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- W4322754578 endingPage "110579" @default.
- W4322754578 startingPage "110579" @default.
- W4322754578 abstract "Etching anisotropy (or crystal-facet selectivity) is a common phenomenon in chemical etching and has widely been implemented to tailor micro/nanostructures with fascinating morphologies, architectures and properties. We here demonstrate for the first time the anisotropy in wet etching of layer-structured two-dimensional (2D) tin monosulfide (SnS) polygonal microflakes. A thiol−amine mixture solvent (ethanedithiol-ethylenediamine, EDT-en) is used as an etchant, which dissolves SnS by the formation of a soluble Sn(II) dithiolate coordination ions. Detailed analyses on the layered crystal structure and SEM/HRTEM images reveal that SnS polygonal microflakes are enclosed by the undercoordinated {0 1 0}, {0 0 1}, and {0 1 1} facets at the lateral surfaces and by the fully-coordinated {1 0 0} facets at the upper and lower surfaces, which enables a preferential etching of lateral-surface, undercoordinated vertices and edges to transform polygonal microflakes into curved or nearly-rounded and then into irregular-shaped micro-/nanoflakes. Meanwhile, a relatively slow etching occurring at the upper/lower surfaces decreases the thickness of SnS 2D crystals. This work opens up the feasibility to make 2D layered crystals of inorganic-nonmetallic chalcogenides with specific size, shape, and crystal surface by means of etching chemistry in suitable etchants." @default.
- W4322754578 created "2023-03-03" @default.
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- W4322754578 date "2023-05-01" @default.
- W4322754578 modified "2023-10-09" @default.
- W4322754578 title "Etching anisotropy in two-dimensional SnS layered crystals using a thiol-amine solvent mixture as an etchant" @default.
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- W4322754578 doi "https://doi.org/10.1016/j.inoche.2023.110579" @default.
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