检出限
赤铁矿
煅烧
电化学气体传感器
材料科学
电化学
纳米颗粒
热液循环
选择性
线性范围
电极
化学工程
纳米技术
化学
色谱法
冶金
物理化学
工程类
催化作用
生物化学
作者
Menglin Zhou,Tong Tang,Danfeng Qin,Hao Cheng,Xinzhong Wang,Jianbing Chen,Thomas Wågberg,Guangzhi Hu
标识
DOI:10.1016/j.snb.2022.132931
摘要
An octahedral metal-organic framework, MIL-100, was synthesized by a hydrothermal method followed by high-temperature calcination. Thereafter, hematite nanoparticles were assembled on its surface to form Fe2O3-MIL-100, which was used to develop an electrochemical sensor for the sensitive detection of paraquat (PQ). The Fe2O3-MIL-100-based electrochemical sensor showed appreciable sensing performance under optimized conditions, with a linear response in the range of 0.01–30 μM and a limit of detection of 2.6 nM. The Fe2O3-MIL-100-based electrode produced an excellent current response to PQ even after 20 d of storage. Notably, the Fe2O3-MIL-100-based electrochemical sensor exhibited high sensitivity and selectivity for PQ detection in milk and honey samples. Therefore, the fabricated sensor can be an effective tool for the rapid detection of PQ in foods.
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