Au纳米星的制备及其光热性能研究  

Preparation and photothermal properties of Au nanostars

作　　者：马静梅[1] 明硕阳 张雨涵 王瑞琪 李雨轩 赵文诗 MA Jing-mei;MING Shuo-yang;ZHANG Yu-han;WANG Rui-qi;LI Yu-xuan;ZHAO Wen-shi(College of Physics,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林师范大学学报(自然科学版)》2025年第1期26-30,共5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(20240101074JC)。

摘　　要：采用柠檬酸钠还原法和种子介导生长法分别成功制备了Au纳米粒子和Au纳米星.利用透射电子显微镜(TEM)和紫外-可见光光度计(UV-Vis)对样品的微观形貌和光学性质进行了表征.利用红外热像仪对比了Au纳米粒子和Au纳米星的光热转换能力.以金黄色葡萄球菌作为目标物,在近红外(808 nm)激光照射的条件下,利用扫描电子显微镜(SEM)观察Au纳米星对细菌的光热杀灭效果.实验结果表明,各向异性结构的Au纳米星具有更优异的光热转换性能,能够实现对金黄色葡萄球菌的有效杀灭.Au nanoparticles and Au nanostars were successfully synthesized using sodium citrate reduction method and seed-mediated growth method,respectively.Transmission electron microscopy(TEM)and ultraviolet-visible spectrophotometry(UV-Vis)were employed to characterize the microstructures and optical properties of the samples.The photothermal conversion performance of Au nanoparticles and Au nanostars were compared using an infrared thermal image.Furthermore,with Staphylococcus aureus as the target,the photothermal killing effect of Au nanostars on bacteria was observed under near-infrared(808 nm)laser irradiation using scanning electron microscopy(SEM)test.The experimental results demonstrate that Au nanostars with anisotropic structures exhibit more superior photothermal conversion performance,thereby achieving effective killing of Staphylococcus aureus.

关 键 词：种子介导生长法 Au纳米星 光热疗 金黄色葡萄球菌 

分 类 号：TB383.1[一般工业技术—材料科学与工程]