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Ternary pt/re/sno2/c catalyst for EOR:Electrocatalytic activity and durability enhancement

Nano research 2020年第3期13卷 832-842页

作者： Elzbieta Drzymala Grzegorz Gruze Joanna Depciuch Miroslawa Pawlyta Mikołaj Donten Magdalena Parlinska-Wojtan Institute of Nuclear Physics Polish Academy of Sciences PL-31342 KrakowPoland Institute of Engineering Materials and Biomaterials Silesian University of TechnologyGliwice 44-100Poland Faculty of chemistry University of WarsawWarsaw 02-093Poland

carbon-supported pt/c,pt/re/c,pt/sno2/c and pt/re/sno2/c,with 20 wt.%overall metal loading were prepared and their electrochemical activity towards ethanol oxidation reaction(EOR)was *** electron microscopy(TEM)combined with energy dispersive X-ray spectroscopy(EDS)revealed,that indeed binary and ternary combinations of the designed nanoparticles(NPs)were formed and successfully uniformly deposited on a carbon *** transform infrared spectroscopy(FTIR)allowed to assess the chemical composition of the nanocatalysts and X-ray diffraction(XRD)allowed to determine the catalyst *** and chronoamperometric measurements were used to establish its catalytic activity and *** influence of re addition on the electrochemical activity towards ethanol oxidation reaction(EOR)was ***,the addition of re to the binary pt/sno2/c catalyst leads to the formation of ternary pt/re/sno2/c with physical contact between the individual NPs,enhancing the ***,the onset potential of the synthesized ternary catalyst is shifted to more negative potentials and the current densities and specific activity are nearly 11 and 5 times higher,respectively,than for commercial pt *** ternary pt/re/sno2/c catalyst retained 96%of its electrochemical surface area.

关键词： chemical synthesis transmission electron microscopy(TEM)characterization electrochemistry ethanol oxidation reaction(EOR) pt/re/sno2/c catalysts ternary catalysts

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