Photochemically Controlled Synthesis of Anisotropic Au Nanostructures : Platelet-like Au Nanorods and Six-Star Au Nanoparticles

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xiao Huang
  • Xiaoying Qi
  • Yizhong Huang
  • Shaozhou Li
  • Can Xue
  • Chee Lip Gan
  • Freddy Boey

Detail(s)

Original languageEnglish
Pages (from-to)6196-6202
Journal / PublicationACS Nano
Volume4
Issue number10
Online published6 Oct 2010
Publication statusPublished - 26 Oct 2010
Externally publishedYes

Abstract

We report the shape-controlled synthesis of anisotropic Au nanostructures through TiO2-assisted photochemical reduction of HAuCl4. By using this method, we have successfully synthesized the platelet-like Au nanorods and six-star Au nanoparticles. Importantly, the platelet Au nanorod exhibits the unique asymmetric five-twinned structure. The colloidal TiO2 sols were used as both the photocatalyst to initiate the reaction and the stabilizing agent for the produced Au nanostructures. Significantly, in this photochemical process, the tunable irradiation intensity allows us to kinetically control the crystal evolution at various growth stages, leading to the shape difference of ultimate gold nanostructures. Our synthetic method shows a great potential as an alternative or supplement to the other wet chemical approaches for the shape-control of metallic nanostructures. © 2010 American Chemical Society.

Research Area(s)

  • Au nanoparticles, Au nanorods, Au nanostructures, photochemical synthesis, shape control

Citation Format(s)

Photochemically Controlled Synthesis of Anisotropic Au Nanostructures : Platelet-like Au Nanorods and Six-Star Au Nanoparticles. / Huang, Xiao; Qi, Xiaoying; Huang, Yizhong et al.

In: ACS Nano, Vol. 4, No. 10, 26.10.2010, p. 6196-6202.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review