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Journal of colloid and interface science v.512, 2018년, pp.96 - 104   SCI SCIE
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One-pot fabrication of N-doped graphene supported dandelion-like PtRu nanocrystals as efficient and robust electrocatalysts towards formic acid oxidation

Xu, Hui (College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China ) ; Yan, Bo (College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China ) ; Li, Shumin (College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China ) ; Wang, Jin (College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China ) ; Wang, Caiqin (Chemistry Department, University of Toronto, Toronto M5S3H4, Canada ) ; Guo, Jun (Testing & Analysis Center, Soochow University, Jiangsu 215123, PR China ) ; Du, Yukou (College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China ) ;
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    Abstract Engineering the architectures of metal nanocatalysts offers a valid approach for the development of electrocatalysts with greatly enhanced performances. Herein, we report the one-pot method to successfully fabricate the N-doped graphene (NG) supported dandelion-like PtRu nanocrystals. Such dandelion-like nanocrystals with different compositions can be readily tuned via the addition of different amounts of RuCl 3 . By virtue of the large accessible surface active areas, synergistic and electronic effect, as well as the successful introduction of NG, the as-obtained PtRu/NG with optimized compositions display outstandingly high electrocatalytic activity towards formic acid electrooxidation with the mass and specific activities of 1857.4mAmg −1 and 18.3mAcm −2 , 6.3 and 3.3 times higher than those of commercial Pt/C, respectively. Moreover, the Pt 1 Ru 1 /NG can endure at least 500 cycles with less activity decay, showing a new class of Pt-based electrocatalysts with enhanced performance for fuel cells and beyond. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    One-pot method .   Dandelion-like .   N-doped graphene .   Formic acid electrooxidation.  

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