盐诱导金纳米粒子自组装和沉降制备具有宽波段吸收特性的黑金  

Salt-Induced Self-assembly of Au Nanoparticles and Sedimentation Enables Plasmonic Black Au film with Broadband Absorption Properties

作　　者：张梦瑶 余仁鹏 韩梅[1] 刘建芳 李末霞 胡家文[1] 田中群[2] ZHANG Mengyao;YU Renpeng;HAN Mei;LIU Jianfang;LI Moxia;HU Jiawen;TIAN Zhongqun(Hunan Key Laboratory of Two-Dimensional Materials,College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China;State Key Laboratory for Physical Chemistry of Solid Surfaces,Xiamen University,Xiamen 361005,China)

机构地区：[1]湖南省二维材料重点实验室,湖南大学化学化工学院,长沙410082 [2]厦门大学固体表面物理化学国家重点实验室,厦门361005

出　　处：《高等学校化学学报》2020年第8期1903-1907,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21673070);厦门大学固体表面物理化学国家重点实验室开放项目(批准号:201913)资助。

摘　　要：通过向金溶胶中加入无机盐诱导金纳米粒子自组装,并自然沉降金纳米粒子组装体得到黑金薄膜.研究结果表明,该黑金薄膜在400~1600 nm的宽带范围内表现出很强的吸收能力(>80%),在400~800 nm的可见范围内能达到94%,表现出高光热转换能力和宽波段的高表面增强拉曼散射(SERS)活性.Plasmonic black gold film from Au NPs was prepared via salt-induced self-assembly and sedimentation method.That were accomplished by addition of inorganic salt into Au colloids to induce the self-assembly of Au NPs and subsequent sedimentation of the resultant Au NP assembly into black Au film.The as-prepared black Au film shows strong absorption capability( >80%) in a broadband range of 400—1600 nm,reaching 94% in the visible range of 400—800 nm.Consequently,it shows high light-heat conversion capability and broadband high surface-enhanced Raman scattering( SERS) activity.These results,thus,offer a facile preparation strategy for plasmon black Au,which shows great potential in seawater desalination,quick SERS detection,and beyond.

关 键 词：黑金 等离激元 宽波段吸收 光热转换 表面增强拉曼散射 

分 类 号：O643[理学—物理化学]