佩多:嘘
材料科学
电化学
电极
化学工程
纳米技术
碳纤维
过氧化氢
炭黑
聚(3,4-亚乙基二氧噻吩)
石墨烯
复合数
复合材料
化学
有机化学
图层(电子)
物理化学
工程类
天然橡胶
作者
Xinmeng Zhang,Mingyue Bai,Lei Ge,Yuanyuan Yao
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2024-01-01
摘要
The slow redox rate of hydrogen peroxide (H2O2) in neutral environments makes the H2O2 sensor inadequate for the detection of low levels of signalling molecules. The aim of this study is to fabricate a flexible sensing electrode by hydrothermally loading micro-nanometer Ni and Co(OH)2 on carbon cloth (CC) and electrochemically depositing poly(3,4-ethylenedioxythiophene) (PEDOT) on the surface of the electrode. The sensor presented high sensitivity (10.43 mA mM-1 cm-2), a wide detection range (0.033-120.848 mM), a low detection limit (0.92 nM), high stability, and excellent anti-interference performance in neutral solutions. Ni-Co(OH)2 provides abundant active sites while CC solves their agglomeration phenomenon and conductivity. The PEDOT film offers heightened conductivity, hydrophilicity, interfacial stability, and an electrochemically active surface area (ECSA). The side area of the chrysanthemum petal like PEDOT is 39 ± 7 times the bottom area, and PEDOT increases the ECSA of the composite to six times that of CC. Electrochemical precise control of PEDOT morphology to improve sensor performance provides a new strategy for the application of PEDOT in sensors.
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