Institute for Energy Research, School of Chemistry and Chemical Engineering, Key Laboratory of Zhenjiang, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, P. R. China.
Analyst. 2020 Nov 23;145(23):7695-7700. doi: 10.1039/d0an01355b.
A photoelectrochemical (PEC) aptasensor based on silver nanoparticle/BiOCl (AgNP/BiOCl) composites was constructed for detecting chloramphenicol (CAP). The surface-plasmon resonance (SPR) effect of AgNPs can focus the incident light and promote the migration and separation of the photogenerated carriers of AgNP/BiOCl composites. As a result, the AgNP/BiOCl composites showed an enhanced PEC performance compared to that of pure BiOCl. A PEC CAP aptasensor was fabricated using AgNP/BiOCl composites as photoactive materials and a CAP aptamer as a recognition element. The PEC aptasensor exhibited a broad linear response range (0.2 pM-10 nM), a low limit of determination (0.08 pM), satisfactory selectivity, stability, and reproducibility to meet the practical analysis requirements. This work demonstrates that the PEC CAP aptasensor has a promising prospect in environmental assays.
基于银纳米粒子/ BiOCl（AgNP/BiOCl）复合材料构建了一种用于检测氯霉素（CAP）的光电化学（PEC）适体传感器。AgNPs 的表面等离子体共振（SPR）效应可以聚焦入射光，并促进 AgNP/BiOCl 复合材料中光生载流子的迁移和分离。因此，与纯 BiOCl 相比，AgNP/BiOCl 复合材料表现出增强的 PEC 性能。以 AgNP/BiOCl 复合材料为光活性材料，以 CAP 适体作为识别元件，制备了 PEC CAP 适体传感器。该 PEC 适体传感器表现出宽的线性响应范围（0.2 pM-10 nM）、低的检测限（0.08 pM）、令人满意的选择性、稳定性和重现性，以满足实际分析要求。这项工作表明，PEC CAP 适体传感器在环境分析中具有广阔的应用前景。
