Nanometre-thick single-crystalline nanosheets grown at the water-air interface

Nature Communications
Fei WangXudong Wang

Abstract

To date, the preparation of free-standing 2D nanomaterials has been largely limited to the exfoliation of van der Waals solids. The lack of a robust mechanism for the bottom-up synthesis of 2D nanomaterials from non-layered materials has become an obstacle to further explore the physical properties and advanced applications of 2D nanomaterials. Here we demonstrate that surfactant monolayers can serve as soft templates guiding the nucleation and growth of 2D nanomaterials in large area beyond the limitation of van der Waals solids. One- to 2-nm-thick, single-crystalline free-standing ZnO nanosheets with sizes up to tens of micrometres are synthesized at the water-air interface. In this process, the packing density of surfactant monolayers adapts to the sub-phase metal ions and guides the epitaxial growth of nanosheets. It is thus named adaptive ionic layer epitaxy (AILE). The electronic properties of ZnO nanosheets and AILE of other materials are also investigated.

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Citations

Jul 9, 2016·The Journal of Physical Chemistry Letters·Nicolas R Chevalier, Patrick Guenoun
Mar 18, 2017·Chemical Reviews·Chaoliang TanHua Zhang
Mar 31, 2017·ACS Applied Materials & Interfaces·Zheng WangZhizhen Ye
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Jul 15, 2017·Advanced Materials·Ruiqing ChengJun He
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Jan 16, 2021·Advanced Materials·Shasha ZhaoLei Fu
Jan 20, 2021·Nature Materials·Bao Yue ZhangJian Zhen Ou
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Apr 28, 2018·ACS Nano·Longfei WangZhong Lin Wang
Nov 2, 2021·ACS Applied Materials & Interfaces·Chi-Hsin HuangKenji Nomura

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Methods Mentioned

BETA
scanning electron microscopy
atomic force microscopy
electron diffraction

Software Mentioned

AILE

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