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Issue 105, 2015
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Synthesis of porous gold nanoparticle/MoS2 nanocomposites based on redox reactions

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Abstract

We describe a facile method for preparing porous gold nanoparticle (Au-NP)/2H-form MoS2 nanocomposites. The Au-NPs were formed by redox reactions between 2-dimensional MoS2 nanoflakes with a 2H-form crystal structure and tetrachloroauric acid (HAuCl4) in a water/ethanol mixture without adding any additional reducing agents. The structures of the Au-NP/MoS2 nanocomposites were influenced by the molar ratio of the Au ion precursor and MoS2, as well as the volume ratio of water and ethanol in the reaction mixture. Ethanol allowed the 2H-MoS2 nanoflakes to maintain their original morphologies after the reaction to serve as the support framework, meanwhile the Au-NPs worked as a junction to construct a 3-dimensional (3D) nanoporous structure. The obtained porous nanocomposites worked as a material for surface enhanced Raman spectroscopy (SERS) due to the formation of many nanoholes with so-called “hot-spots” based on the assembled Au-NPs.

Graphical abstract: Synthesis of porous gold nanoparticle/MoS2 nanocomposites based on redox reactions

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Publication details

The article was received on 03 Aug 2015, accepted on 29 Sep 2015 and first published on 29 Sep 2015


Article type: Paper
DOI: 10.1039/C5RA15421A
Citation: RSC Adv., 2015,5, 86558-86563
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    Synthesis of porous gold nanoparticle/MoS2 nanocomposites based on redox reactions

    X. Yu, T. Shiraki, S. Yang, B. Ding and N. Nakashima, RSC Adv., 2015, 5, 86558
    DOI: 10.1039/C5RA15421A

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