佩多:嘘
材料科学
导电聚合物
电催化剂
介孔材料
化学工程
聚(3,4-亚乙基二氧噻吩)
沸石咪唑盐骨架
催化作用
复合数
咪唑酯
钼
安培法
电化学
循环伏安法
聚合物
纳米技术
无机化学
电极
金属有机骨架
化学
复合材料
吸附
有机化学
物理化学
冶金
工程类
作者
Cuiyuan Liang,Feng Zhang,Huiming Lin,Cheng Jiang,Wei Guo,Songjie Fan,Fengyu Qu
标识
DOI:10.1016/j.electacta.2019.134945
摘要
A novel composite material, hybrid zeolitic imidazolate framework (HZIF)–conducting poly(3,4-ethylenedioxythiophene) (PEDOT) has been fabricated on carbon cloth electrode (CCE) by microwave-assisted crystallization, followed by drop-coating and vapor deposition procedures. Specifically, the HZIF inserted by molybdenum (HZIF-Mo) is entitled to intrinsic catalytic activity towards amine molecules, which is firstly integrated with the conductive and catalytic PEDOT as an enhanced electrochemical sensor for hydroxylamine. Detection is performed by amperometric method, and the composite sensor (HZIF-Mo/PEDOT/CCE) shows a low detection limit of 0.04 μM (S/N = 3) in the linear range of 0.1–692.2 μM, along with superior anti-interference ability, reproducibility (RSD = 4.43%) and outstanding performance in real samples. As noticed, the hydroxylamine catalytic process combines the advantages of the alkaline-stable HZIF-Mo containing ample catalytic sites and high surface area and the mesoporous PEDOT reining in outstanding conductivity and redox capability, thereby imparting amplified electrochemical signals. This work undertakes an opening to expand MOF-based composites for versatile sensing applications.
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