Self-assembled palladium nanoflowers supported on fullerene: Electrochemical catalytic performance for the reduction of 4-nitrophenol

Zhongping Li*, Yuxin Zhang, Ruiqi Zhu, Guangming Wen, Chuan Dong, Hung Wing Li

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

17 Citations (Scopus)

Abstract

Loading metal nanoparticles on the surface of nanosheet supports is an attractive approach to enhancing their catalytic performance. Herein, palladium nanoflowers (Pd NFs) were prepared on amino-functionalized fullerene (C60-NH2) by hydrothermal self-assembly using ethylenediamine (EA). Reduction of Pd ions resulted in the formation of Pd nanoflowers with a fullerene bottom layer and Pd petals. Ethylenediamine, a functionalized fullerene precursor, afforded a nitrogen-rich fullerene that ensures strong interactions between Pd2+ and functionalized fullerene and improves the chemical and morphological stability of the resulting Pd nanoflowers. Compared with spherical Pd nanoparticles supported on amino-functionalized fullerene (C60-NH2), the Pd nanoflowers (Pd NFs/C60-NH2) exhibit greatly superior activity towards the reduction of 4-nitrophenol (4-NP). The nanoflowers exhibit not only a remarkable UV–vis response for the conversion of 4-nitrophenol to 4-aminophenol (4-AP) (99% in 2.0 min) with a turnover frequency of 12.35 min−1 but also a high electrochemical sensitivity to 4-nitrophenol over a wide linear concentration range (5–1000 μM), providing a detection limit of 0.09 μM (S/N = 3) at room temperature. The excellent catalytic stability and durability of Pd NFs/C60-NH2 offer promising applications in catalysis.

Original languageEnglish
Article number106484
JournalElectrochemistry Communications
Volume104
DOIs
Publication statusPublished - Jul 2019

Scopus Subject Areas

  • Electrochemistry

User-Defined Keywords

  • 4-Nitrophenol reduction
  • Fullerene (C)
  • Pd nanoflowers
  • Self-assembly

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