高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (8): 1903-1907.doi: 10.7503/cjcu20200181

• 材料化学 • 上一篇    下一篇

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

张梦瑶1, 余仁鹏1, 韩梅1, 刘建芳1, 李末霞1, 胡家文1, 田中群2   

  1. 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
  • 收稿日期:2020-04-03 出版日期:2020-08-10 发布日期:2020-05-13
  • 通讯作者: 胡家文,男,博士,教授,主要从事光谱电化学及纳米材料合成、组装和应用等方面的研究.E-mail:jwhu@hnu.edu.cn E-mail:jwhu@hnu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号:21673070)和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.

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

ZHANG Mengyao1, YU Renpeng1, HAN Mei1, LIU Jianfang1, LI Moxia1, HU Jiawen1, TIAN Zhongqun2   

  1. 1. Hunan Key Laboratory of Two-Dimensional Materials, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;
    2. State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China
  • Received:2020-04-03 Online:2020-08-10 Published:2020-05-13
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21673070) and the Opening Project of State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, China(No.201913).

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.

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

Abstract: 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.

Key words: Black gold, Plasmon, Broadband absorption, Light-heat conversion, Surface-enhanced Raman scattering

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