分子印迹聚合物
检出限
微分脉冲伏安法
双酚A
材料科学
循环伏安法
双酚
电极
电化学
纳米材料
电化学气体传感器
选择性
纳米技术
化学工程
化学
环氧树脂
复合材料
色谱法
有机化学
物理化学
工程类
催化作用
作者
Jinghan Guo,Yiping Wu,Yanhui Li,Shuangying Li,Zhi Li,Jingwen Niu,Chunmao Chen,Qingxiang Zhou
标识
DOI:10.1016/j.susmat.2023.e00805
摘要
A creative electrochemical probe utilizing molecularly imprinted modified magnetic carbon dots was designed and fabricated. Carbon dots are a new kind of green, pollution-free, cheap and easy to obtain nanomaterials. The combination of Fe3O4 and carbon dots improved the defect of ferric oxide being easy to aggregate, and their co-modification significantly enhanced the electrochemical activity of the electrode. Cyclic voltammetry and differential pulse voltammetry were executed to evaluate the electrochemical behavior of the co-modified electrode surface and performance of the probe. The constructed probe exhibited excellent selectivity and sensitivity for determining bisphenol AP in plastic products. The introduction of molecularly imprinted polymers endowed the sensor excellent selectivity, ensuring specific recognition of bisphenol AP. The fabricated sensor demonstrated a good two-stage linear range of 0.07–0.3 μM and 0.3–10 μM, and the detection limit was 0.027 μM. The constructed probe was validated to detect bisphenol AP in self-heating hot pot, instant noodle bucket and disposable plastic cup, and satisfactory results were achieved. These results indicated that the fabricated sensor was a cheap, rapid, and selective sensing-platform for detecting bisphenol AP, and could be employed as a reliable routine tool.
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