Seed-mediated gold nanoparticle synthesis via photochemical reaction of benzoquinone

Yasuhiko Ohara, Keita Akazawa, Kenichi Shibata, Tetsuya Hirota, Yojiro Kodama, Takashi Amemiya, Jichang Wang, Tomohiko Yamaguchi

Research output: Contribution to journalArticle

Abstract

In this study, the synthesis of gold nanoparticles via a three-step reaction including a two-step photochemical reaction of 1,4-benzoquinone was demonstrated. The nanoparticles were formed by adding new gold ions to a solution containing seed nanoparticles pre-synthesized with hydroquinone and its oxidized form, 1,4-benzoquinone, by irradiating the solution with visible light. The diameter of the formed nanoparticles depended on the concentration of seed particles, with a higher seed particle concentration yielding smaller nanoparticles. The gold nanoparticles were characterized using UV-visible spectroscopy, transmission and scanning electron microscopy, and dynamic light scattering. Additionally, the synthesis of gold nanoparticles via photoreduction by benzoquinone is suggested to be a two-electron reduction reaction based on the photochemistry of benzoquinone and the pH change of the solution before and after irradiation.

Original languageEnglish
Article number124209
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume586
DOIs
Publication statusPublished - 5 Feb 2020

Fingerprint

Photochemical reactions
quinones
Gold
photochemical reactions
Seed
seeds
gold
Nanoparticles
nanoparticles
synthesis
Dynamic light scattering
benzoquinone
light scattering
Irradiation
Spectroscopy
Ions
Transmission electron microscopy
transmission electron microscopy
Scanning electron microscopy
scanning electron microscopy

Keywords

  • Benzoquinone
  • Gold nanoparticle
  • Hydroquinone
  • Photoreaction
  • Reductant recyling

Cite this

Ohara, Yasuhiko ; Akazawa, Keita ; Shibata, Kenichi ; Hirota, Tetsuya ; Kodama, Yojiro ; Amemiya, Takashi ; Wang, Jichang ; Yamaguchi, Tomohiko. / Seed-mediated gold nanoparticle synthesis via photochemical reaction of benzoquinone. In: Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2020 ; Vol. 586.
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Seed-mediated gold nanoparticle synthesis via photochemical reaction of benzoquinone. / Ohara, Yasuhiko; Akazawa, Keita; Shibata, Kenichi; Hirota, Tetsuya; Kodama, Yojiro; Amemiya, Takashi; Wang, Jichang; Yamaguchi, Tomohiko.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 586, 124209, 05.02.2020.

Research output: Contribution to journalArticle

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AU - Ohara, Yasuhiko

AU - Akazawa, Keita

AU - Shibata, Kenichi

AU - Hirota, Tetsuya

AU - Kodama, Yojiro

AU - Amemiya, Takashi

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