石墨烯
双酚A
材料科学
检出限
电化学
电极
氧化物
碳纳米管
电化学气体传感器
纳米技术
化学工程
化学
复合材料
色谱法
环氧树脂
冶金
物理化学
工程类
作者
Guangfei Qu,Yun Zhang,Junhong Zhou,Huimin Tang,Wei Ji,Zhoupeng Yan,Keheng Pan,Guangfei Qu
出处
期刊:Chemosphere
[Elsevier]
日期:2023-10-01
卷期号:337: 139315-139315
被引量:1
标识
DOI:10.1016/j.chemosphere.2023.139315
摘要
Since bisphenol A (BPA) and dimethyl bisphenol A (DM-BPA) are human endocrine disruptors (EDCs) with tiny potential differences (44 mV) and widespread applications, there is a lack of published reports on their simultaneous detection. Therefore, this study reports a novel electrochemical detection system capable of simultaneous direct detection of BPA and DM-BPA using screen-printed carbon electrodes (SPCE) as a sensing platform. To improve the electrochemical performance of the SPCE, the SPCE was modified by using a combination of Pt nanoparticles modified with single-walled carbon nanotubes (Pt@SWCNTs), MXene (Ti3C2), and graphene oxide (GO). In addition, the GO in Pt@SWCNTs-MXene-GO was reduced to reduced graphene oxide (rGO) by the action of electric field (-1.2 V), which significantly improved the electrochemical properties of the composites and effectively solved the problem of dispersion of the modified materials on the electrode surface. Under optimal experimental conditions, Pt@SWCNTs-Ti3C2-rGO/SPCE exhibited a suitable detection range (0.006-7.4 μmol L-1) and low detection limits (2.8 and 3 nmol L-1, S/N = 3) for the simultaneous detection of BPA (0.392 V vs. Ag/AgCl) and DM-BPA (0.436 V vs. Ag/AgCl)). Thus, this study provides new insights into detecting compounds with similar structures and slight potential differences. Finally, the developed sensor's reproducibility, stability, interference resistance and accuracy were demonstrated with satisfactory results.
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