纳米团簇
检出限
电化学
电化学气体传感器
选择性
多菌灵
再现性
材料科学
化学
复合数
碳纳米管
化学工程
电极
纳米技术
色谱法
有机化学
复合材料
杀菌剂
物理化学
催化作用
工程类
生物
植物
作者
Wei Zhong,Feng Gao,Jin Zou,Shuwu Liu,Mingfang Li,Yansha Gao,Yongfang Yu,Xiaogang Wang,Limin Lu
出处
期刊:Food Chemistry
[Elsevier]
日期:2021-10-01
卷期号:360: 130006-130006
被引量:119
标识
DOI:10.1016/j.foodchem.2021.130006
摘要
In this paper, a novel ratiometric electrochemical sensor for carbendazim (CBZ) detection was constructed by a composite of [email protected] nanoclusters and amino-functionalized multi-walled carbon nanotubes ([email protected]/NH2-MWCNTs). The Ag nanoclusters (AgNCs) embedded in the MXene not only could inhibit the aggregation of MXene flakes and enhance the electrocatalytic ability, but also serve as an internal reference probe for the ratiometric electrochemical detection. Moreover, the introduction of NH2-MWCNTs can further improve the electrochemical signals of CBZ and Ag, resulting in the enhanced signal amplification and higher sensitivity. Based on these characteristics of the [email protected]/NH2-MWCNTs composite, the proposed sensor exhibits a favorable linear relationship between ICBZ/IAgNCs and the concentration of CBZ ranging from 0.3 nM to 10 μM and a low limit of detection of 0.1 nM. Moreover, the proposed ratiometric electrochemical sensing platform also demonstrates high selectivity, good reproducibility, secular stability, and satisfactory applicability in vegetable samples.
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