Facile single-step preparation of Pt/N-graphene catalysts with improved methanol electrooxidation activity
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In this work, we describe a facile single-step approach for the simultaneous reduction of graphene oxide to graphene, functional doping of graphene with nitrogen, and loading of the doped graphene with well-dispersed platinum (Pt) nanoparticles using a solvent mixture of ethylene glycol and N-methyl-2-pyrrolidone. The as-prepared Pt/nitrogen-doped graphene (N-graphene) catalysts are characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy while the electrocatalytic methanol oxidation properties of the catalysts are evaluated by cyclic voltammetry and chronoamperometry. Compared with an updoped Pt/graphene control catalyst, the Pt/N-graphene catalyst shows a narrower particle size distribution and improved catalytic performance. Considering the facile, green and effective single-step synthetic process for the Pt/N-graphene catalyst, the results are promising for the potential application of these materials in emerging fuel cell technologies.
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Facile single-step ammonia heat-treatment and quenching process for the synthesis of improved Pt/N-graphene catalystsXiong, B.; Zhou, Y.; O'Hayre, R.; Shao, Zongping (2013)In this work, we present a facile route to prepare electrocatalysts for methanol oxidation. The catalystsynthesis route involves the simultaneous reduction and nitrogen doping of graphene oxide (GO) along with the reduction ...
A General Method for Constructing Two-Dimensional Layered Mesoporous Mono- and Binary-Transition-Metal Nitride/Graphene as an Ultra-Efficient Support to Enhance Its Catalytic Activity and Durability for Electrocatalytic ApplicationLiu, B.; Huo, L.; Si, R.; Liu, Jian; Zhang, J. (2016)© 2016 American Chemical Society. We constructed a series of two-dimensional (2D) layered mesoporous mono- and binary-transition-metal nitride/graphene nanocomposites (TMN/G, TM = Ti, Cr, W, Mo, TiCr, TiW, and TiMo) via ...
The use of nitrogen-doped graphene supporting Pt nanoparticles as a catalyst for methanolelectrocatalytic oxidationXiong, B.; Zhou, Y.; Zhao, Y.; Wang, J.; Chen, X.; O’Hayre, R.; Shao, Zongping (2013)Nitrogen-doped graphene (N-G) was prepared by thermal annealing of graphene oxide in ammonia at different temperatures. The resultant N-G was used as a conductive support for Pt nanoparticles (Pt/N-G) and the electrocatalytic ...