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High-sensitivity photo-electrochemical heterostructure of the cuprous oxide-metal organic framework for a dioctyl phthalate molecularly imprinted sensor
Analyst ( IF 4.2 ) Pub Date : 2021-09-01 , DOI: 10.1039/d1an01348c
Peng-Wei Gao 1 , Ying-Zhuo Shen 1 , Cheng Ma 1 , Qin Xu 1 , Xiao-Ya Hu 1
Affiliation  

This work designed a novel dioctyl phthalate (DOP) photoelectrochemical (PEC) sensor based on a molecularly imprinted polymer (MIP) modified Cu3(BTC)2@Cu2O heterostructure. In this work, a metal organic framework (MOF), Cu3(BTC)2, was coated on Cu2O through a simple immersion method to form a Cu3(BTC)2@Cu2O heterostructure. The heterostructure exhibited strong light adsorption ability, good stability and enhanced photocurrent under visible light irradiation. Using the Cu3(BTC)2@Cu2O heterostructure as the photoelectric converter, a PEC sensor was constructed by imprinting DOP on the heterostructure. Under the optimal experimental conditions, the PEC sensor showed a wide linear range from 25.0 pM–0.1 μM and a low detection limit of 9.15 pM. This method with good sensitivity, stability, selectivity and reproducibility in actual sample analyses showed promising applications of the MOF-based heterostructure in photoelectrochemical analysis fields.

中文翻译:

用于邻苯二甲酸二辛酯分子印迹传感器的氧化亚铜-金属有机骨架的高灵敏度光电化学异质结构

这项工作设计了一种基于分子印迹聚合物 (MIP) 修饰的 Cu 3 (BTC) 2 @Cu 2 O 异质结构的新型邻苯二甲酸二辛酯 (DOP) 光电化学 (PEC) 传感器。在这项工作中,通过简单的浸渍方法将金属有机骨架 (MOF) Cu 3 (BTC) 2涂覆在 Cu 2 O 上以形成 Cu 3 (BTC) 2 @Cu 2 O 异质结构。该异质结构在可见光照射下表现出较强的吸光能力、良好的稳定性和增强的光电流。使用 Cu 3 (BTC) 2 @Cu 2O 异质结构作为光电转换器,通过在异质结构上压印 DOP 构建了 PEC 传感器。在最佳实验条件下,PEC 传感器显示出 25.0 pM–0.1 μM 的宽线性范围和 9.15 pM 的低检测限。该方法在实际样品分析中具有良好的灵敏度、稳定性、选择性和重现性,表明基于 MOF 的异质结构在光电化学分析领域的应用前景广阔。
更新日期:2021-09-23
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