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Synthesis of hexagonal close-packed gold nanostructures

Author

Listed:
  • Xiao Huang

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Shaozhou Li

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Yizhong Huang

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Shixin Wu

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Xiaozhu Zhou

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Shuzhou Li

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Chee Lip Gan

    (School of Materials Science and Engineering, Nanyang Technological University)

  • Freddy Boey

    (School of Materials Science and Engineering, Nanyang Technological University
    Center for Biomimetic Sensor Science, Nanyang Technological University)

  • Chad A. Mirkin

    (Northwestern University)

  • Hua Zhang

    (School of Materials Science and Engineering, Nanyang Technological University
    Center for Biomimetic Sensor Science, Nanyang Technological University)

Abstract

Solid gold is usually most stable as a face-centred cubic (fcc) structure. To date, no one has synthesized a colloidal form of Au that is exclusively hexagonal close-packed (hcp) and stable under ambient conditions. Here we report the first in situ synthesis of dispersible hcp Au square sheets on graphene oxide sheets, which exhibit an edge length of 200–500 nm and a thickness of ~ 2.4 nm (~ 16 Au atomic layers). Interestingly, the Au square sheet transforms from hcp to a fcc structure on exposure to an electron beam during transmission electron microscopy analysis. In addition, as the square sheet grows thicker (from ~ 2.4 to 6 nm), fcc segments begin to appear. A detailed experimental analysis of these structures shows that for structures with ultrasmall dimensions (for example,

Suggested Citation

  • Xiao Huang & Shaozhou Li & Yizhong Huang & Shixin Wu & Xiaozhu Zhou & Shuzhou Li & Chee Lip Gan & Freddy Boey & Chad A. Mirkin & Hua Zhang, 2011. "Synthesis of hexagonal close-packed gold nanostructures," Nature Communications, Nature, vol. 2(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1291
    DOI: 10.1038/ncomms1291
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    1. Kai Liu & Hao Yang & Yilan Jiang & Zhaojun Liu & Shumeng Zhang & Zhixue Zhang & Zhun Qiao & Yiming Lu & Tao Cheng & Osamu Terasaki & Qing Zhang & Chuanbo Gao, 2023. "Coherent hexagonal platinum skin on nickel nanocrystals for enhanced hydrogen evolution activity," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Chenxinyu Pan & Yuanbiao Tong & Haoliang Qian & Alexey V. Krasavin & Jialin Li & Jiajie Zhu & Yiyun Zhang & Bowen Cui & Zhiyong Li & Chenming Wu & Lufang Liu & Linjun Li & Xin Guo & Anatoly V. Zayats , 2024. "Large area single crystal gold of single nanometer thickness for nanophotonics," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    3. Fan Liao & Kui Yin & Yujin Ji & Wenxiang Zhu & Zhenglong Fan & Youyong Li & Jun Zhong & Mingwang Shao & Zhenhui Kang & Qi Shao, 2023. "Iridium oxide nanoribbons with metastable monoclinic phase for highly efficient electrocatalytic oxygen evolution," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    4. Olabi, A.G. & Abdelkareem, Mohammad Ali & Wilberforce, Tabbi & Sayed, Enas Taha, 2021. "Application of graphene in energy storage device – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).

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