Defect-mediated ripening of core-shell nanostructures
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-CdCl...
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sg-ntu-dr.10356-1632202023-07-14T16:06:26Z Defect-mediated ripening of core-shell nanostructures Zhang, Qiubo Peng, Xinxing Nie, Yifan Zheng, Qi Shangguan, Junyi Zhu, Chao Bustillo, Karen C. Ercius, Peter Wang, Linwang Limmer, David T. Zheng, Haimei School of Materials Science and Engineering Engineering::Materials Atomic Resolution Imaging Core Shell Nanoparticle 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. Published version This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division under Contract No. DE-AC02-05-CH11231 within the in-situ TEM program (KC22ZH). Work at the Molecular Foundry of Lawrence Berkeley National Laboratory (LBNL) was supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. 2022-11-29T02:35:28Z 2022-11-29T02:35:28Z 2022 Journal Article Zhang, Q., Peng, X., Nie, Y., Zheng, Q., Shangguan, J., Zhu, C., Bustillo, K. C., Ercius, P., Wang, L., Limmer, D. T. & Zheng, H. (2022). Defect-mediated ripening of core-shell nanostructures. Nature Communications, 13(1), 2211-. https://dx.doi.org/10.1038/s41467-022-29847-8 2041-1723 https://hdl.handle.net/10356/163220 10.1038/s41467-022-29847-8 35468902 2-s2.0-85128804681 1 13 2211 en Nature Communications © The Author(s) 2022. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
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Engineering::Materials Atomic Resolution Imaging Core Shell Nanoparticle Zhang, Qiubo Peng, Xinxing Nie, Yifan Zheng, Qi Shangguan, Junyi Zhu, Chao Bustillo, Karen C. Ercius, Peter Wang, Linwang Limmer, David T. Zheng, Haimei Defect-mediated ripening of core-shell nanostructures |
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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. |
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School of Materials Science and Engineering |
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School of Materials Science and Engineering Zhang, Qiubo Peng, Xinxing Nie, Yifan Zheng, Qi Shangguan, Junyi Zhu, Chao Bustillo, Karen C. Ercius, Peter Wang, Linwang Limmer, David T. Zheng, Haimei |
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Article |
author |
Zhang, Qiubo Peng, Xinxing Nie, Yifan Zheng, Qi Shangguan, Junyi Zhu, Chao Bustillo, Karen C. Ercius, Peter Wang, Linwang Limmer, David T. Zheng, Haimei |
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Zhang, Qiubo |
title |
Defect-mediated ripening of core-shell nanostructures |
title_short |
Defect-mediated ripening of core-shell nanostructures |
title_full |
Defect-mediated ripening of core-shell nanostructures |
title_fullStr |
Defect-mediated ripening of core-shell nanostructures |
title_full_unstemmed |
Defect-mediated ripening of core-shell nanostructures |
title_sort |
defect-mediated ripening of core-shell nanostructures |
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2022 |
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https://hdl.handle.net/10356/163220 |
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1773551299883696128 |