Effect of pH on the spontaneous synthesis of palladium nanoparticles on reduced graphene oxide

Xiaorui Zhang, Wataru Ooki, Yoshinori R. Kosaka, Akinori Okonogi, Galina Marzun, Philipp Wagener, Stephan Barcikowski, Takahiro Kondo, Junji Nakamura

研究成果: ジャーナルへの寄稿学術誌査読

20 被引用数 (Scopus)

抄録

Palladium (Pd) nanoparticles were spontaneously deposited on reduced graphene oxide (rGO) without any external reducing agents. The prepared Pd/rGO composites were then characterized by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Spontaneous deposition occurred because of a redox reaction between the Pd precursor and rGO, which involved reduction of bivalent Pd to metallic Pd 0 and oxidation of the sp 2 carbon of rGO to oxygen-containing functional groups. The amount of Pd deposited on rGO varied with pH, and this was attributed to electrostatic interactions between the Pd precursor and rGO based on the results of zeta potential measurements. The importance of the redox reaction in the spontaneous deposition was demonstrated in the experiment with Zn, Ni, Cu, Ag, Pt, Pd, and Au.

本文言語英語
ページ(範囲)911-915
ページ数5
ジャーナルApplied Surface Science
389
DOI
出版ステータス出版済み - 12月 15 2016
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学一般
  • 凝縮系物理学
  • 物理学および天文学一般
  • 表面および界面
  • 表面、皮膜および薄膜

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