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      https://www.ias.ac.in/article/fulltext/boms/043/0323

    • Keywords

       

      Hexagonal plates; template-driven growth; semiconductors; nanoplates; spiral; pillar structure.

    • Abstract

       

      Ultrathin 2D metal sulphide nanostructures have revealed extraordinary properties, applications and thus, the subject matter of current research. However, synthesis of shape-controlled large-sized (approximately few $\mu$ms) plates/sheets are not well known, specifically due to the colloidal synthesis process resulting in the distribution of shape/size. Here, we report the template-assisted growth of large-sized CuS nanoplates ($\sim$0.5–9 $\mu$m) by simple wet chemistry, where the Au microplates serve as a template. The Au microplates act as seed and facilitate the Au-Cu via epitaxial growth of Cu. Later, the Au-Cu acts as the source of Cu and in presence of aqueous S$^{2-}$, the CuS hexagons form, however, the edge of the hexagons are parallel to the Au seed and thus, hinting to be controlled by the seed. Interestingly, the substrateindependent Au-Cu can even provide the platform for the spiral nanoplates, by simply decorating the outer surface of the Cu with pillar-like features.

    • Author Affiliations

       

      CHAITALI SOW1 GANGAIAH METTELA1 GIRIDHAR U KULKARNI1

      1. Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru 560064, India
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