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Crystal dissolution by particle detachment

Author

Listed:
  • Guomin Zhu

    (Pacific Northwest National Laboratory
    University of Washington)

  • Benjamin A. Legg

    (Pacific Northwest National Laboratory)

  • Michel Sassi

    (Pacific Northwest National Laboratory)

  • Xinran Liang

    (Pacific Northwest National Laboratory)

  • Meirong Zong

    (Pacific Northwest National Laboratory)

  • Kevin M. Rosso

    (Pacific Northwest National Laboratory)

  • James J. Yoreo

    (Pacific Northwest National Laboratory
    University of Washington)

Abstract

Crystal dissolution, which is a fundamental process in both natural and technological settings, has been predominately viewed as a process of ion-by-ion detachment into a surrounding solvent. Here we report a mechanism of dissolution by particle detachment (DPD) that dominates in mesocrystals formed via crystallization by particle attachment (CPA). Using liquid phase electron microscopy to directly observe dissolution of hematite crystals — both compact rhombohedra and mesocrystals of coaligned nanoparticles — we find that the mesocrystals evolve into branched structures, which disintegrate as individual sub-particles detach. The resulting dissolution rates far exceed those for equivalent masses of compact single crystals. Applying a numerical generalization of the Gibbs-Thomson effect, we show that the physical drivers of DPD are curvature and strain inherently tied to the original CPA process. Based on the generality of the model, we anticipate that DPD is widespread for both natural minerals and synthetic crystals formed via CPA.

Suggested Citation

  • Guomin Zhu & Benjamin A. Legg & Michel Sassi & Xinran Liang & Meirong Zong & Kevin M. Rosso & James J. Yoreo, 2023. "Crystal dissolution by particle detachment," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41443-y
    DOI: 10.1038/s41467-023-41443-y
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    References listed on IDEAS

    as
    1. Guomin Zhu & Maria L. Sushko & John S. Loring & Benjamin A. Legg & Miao Song & Jennifer A. Soltis & Xiaopeng Huang & Kevin M. Rosso & James J. De Yoreo, 2021. "Self-similar mesocrystals form via interface-driven nucleation and assembly," Nature, Nature, vol. 590(7846), pages 416-422, February.
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