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- W2019922165 abstract "Abstract The structure, composition, morphology, and support material significantly affect the catalytic characteristics of Pt-based nanocatalysts. Fine control of the structural and compositional features is highly favorable for the creation of new Pt-based nanocatalysts with enhanced catalytic performance and improved Pt utilization. This work reports on a systematic and comparative study of the effects of structure, composition, and carbon support properties on the electrocatalytic activity and stability of Pt-Ni bimetallic catalysts for methanol oxidation, particularly the promoting effect of Ni on Pt. Graphene-supported Pt-Ni alloy nanocatalysts were prepared by a facile, one-step chemical reduction of graphene oxide and the precursors of Ni2+ and PtCl62−. The nanocatalysts were characterized by transmission electron microscopy (TEM), ultraviolet–visible spectrophotometry (UV–vis), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The electrocatalytic characteristics of the nanocatalysts were studied by voltammetry with methanol oxidation as a model reaction to evaluate the effects of the structure, surface composition, and electronic characteristics of the catalyst on the electrochemical activity. The catalyst with a Pt/Ni molar ratio of 1:1 exhibited the highest electrocatalytic activity for the methanol oxidation reaction with greatly lowered Pt utilization. The mechanism of the promoting effect of Ni on Pt is explained based on the modification of the electronic characteristics of the surface Pt atoms (Pt 4f) by Ni atoms due to the shift in the electron transfer from Ni to Pt and the synergistic roles of Pt and nickel hydroxides on the surfaces of the catalysts. The effects of the different carbon supports (i.e., graphene, single-walled carbon nanotubes, and Vulcan XC-72 carbon) on the electrocatalytic characteristics of the nanocatalysts are investigated by Raman and XPS experiments. The results demonstrate that the graphene-supported Pt-Ni catalyst has the highest electrocatalytic activity of the three carbon materials due to abundant oxygen-containing groups on the graphene surface, which can remove the poisoned intermediates and improve the electrocatalytic activity of the catalysts." @default.
- W2019922165 created "2016-06-24" @default.
- W2019922165 creator A5003759585 @default.
- W2019922165 creator A5017278395 @default.
- W2019922165 creator A5041742932 @default.
- W2019922165 creator A5067547444 @default.
- W2019922165 creator A5069068048 @default.
- W2019922165 date "2012-01-01" @default.
- W2019922165 modified "2023-09-27" @default.
- W2019922165 title "Effects of structure, composition, and carbon support properties on the electrocatalytic activity of Pt-Ni-graphene nanocatalysts for the methanol oxidation" @default.
- W2019922165 cites W1270022257 @default.
- W2019922165 cites W1480171480 @default.
- W2019922165 cites W1966300235 @default.
- W2019922165 cites W1967862276 @default.
- W2019922165 cites W1968365176 @default.
- W2019922165 cites W1969902345 @default.
- W2019922165 cites W1970584463 @default.
- W2019922165 cites W1971745686 @default.
- W2019922165 cites W1971794149 @default.
- W2019922165 cites W1972813610 @default.
- W2019922165 cites W1978731769 @default.
- W2019922165 cites W1978909278 @default.
- W2019922165 cites W1981160289 @default.
- W2019922165 cites W1985955214 @default.
- W2019922165 cites W1987707732 @default.
- W2019922165 cites W1987986418 @default.
- W2019922165 cites W1989741190 @default.
- W2019922165 cites W1989823938 @default.
- W2019922165 cites W1992275743 @default.
- W2019922165 cites W1992542515 @default.
- W2019922165 cites W1997634886 @default.
- W2019922165 cites W1998120740 @default.
- W2019922165 cites W1998704602 @default.
- W2019922165 cites W1999235232 @default.
- W2019922165 cites W1999611253 @default.
- W2019922165 cites W1999803970 @default.
- W2019922165 cites W2000428049 @default.
- W2019922165 cites W2000784170 @default.
- W2019922165 cites W2003948500 @default.
- W2019922165 cites W2007112637 @default.
- W2019922165 cites W2007389751 @default.
- W2019922165 cites W2007862398 @default.
- W2019922165 cites W2011567652 @default.
- W2019922165 cites W2015976563 @default.
- W2019922165 cites W2021880540 @default.
- W2019922165 cites W2022520890 @default.
- W2019922165 cites W2023705735 @default.
- W2019922165 cites W2023897739 @default.
- W2019922165 cites W2026406717 @default.
- W2019922165 cites W2026901717 @default.
- W2019922165 cites W2027287454 @default.
- W2019922165 cites W2029927391 @default.
- W2019922165 cites W2032531626 @default.
- W2019922165 cites W2039453064 @default.
- W2019922165 cites W2040788738 @default.
- W2019922165 cites W2041387766 @default.
- W2019922165 cites W2044715142 @default.
- W2019922165 cites W2050843342 @default.
- W2019922165 cites W2052405406 @default.
- W2019922165 cites W2052471613 @default.
- W2019922165 cites W2053926431 @default.
- W2019922165 cites W2058359352 @default.
- W2019922165 cites W2058392394 @default.
- W2019922165 cites W2063392900 @default.
- W2019922165 cites W2063551243 @default.
- W2019922165 cites W2064814712 @default.
- W2019922165 cites W2064940240 @default.
- W2019922165 cites W2067764397 @default.
- W2019922165 cites W2069988560 @default.
- W2019922165 cites W2070084574 @default.
- W2019922165 cites W2070734988 @default.
- W2019922165 cites W2071902613 @default.
- W2019922165 cites W2072214543 @default.
- W2019922165 cites W2072726072 @default.
- W2019922165 cites W2073198369 @default.
- W2019922165 cites W2075700615 @default.
- W2019922165 cites W2080375271 @default.
- W2019922165 cites W2083871509 @default.
- W2019922165 cites W2086632270 @default.
- W2019922165 cites W2086973557 @default.
- W2019922165 cites W2087706476 @default.
- W2019922165 cites W2089000552 @default.
- W2019922165 cites W2089365714 @default.
- W2019922165 cites W2089935847 @default.
- W2019922165 cites W2090728695 @default.
- W2019922165 cites W2093466671 @default.
- W2019922165 cites W2104154679 @default.
- W2019922165 cites W2107090108 @default.
- W2019922165 cites W2114926784 @default.
- W2019922165 cites W2123198680 @default.
- W2019922165 cites W2134313088 @default.
- W2019922165 cites W2152103620 @default.
- W2019922165 cites W2155302526 @default.
- W2019922165 cites W2169660387 @default.
- W2019922165 cites W2170037760 @default.
- W2019922165 cites W2212471210 @default.
- W2019922165 cites W2312742576 @default.
- W2019922165 cites W2313257772 @default.