基于鲁米诺-MWCNTs@氧化石墨烯纳米带体系的“信号开启”电化学发光五氯苯酚传感器。
"Signal on" electrochemiluminescence pentachlorophenol sensor based on luminol-MWCNTs@graphene oxide nanoribbons system.
机构信息
Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
出版信息
Talanta. 2015 Mar;134:448-452. doi: 10.1016/j.talanta.2014.11.048. Epub 2014 Dec 2.
A "signal on" electrochemiluminescence (ECL) sensor for pentachlorophenol (PCP) detection was constructed based on the amplified ECL of luminol at a multiwalled carbon nanotubes@graphene oxide nanoribbons (MWCNTs@GONRs) modified electrode. Due to the good electrocatalytic activity of MWCNTs@GONRs toward luminol system, the oxidation peak current of luminol at the MWCNTs@GONRs modified electrode was enhanced for ~6-fold than that of the bare electrode; and the ECL intensity of luminol was amplified for ~5.3-fold correspondingly. Furthermore, the amplified ECL signal of luminol was linear with the concentration of PCP in the range between 2 pg mL(-1) and 10 ng mL(-1) with a detection limit of 0.7 pg mL(-1) (S/N=3). With the merits of good reproducibility, acceptable stability, wide linear range, low detection limit and simplicity, the proposed luminol ECL sensor showed great potential in the field of analytical applications.
基于多壁碳纳米管@graphene 氧化物纳米带（MWCNTs@GONRs）修饰电极上的鲁米诺的放大电化学发光（ECL），构建了用于五氯苯酚（PCP）检测的“信号开启”ECL 传感器。由于 MWCNTs@GONRs 对鲁米诺体系具有良好的电催化活性，MWCNTs@GONRs 修饰电极上鲁米诺的氧化峰电流比裸电极增强了约 6 倍；相应地，鲁米诺的 ECL 强度也放大了约 5.3 倍。此外，鲁米诺的放大 ECL 信号与 PCP 的浓度在 2 pg mL(-1) 和 10 ng mL(-1) 之间呈线性关系，检测限为 0.7 pg mL(-1)（S/N=3）。该鲁米诺 ECL 传感器具有良好的重现性、可接受的稳定性、宽线性范围、低检测限和简单性等优点，在分析应用领域具有很大的应用潜力。
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