Non-enzymatic electrochemical sensor for the reliable determination of catechol using RuS2/WO3/MWCNT ternary composite

IF 5.8 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2025-06-24 DOI:10.1007/s42823-025-00939-x

Sreelekshmi, Beena Saraswathyamma

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Abstract

This work focuses on the development of an innovative detection platform utilizing a novel ternary composite of transition metal dichalcogenide ruthenium disulfide (RuS₂), tungsten trioxide (WO₃) and multi-walled carbon nanotubes (RuS₂/WO₃/MWCNT) for the purpose of detecting hazardous pollutant catechol. An augmented current response for catechol was acquired by the synergetic effect of ternary composite. The unique combination of these materials enhances the sensor’s electrochemical performance due to the excellent catalytic activity of RuS₂, redox properties of WO₃ and the high surface area and electrical conductivity provided by MWCNTs. Morphological and structural characterizations were done using different characterization methods. The increased electroactive surface area and fast electron transfer rate resulted by the adaptation of the working electrode leads to the development of a sensitive and selective sensor. The RuS₂/WO₃/MWCNT modified electrode exhibited remarkable sensitivity towards catechol determination with a wide linear detection range of 1.0–1028.0 µM and a modest low detection limit of 0.61 µM. The sensor demonstrated consistent performance in assessing the reproducibility and repeatability trials. The fabricated sensor gave reliable results and satisfactory recovery range when application on real-time sample analysis.

Graphical abstract

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基于RuS2/WO3/MWCNT三元复合材料的可靠测定儿茶酚的非酶电化学传感器

这项工作的重点是利用过渡金属二硫代二硫化钌（RuS2）、三氧化钨（WO3）和多壁碳纳米管（RuS2/WO3/MWCNT）的新型三元复合材料开发一种创新的检测平台，用于检测有害污染物儿茶酚。三元复合材料的协同效应使邻苯二酚的电流响应增强。由于RuS2的优异催化活性、WO3的氧化还原性能以及MWCNTs提供的高表面积和导电性，这些材料的独特组合增强了传感器的电化学性能。采用不同的表征方法进行了形态学和结构表征。由于工作电极的适应性增加了电活性表面积和快速的电子传递速率，导致了敏感和选择性传感器的发展。RuS2/WO3/MWCNT修饰电极对儿茶酚的检测具有显著的灵敏度，线性检测范围为1.0 ~ 1028.0µM，最低检测限为0.61µM。该传感器在评估再现性和可重复性试验中表现出一致的性能。该传感器应用于实时样品分析，结果可靠，回收率满意。图形抽象

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.