College of Geography and Environmental Sciences, Key Laboratory of Watershed Earth Surface Processes and Ecological Security, College of Chemistry and Materials Sciences, College of Life Sciences, Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China.
Zhejiang Jinhua Ecological and Environmental Monitoring Center, Jinhua, 321015, China.
Mikrochim Acta. 2023 Aug 14;190(9):350. doi: 10.1007/s00604-023-05927-4.
A split-type photoelectrochemical (PEC) sensor was designed for the detection of profenofos (PFF) depending on the magnetic-assisted exciton-plasmon interactions (EPI) between the semiconductor substrate and Au NPs. The core-shell BiS nanorods@MoS nanosheets (BiS NRs@MoS NSs) heterostructure nanomaterial with fascinating performance was synthesized and used as the photovoltaic conversion substrate and signal molecules absorption platform. The PEC sensor is operated by co-incubating with the released Au NPs-cDNA from the surface of magnetic beads, originating from the target-triggered DNA double-stranded structure opening event. Due to the strong EPI effects, the photocurrent of BiS NRs@MoS NSs decreased and varied with the PFF concentrations. The proposed PEC sensor exhibited outstanding analytical performances, including a wide linear range (1.0 pg mL~1.0 μg mL), low detection limitation (0.23 pg mL, at 3 σ/m), excellent specificity, high stability, and applicability. Overall, this work provides a new signal strategy for PEC biosensors and extends its application in environmental analysis.
一种分体式光电化学（PEC）传感器被设计用于检测丙溴磷（PFF），这取决于半导体基底和 Au NPs 之间的磁辅助激子-等离子体相互作用（EPI）。具有迷人性能的核壳型 BiS 纳米棒@MoS 纳米片（BiS NRs@MoS NSs）异质结构纳米材料被合成，并用作光伏转换基底和信号分子吸收平台。PEC 传感器通过与从磁珠表面释放的 Au NPs-cDNA 共孵育来操作，这源于目标触发的 DNA 双链结构打开事件。由于强 EPI 效应，BiS NRs@MoS NSs 的光电流降低并随 PFF 浓度变化。所提出的 PEC 传感器表现出出色的分析性能，包括宽线性范围（1.0 pg mL~1.0 μg mL）、低检测限（0.23 pg mL，在 3 σ/m 时）、优异的特异性、高稳定性和适用性。总的来说，这项工作为 PEC 生物传感器提供了一种新的信号策略，并扩展了其在环境分析中的应用。
