量子点
赭曲霉毒素A
材料科学
检出限
碳纳米管
纳米技术
结垢
纳米颗粒
电化学
炭黑
化学工程
化学
复合材料
膜
色谱法
真菌毒素
电极
天然橡胶
物理化学
工程类
食品科学
生物化学
作者
Zhiwen Huang,María Luisa Cerón,Kehuai Feng,Dan Wang,María Belén Camarada,Xiaoning Liao
标识
DOI:10.1016/j.apsusc.2022.152429
摘要
Exploration of an efficient ochratoxin A (OTA) screening technique is highly important because of its highly toxic effect on human health. Electrochemical sensor, characterized with high accuracy and precise, is an emerging detection technique for toxic agents in food samples. However, the inherent fouling effect and low electrochemical activity from OTA molecular hinder its practical application in OTA detection. Herein, we prepared a novel 0D/1D nanohybrid by anchoring black phosphorus quantum dots (BPQDs) over carboxylated multiwalled carbon nanotubes (CNTs-COOH) via a facile sonication assisted assembly approach. Characterization techniques together with theoretical approximations reveal that BPQDs can anchor onto the CNTs-COOH via strong covalent reaction, endowing the nanohybrid with high conductivity, high stability and high anti-fouling property. The electrochemical sensor constructed with the 0D/1D nanohybrid shows high electrochemical activity and a good antifouling effect in OTA detection. In optimized conditions, the sensor provide a quantitative determination of OTA in a wide concentration range from 0.4 to 10 μM with a detection limit of 0.03 μM. Moreover, the sensor shows high reproductivity and satisfactory anti-interference ability. Satisfactory recoveries that can comparable to those of high-performance liquid chromatography indicate that the sensor is promising for the trace-level analysis of OTA in agricultural crops.
科研通智能强力驱动
Strongly Powered by AbleSci AI