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High-surface-area corundum nanoparticles by resistive hotspot-induced phase transformation

Author

Listed:
  • Bing Deng

    (Rice University)

  • Paul A. Advincula

    (Rice University)

  • Duy Xuan Luong

    (Rice University)

  • Jingan Zhou

    (Rice University)

  • Boyu Zhang

    (Rice University)

  • Zhe Wang

    (Rice University)

  • Emily A. McHugh

    (Rice University)

  • Jinhang Chen

    (Rice University)

  • Robert A. Carter

    (Rice University)

  • Carter Kittrell

    (Rice University)

  • Jun Lou

    (Rice University
    Rice University
    Rice University)

  • Yuji Zhao

    (Rice University)

  • Boris I. Yakobson

    (Rice University
    Rice University
    Rice University)

  • Yufeng Zhao

    (Rice University
    Corban University)

  • James M. Tour

    (Rice University
    Rice University
    Rice University
    Rice University)

Abstract

High-surface-area α-Al2O3 nanoparticles are used in high-strength ceramics and stable catalyst supports. The production of α-Al2O3 by phase transformation from γ-Al2O3 is hampered by a high activation energy barrier, which usually requires extended high-temperature annealing (~1500 K, > 10 h) and suffers from aggregation. Here, we report the synthesis of dehydrated α-Al2O3 nanoparticles (phase purity ~100%, particle size ~23 nm, surface area ~65 m2 g−1) by a pulsed direct current Joule heating of γ-Al2O3. The phase transformation is completed at a reduced bulk temperature and duration (~573 K,

Suggested Citation

  • Bing Deng & Paul A. Advincula & Duy Xuan Luong & Jingan Zhou & Boyu Zhang & Zhe Wang & Emily A. McHugh & Jinhang Chen & Robert A. Carter & Carter Kittrell & Jun Lou & Yuji Zhao & Boris I. Yakobson & Y, 2022. "High-surface-area corundum nanoparticles by resistive hotspot-induced phase transformation," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-32622-4
    DOI: 10.1038/s41467-022-32622-4
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    References listed on IDEAS

    as
    1. Eric J. Peterson & Andrew T. DeLaRiva & Sen Lin & Ryan S. Johnson & Hua Guo & Jeffrey T. Miller & Ja Hun Kwak & Charles H. F. Peden & Boris Kiefer & Lawrence F. Allard & Fabio H. Ribeiro & Abhaya K. D, 2014. "Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on alumina," Nature Communications, Nature, vol. 5(1), pages 1-11, December.
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    Cited by:

    1. Lin Zhang & Li Peng & Yuanchao Lu & Xin Ming & Yuxin Sun & Xiaoyi Xu & Yuxing Xia & Kai Pang & Wenzhang Fang & Ning Huang & Zhen Xu & Yibin Ying & Yingjun Liu & Yingchun Fu & Chao Gao, 2023. "Sub-second ultrafast yet programmable wet-chemical synthesis," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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