Fe_(3)O_(4)-Au磁性纳米复合材料的制备及其SERS性能研究  

Preparation and SERS properties study of Fe_(3)O_(4)-Au magnetic nanocomposites

作　　者：刘洪波[1] 戴画松 王晟懿 段依彤 吴怡玮 郭睿 赵文诗 刘洋[1] LIU Hong-bo;DAI Hua-song;WANG Sheng-yi;DUAN Yi-tong;WU Yi-wei;GUO Rui;ZHAO Wen-shi;LIU Yang(Key Laboratory of Functional Materials Physics and Chemistry of Ministry of Education,Jilin Normal University,Changchun 130103,China)

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室,吉林长春130103

出　　处：《吉林师范大学学报（自然科学版）》2024年第4期25-28,共4页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(21676115);吉林省科技发展计划项目(20220203021SF)。

摘　　要：成功合成了Fe_(3)O_(4)-Au磁性纳米复合材料,利用透射电子显微镜(TEM)、X射线衍射仪(XRD)、紫外分光光度计(UV-Vis)和振动样品磁强计(VSM)对样品的形貌、结构、光学特性和磁学性能进行了表征,并以金黄色葡萄球菌作为检测目标物对Fe_(3)O_(4)-Au磁性纳米复合材料的SERS性能进行了研究.结果表明,Au纳米粒子均匀沉积在Fe_(3)O_(4)纳米粒子表面,具有强磁性的Fe_(3)O_(4)-Au磁性纳米复合材料对金黄色葡萄球菌的检测限低至10^(3) cfu/mL.本研究为金黄色葡萄球菌的快速灵敏检测提供了新的思路,并在食品安全检测领域具有巨大的应用潜力.Fe_(3)O_(4)-Au magnetic nanocomposites were successfully synthesized,and the morphology,structure,optical properties and magnetic properties of the samples were characterized by using transmission electron microscopy(TEM),X-ray diffractometer(XRD),ultraviolet-visible light detector(UV-Vis)and vibrating sample magnetometer(VSM),respectively.Staphylococcus aureus was chosen as target analyte to investigate the SERS performance of Fe_(3)O_(4)-Au magnetic nanocomposites.The results show that Au nanoparticles are uniformly deposited on the surface of Fe_(3)O_(4) nanoparticles,and the Fe_(3)O_(4)-Au magnetic nanocomposites with strong magnetism have a detection limit as low as 103 cfu/mL for Staphylococcus aureus.The present study provides a fresh perspective on the rapid and sensitive identification of Staphylococcus aureus and holds a significant potential in the field of food safety detection.

关 键 词：Fe_(3)O_(4)-Au磁性纳米复合材料 表面增强拉曼散射(SERS) 金黄色葡萄球菌 

分 类 号：TB333[一般工业技术—材料科学与工程]