Carbon Composites","authors":"Dong Xiang, Liping Zhao, Yue Wang, Xiuze Li, Xu Sun, Jiukai Yang, Han Liu, Cen Wan","doi":"10.1134/s1023193524020083","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The electrode materials of copper oxide (CuO) nanospheres composite activated carbon (AC) (CuO/AC) were prepared by a hydrothermal method. CuO/AC and chitosan (CTS) were immobilized on the surface of the glassy carbon electrode (GCE) to construct a non-enzymatic glucose electrochemical sensor (CuO/AC + CTS + GCE). The results show that an average particle size of spherical CuO is about 500 nm, which evenly distribute on the surface of AC. The nanocomposites have a large surface area, more active sites, and higher electron transfer ability. CuO/AC + CTS + GCE-2 with a Cu<sup>2+</sup> and AC molar ratio of 1 : 2 enhanced electrocatalytic activity toward the oxidation of glucose in alkaline media. It displays a fast response to glucose with a high sensitivity of 2073.6 μA mM<sup>–1</sup> cm<sup>–2</sup>, a good linear concentration range from 0.2 to 2400 μM, a low detection limit of 0.1 μΜ (<i>S</i>/<i>N</i> = 3), and fast current response of 5 s. The sensor is highly selective to glucose in the presence of commonly interfering species. CuO/AC as electrode materials has the potential application for a cost-effective, non-enzymatic glucose electrochemical sensor.</p>","PeriodicalId":760,"journal":{"name":"Russian Journal of Electrochemistry","volume":"44 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1134/s1023193524020083","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
The electrode materials of copper oxide (CuO) nanospheres composite activated carbon (AC) (CuO/AC) were prepared by a hydrothermal method. CuO/AC and chitosan (CTS) were immobilized on the surface of the glassy carbon electrode (GCE) to construct a non-enzymatic glucose electrochemical sensor (CuO/AC + CTS + GCE). The results show that an average particle size of spherical CuO is about 500 nm, which evenly distribute on the surface of AC. The nanocomposites have a large surface area, more active sites, and higher electron transfer ability. CuO/AC + CTS + GCE-2 with a Cu2+ and AC molar ratio of 1 : 2 enhanced electrocatalytic activity toward the oxidation of glucose in alkaline media. It displays a fast response to glucose with a high sensitivity of 2073.6 μA mM–1 cm–2, a good linear concentration range from 0.2 to 2400 μM, a low detection limit of 0.1 μΜ (S/N = 3), and fast current response of 5 s. The sensor is highly selective to glucose in the presence of commonly interfering species. CuO/AC as electrode materials has the potential application for a cost-effective, non-enzymatic glucose electrochemical sensor.
期刊介绍：
Russian Journal of Electrochemistry is a journal that covers all aspects of research in modern electrochemistry. The journal welcomes submissions in English or Russian regardless of country and nationality of authors.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
