Atomic Scale Tracking of Single Layer Oxide Formation: Self-Peeling and Phase Transition in Solution,Small Methods

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Atomic Scale Tracking of Single Layer Oxide Formation: Self-Peeling and Phase Transition in Solution
Small Methods ( IF 10.7 ) Pub Date : 2021-05-27 , DOI: 10.1002/smtd.202001234
Junyu Zhang ₁ , Youhong Jiang ₁ , Qiyuan Fan ₁ , Mi Qu ₁ , Nana He ₁ , Junxian Deng ₁ , Yue Sun ₁ , Jun Cheng ₁ , Hong-Gang Liao ₁ , Shi-Gang Sun ₁

Affiliation

Liquid phase electron microscopy (TEM) is used to track the formation of In₂O₃ ultrathin nanosheet in solution at atomic scale. This observation reveals that the formation of few atomic layer nanosheet goes through a complicated phase transition process from InCl₃^.3H₂O to In(OH)₃ and then to In₂O₃. Interestingly, the intermediate InCl₃^.3H₂O nanosheet can grow via either layer by layer or the strain-driven enation growth from precursor solution. Moreover, in situ TEM results and density functional theory (DFT) calculations demonstrate that the oleylamine is responsible for the self-peeling process. These findings can provide atomic-level insight for the understanding of how 2D nanomaterial grows and transforms in solution.

中文翻译：

单层氧化物形成的原子尺度跟踪：溶液中的自剥离和相变

液相电子显微镜 (TEM) 用于在原子尺度上追踪溶液中 In ₂ O ₃超薄纳米片的形成。这一观察结果表明，少量原子层纳米片的形成经历了从 InCl ₃复杂的相变过程^。3H ₂ O 转化为 In(OH) ₃，然后转化为 In ₂ O ₃。有趣的是，中间体 InCl ₃^。3H ₂O 纳米片可以通过逐层生长或从前体溶液中应变驱动的烯化生长来生长。此外，原位 TEM 结果和密度泛函理论 (DFT) 计算表明，油胺负责自剥离过程。这些发现可以为理解 2D 纳米材料如何在溶液中生长和转变提供原子级洞察力。

更新日期：2021-07-14

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