分子印迹聚合物
聚苯胺
石墨烯
检出限
材料科学
循环伏安法
电化学气体传感器
微分脉冲伏安法
氧化物
聚合物
伏安法
导电聚合物
化学工程
电化学
核化学
电极
聚合
纳米技术
化学
色谱法
复合材料
有机化学
选择性
冶金
催化作用
物理化学
工程类
作者
Jedsada Chuiprasert,Suwanna Kitpati Boontanon,Sira Srinives,Narin Boontanon,Chongrak Polprasert,Nudjarin Ramungul
出处
期刊:IOP conference series
[IOP Publishing]
日期:2022-01-01
卷期号:973 (1): 012003-012003
被引量:1
标识
DOI:10.1088/1755-1315/973/1/012003
摘要
Abstract Ciprofloxacin (CIP) is widely utilised to treat bacterial infections. Currently, CIP is present in water sources at higher concentrations, thus necessitating close monitoring. This study developed electrochemical nano-sensors based on molecularly imprinted polymer (MIP) and reduced graphene oxide (rGO) composites to detect CIP. rGO served as the loading platform for MIP immobilisation on a glassy carbon electrode (GCE). A copolymer thin film, comprised of polyaniline copolymerized with o-phenylenediamine (PAni-co-PDA) was obtained by electro-polymerisation utilizing cyclic voltammetry (CV) under suitable conditions. The performance of the modified GCE was examined utilizing CV mode in a hexacyanoferrate electrolyte as an electrochemical probe. The PAni-co-PDA/rGO-modified GCE exhibited enhanced improvement and efficient electrocatalytic behaviour in the oxidation of CIP with relatively high sensitivity and stability. The sensor was operated in differential pulse voltammetry (DPV) mode. Our best results revealed good linearity response to CIP in the range of 0.001–10.0 μM with an R-squared of 0.949, a detection limit of 0.09 μM (3.3 SD/S), and the calibration plot of Δ I minus the logarithm of the CIP concentration exhibited a sensitivity of –1.521. The sensor demonstrated a conductive polymer-based device that can be utilised for rapid CIP determination in pharmaceutical samples and biological fluids.
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