芦丁
堆积
石墨烯
化学
异质结
电化学
检出限
电化学气体传感器
电极
纳米技术
化学工程
光电子学
色谱法
材料科学
抗氧化剂
有机化学
物理化学
工程类
作者
Yanmei Shi,Kai Hu,Lin Mei,Liqin Chao,Mingxia Wu,Zhihong Chen,Xiangxiang Wu,Jun Qiao,Pingsheng Zhu,Mingsan Miao,Sisen Zhang
出处
期刊:Talanta
[Elsevier]
日期:2024-04-01
卷期号:270: 125548-125548
被引量:1
标识
DOI:10.1016/j.talanta.2023.125548
摘要
The use of two-dimensional heterostructure composite as electrode modification material has become a new strategy to improve the electrocatalytic activity and electroactive sites of electrochemical sensor. Herein, a soluble heterostructure, namely rGO-PSS@MXene, was designed and synthesized by integrating poly (sodium p-styrenesulfonate)-functionalized reduced graphene oxide into MXene nanosheets via ultrasonic method. The interactive heterostructure can effectively alleviate the self-stacking of MXene and rGO, endowing them with superior electron transfer capacity and large specific surface area, thereby producing prominent synergistic electrocatalytic effect towards rutin. In addition, the excellent enrichment effect of rGO-PSS@MXene for rutin also plays an important role through the electrostatic and π-π stacking interactions. The electrochemical characteristics of rutin on the sensor were examined in detail and a sensitive sensing method was proposed. Under optimized conditions, the method showed satisfactory linear relationship for rutin in the concentration range of 0.005–10.0 μM, with limit of detection of 1.8 nM (S/N = 3). The quantitative validation results in herbal medicine and commercial Tartary buckwheat tea were highly consistent with the labeled quantity and the results of HPLC determination, respectively, suggesting the sensor possessed excellent selectivity and accuracy. This proposed strategy for rutin determination is expected to expand the application of MXene heterostructure in electrochemical sensors, and is envisioned as a promising candidate for quality monitoring of drugs and foods.
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