Fabrication of a novel electrochemical sensor based on tin disulfide/multi-walled carbon nanotunbes-modified electrode for rutin determination in natural vegetation
文献类型: 外文期刊
第一作者: Liang, Ying
作者: Liang, Ying;Huang, Zhipeng;Wang, Hongmei;Yao, Chunxia;Si, Wenshuai;Liang, Ying;Zhang, Lingyu;Cai, Xinru;Zhang, Li;Xu, Yixin;Wang, Hongmei;Shi, Guoyue
作者机构:
关键词: Tin disulfide; Multi-walled carbon nan-otubes; Electrochemical sensor; Rutin
期刊名称:ARABIAN JOURNAL OF CHEMISTRY ( 影响因子:6.0; 五年影响因子:5.9 )
ISSN: 1878-5352
年卷期: 2023 年 16 卷 5 期
页码:
收录情况: SCI
摘要: A tin disulfide and multi-walled carbon nanotube (SnS2/CNTs) electrochemical sensor was constructed for the sensitive and selective determination of rutin in plants. Tin disulfide nanoflowers with various particle sizes were prepared by controlling the reaction time and compos-ited with multi-walled CNTs. The morphology, crystal structure, and chemical composition of these SnS2/CNTs composites were characterized using XRD, XPS, and SEM-EDS. Results illustrated that the SnS2/CNTs had a large specific surface area, good conductivity, and remarkable electrocat-alytic performance. The pH of the buffer solution, the scanning rate, and the amount of modified material were also optimized for the rapid detection of rutin. A 2-electron-2-proton mechanism, involving a few rapid and consecutive stages, was speculated to occur during rutin oxidation, based on the observed slope of-53 mV/pH. There was an appreciable linear relationship between the reductive peak current from DPV and the rutin concentration, ranging from 0.005-0.05 mmol/L and 0.1-6 mmol/L, with a detection limit of 0.22 nmol/L (S/N = 3). The sensor also demonstrated good selectivity, excellent sensitivity, and reproducibility when analyzing rutin in real plant samples, with satisfactory recovery, and was also highly consistent with results of HPLC, and thus could be used to evaluate the medicinal value of natural vegetation.(c) 2023 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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