Synthesis of PtNi Alloy Nanoparticles on Graphene-Based Polymer Nanohybrids for Electrocatalytic Oxidation of Methanol
作者： Tung-Yuan Yung , Ting-Yu Liu , Kuan-Syun Wang , Che-Chun Liu , Shih-Hsuan Wang
DOI: 10.3390/CATAL6120201
关键词:
摘要: We have successfully produced bimetallic PtNi alloy nanoparticles on poly(diallyldimethylammonium chloride) (PDDA)-modified graphene nanosheets (PtNi/PDDA-G) by the “one-pot” hydrothermal method. The size of is approximately 2–5 nm. PDDA-modified (PDDA-G) provides an anchored site for metal precursors; hence, could be easily bond PDDA-G substrate. (2–5 nm) display a homogenous phase embedded substrate, evaluated Raman, X-ray diffractometer (XRD), thermal gravity analysis (TGA), electron surface chemical (ESCA), and energy loss spectroscopy (EELS). Pt/Ni ratio ~1.7, examined dispersive (EDS) spectra transmitting microscopy (EDS/TEM spectra) mapping technique. methanol electro-oxidation PtNi/PDDA-G was cyclic voltammetry (CV) in 0.5 M H2SO4 CH3OH. Compared to Pt carbon (Pt/C) Graphene (Pt/G), exhibits optimal electrochemical area (ECSA), oxidation reaction (MOR) activity, durability chrono amperometry (CA) test, which can candidate MOR electro-catalysis direct fuel cells (DMFC).
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