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Defect-mediated ripening of core-shell nanostructures

Author

Listed:
  • Qiubo Zhang

    (Materials Science Division, Lawrence Berkeley National Laboratory)

  • Xinxing Peng

    (National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Yifan Nie

    (Materials Science Division, Lawrence Berkeley National Laboratory)

  • Qi Zheng

    (Materials Science Division, Lawrence Berkeley National Laboratory)

  • Junyi Shangguan

    (Materials Science Division, Lawrence Berkeley National Laboratory
    University of California)

  • Chao Zhu

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

  • Karen C. Bustillo

    (National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Peter Ercius

    (National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory)

  • Linwang Wang

    (Materials Science Division, Lawrence Berkeley National Laboratory)

  • David T. Limmer

    (Materials Science Division, Lawrence Berkeley National Laboratory
    University of California
    Chemical Science Division, Lawrence Berkeley National Laboratory
    Kavli Energy Nanoscience Institute)

  • Haimei Zheng

    (Materials Science Division, Lawrence Berkeley National Laboratory
    University of California)

Abstract

Understanding nanostructure ripening mechanisms is desirable for gaining insight on the growth and potential applications of nanoscale materials. However, the atomic pathways of nanostructure ripening in solution have rarely been observed directly. Here, we report defect-mediated ripening of Cd-CdCl2 core-shell nanoparticles (CSN) revealed by in-situ atomic resolution imaging with liquid cell transmission electron microscopy. We find that ripening is initiated by dissolution of the nanoparticle with an incomplete CdCl2 shell, and that the areas of the Cd core that are exposed to the solution are etched first. The growth of the other nanoparticles is achieved by generating crack defects in the shell, followed by ion diffusion through the cracks. Subsequent healing of crack defects leads to a highly crystalline CSN. The formation and annihilation of crack defects in the CdCl2 shell, accompanied by disordering and crystallization of the shell structure, mediate the ripening of Cd-CdCl2 CSN in the solution.

Suggested Citation

  • Qiubo Zhang & Xinxing Peng & Yifan Nie & Qi Zheng & Junyi Shangguan & Chao Zhu & Karen C. Bustillo & Peter Ercius & Linwang Wang & David T. Limmer & Haimei Zheng, 2022. "Defect-mediated ripening of core-shell nanostructures," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29847-8
    DOI: 10.1038/s41467-022-29847-8
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    References listed on IDEAS

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    1. Kate Reidy & Georgios Varnavides & Joachim Dahl Thomsen & Abinash Kumar & Thang Pham & Arthur M. Blackburn & Polina Anikeeva & Prineha Narang & James M. LeBeau & Frances M. Ross, 2021. "Direct imaging and electronic structure modulation of moiré superlattices at the 2D/3D interface," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    2. Yuan-Yuan Liu & Xiang-Chun Li & Shi Wang & Tao Cheng & Huiyan Yang & Chen Liu & Yanting Gong & Wen-Yong Lai & Wei Huang, 2020. "Self-templated synthesis of uniform hollow spheres based on highly conjugated three-dimensional covalent organic frameworks," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    3. Qiubo Zhang & Kuibo Yin & Hui Dong & Yilong Zhou & Xiaodong Tan & Kaihao Yu & Xiaohui Hu & Tao Xu & Chao Zhu & Weiwei Xia & Feng Xu & Haimei Zheng & Litao Sun, 2017. "Electrically driven cation exchange for in situ fabrication of individual nanostructures," Nature Communications, Nature, vol. 8(1), pages 1-7, April.
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    1. Hayeon Baek & Sungsu Kang & Junyoung Heo & Soonmi Choi & Ran Kim & Kihyun Kim & Nari Ahn & Yeo-Geon Yoon & Taekjoon Lee & Jae Bok Chang & Kyung Sig Lee & Young-Gil Park & Jungwon Park, 2024. "Insights into structural defect formation in individual InP/ZnSe/ZnS quantum dots under UV oxidation," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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