Effects of Bubbling N2 or O2 Gas in Syntheses of Gold Nanocrystals Using a Polyol Method

DOI PDF 2 Citations 6 References
  • Masaharu Tsuji
    Institute for Materials Chemistry and Engineering, Kyushu University
  • Daisuke Ueyama
    Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University
  • Md Jahangir Alam
    Department of Applied Science for Electronics and Materials, Graduate School of Engineering Sciences, Kyushu University

Abstract

<jats:title>Abstract</jats:title> <jats:p>Shapes and sizes of Au nanocrystals prepared by reducing HAuCl4 in ethylene glycol (EG) depended strongly on the presence of O2 in EG. At 110 °C icosahedrons, one-dimensional (1-D) rods and wires, and spherical particles were major products under bubbling N2 gas, whereas octahedrons and nanoplates were dominant products under bubbling O2 gas. At 198 °C decahedrons and icosahedrons were major products under bubbling N2 gas, whereas the yields of larger octahedrons, nanoplates, and spherical particles increased under bubbling O2 gas. These results show that bubbling N2 or O2 gas at different temperatures can be used as a new experimental parameter for the shape- and size-controlled synthesis of Au nanostructures.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 38 (6), 618-619, 2009-05-23

    Oxford University Press (OUP)

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