Reductants in gold nanoparticle synthesis using gas-liquid interfacial discharge plasmas

Qiang Chen, Toshiro Kaneko, Rikizo Hatakeyama

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


We report the origins and types of reductant in the discharge-plasma- induced gold nanoparticle (AuNP) synthesis. The formation of AuNPs by contacting Au(III)-containing solution with plasma is ascribed to two types of reductant generated by plasma-solution interaction, i.e., the shortlived reductants including free, secondary, and hydrated electrons, hydrogen as well as ultraviolet light, and a long-lived reductant, hydrogen peroxide which has normally been regarded as an oxidant in plasma-induced metal nanoparticle synthesis. We expect that the elucidation of the reductants involved will be beneficial for further understanding and control of plasma-induced metal nanoparticle synthesis.

Original languageEnglish
Article number086201
JournalApplied Physics Express
Issue number8
Publication statusPublished - 2012 Aug

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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