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

Xiaojing Yu, Tomohiro Shiraki, Shengchun Yang, Bingjun Ding, Naotoshi Nakashima

Research output: Contribution to journalArticle

12 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)86558-86563
Number of pages6
JournalRSC Advances
Volume5
Issue number105
DOIs
Publication statusPublished - Jan 1 2015

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Redox reactions
Gold
Nanocomposites
Ethanol
Nanoparticles
Water
Reducing Agents
Reducing agents
Raman spectroscopy
Crystal structure
Ions
Acids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Synthesis of porous gold nanoparticle/MoS2 nanocomposites based on redox reactions. / Yu, Xiaojing; Shiraki, Tomohiro; Yang, Shengchun; Ding, Bingjun; Nakashima, Naotoshi.

In: RSC Advances, Vol. 5, No. 105, 01.01.2015, p. 86558-86563.

Research output: Contribution to journalArticle

Yu, Xiaojing ; Shiraki, Tomohiro ; Yang, Shengchun ; Ding, Bingjun ; Nakashima, Naotoshi. / Synthesis of porous gold nanoparticle/MoS2 nanocomposites based on redox reactions. In: RSC Advances. 2015 ; Vol. 5, No. 105. pp. 86558-86563.
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