In this study, gold polyhedral arrays were successfully fabricated via a seed-mediated in-situ growth method. The effects of chloroauric acid (HAuCl4) concentration and polyvinylpyrrolidone (PVP) concentration on the morphology of the arrays were systematically investigated. Periodically arranged two-dimensional gold nanosphere arrays were first prepared on silicon substrates as seed layers using a polystyrene colloidal sphere monolayer template combined with magnetron sputtering. Subsequently, well-defined and orderly arranged gold polyhedral arrays were constructed through the seed-mediated in-situ growth method, employing N, N-dimethylformamide (DMF) as the reducing agent, PVP as both the surfactant and capping agent, and HAuCl4 as the gold precursor. The influence of reactant concentrations on the array morphology was also discussed. Scanning electron microscopy characterization reveals that the as-prepared gold polyhedral arrays exhibit uniform distribution and well-defined periodic features. This strategy provides a novel technical route for the morphology-controlled construction of two-dimensional noble metal nanostructure arrays.
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Jiang, S., He, Y., Cao, Y., Wang, J. (2025) Fabrication and Tuning of Gold Polyhedron Arrays. Scientific Research Bulletin, 2(4), 80-84.https://doi.org/10.71052/hkfb2025/FZKQ8926