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Advanced Catalytic and Electrocatalytic Performances of Polydopamine‐Functionalized Reduced Graphene Oxide‐Palladium Nanocomposites
Author(s) -
Fu Li,
Lai Guosong,
Zhu Deming,
Jia Baohua,
Malherbe Francois,
Yu Aimin
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201600532
Subject(s) - graphene , nanocomposite , nanoclusters , oxide , catalysis , palladium , materials science , polymerization , chemical engineering , selectivity , inorganic chemistry , fourier transform infrared spectroscopy , nuclear chemistry , chemistry , nanotechnology , organic chemistry , polymer , composite material , engineering , metallurgy
A polydopamine‐functionalized reduced graphene oxide (PDA‐RGO)/Pd nanocomposite was synthesized by a simple wet chemical approach at room temperature. Graphene oxide (GO) was first modified with PDA by the self‐polymerization of dopamine (DA) followed by the deposition of Pd nanoparticles. UV/Vis and FTIR spectroscopies confirmed the reduction of GO to RGO during the self‐polymerization of DA. SEM images revealed that Pd nanoclusters were formed on both sides of the PDA‐RGO sheets. The as‐prepared PDA‐RGO/Pd nanocomposites exhibited excellent catalytic activity in the chemical degradation of methylene blue with a reaction rate constant of 0.6028 min −1 , which was 2.5‐fold faster than that of the PDA/Pd catalyst without RGO. Moreover, the PDA‐RGO/Pd nanocomposite also showed an outstanding electrocatalytic activity towards the electro‐oxidation of paracetamol. The current response had a linear relationship to the concentration of paracetamol in the range of 0.28–100 μ m with a low detection limit of 0.087 μ m (S/N=3). In addition, the sensor also exhibited good selectivity for the detection of paracetamol.