Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
Biosens Bioelectron. 2022 May 1;203:114036. doi: 10.1016/j.bios.2022.114036. Epub 2022 Jan 26.
Carbendazim (CBZ) has been widely used in agricultural production to control fruits and vegetables diseases, but it can also destroy the human endocrine system. Therefore, sensitive detection of CBZ has attracted increasing attention worldwide. In this study, Pd nanoparticles (Pd NPs) decorated on CdS microsphere (Pd NPs/CdS) was prepared by the in-situ photoreduced method, and based on the surface plasmon resonance (SPR) effect of noble metal and Schottky junction between Pd nanoparticles (Pd NPs) and CdS microsphere, the photocurrent after introducing Pd NPs is 7.7 times higher than that of bare CdS microsphere. In view of the outstanding photoelectrochemical (PEC) performance of Pd NPs/CdS and the high specificity of the aptamer, the as-fabricated PEC aptasensor for CBZ detection possesses the excellent detection performance including a broad linear ranging from 1.0 × 10 to 1.0 × 10 mol/L as a low detection limit of 3.3 × 10 mol/L (S/N = 3). Furthermore, the PEC aptasensor was used for determination of lettuce samples from actual agricultural products with satisfactory results.
多菌灵 (CBZ) 已广泛应用于农业生产以控制水果和蔬菜疾病，但它也可能破坏人体内分泌系统。因此，对 CBZ 的敏感检测已引起全球越来越多的关注。在这项研究中，通过原位光还原法制备了负载在 CdS 微球上的钯纳米粒子 (Pd NPs/CdS)，并基于贵金属的表面等离子体共振 (SPR) 效应和 Pd 纳米粒子 (Pd NPs) 与 CdS 微球之间的肖特基结，引入 Pd NPs 后的光电流比裸 CdS 微球高 7.7 倍。鉴于 Pd NPs/CdS 的出色光电化学 (PEC) 性能和适体的高特异性，所构建的用于 CBZ 检测的 PEC 适体传感器具有出色的检测性能，包括从 1.0×10 到 1.0×10 mol/L 的宽线性范围和 3.3×10 mol/L 的低检测限 (S/N=3)。此外，该 PEC 适体传感器还用于实际农产品中生菜样品的测定，结果令人满意。
