Journal
ANALYTICAL METHODS
Volume 5, Issue 21, Pages 6058-6063Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ay41286e
Keywords
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Funding
- National Natural Science Foundation of China [21075092]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2010-KF-12]
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, China
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AgPd nanoparticles were assembled on ionic liquid-functionalized graphene by electrostatic interaction to form a graphene-metal composite. The resulting hybrid nanomaterial was characterized by transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and ultraviolet-visible absorption spectrophotometry. The AgPd nanoparticles were confirmed to be alloy and they were well dispersed on the ionic liquid-functionalized graphene sheets. The hybrid nanomaterial showed striking electrocatalytic activity toward the reduction of trichloroacetic acid (TCA). At the hybrid nanomaterial modified glassy carbon electrode, TCA exhibited a cathodic peak at about -0.65 V (vs. SCE) in pH 7 phosphate buffer solution, which was further enhanced by cetyltrimethylammonium bromide. Under the optimal conditions, the determination of TCA was performed with a linear range of 0.5-50 mu M and a detection limit of 0.2 mM (S/N = 3).
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