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[交流]
【交流】文章接受 碳管自组装Pt催化氧还原(Applied Catalysis B IF=5.252)
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Applied Catalysis B: Environmental Volume 102, Issues 3-4, 22 February 2011, Pages 372-377 (IF=5.252) 研究亮点: 石墨化碳管电化学稳定性高,但是由于表面缺陷少,普通方法很难在其表面沉积Pt 纳米粒子,而我们用静电自组装方法解决了这一难题。 09年11月投稿,半年后编辑让修改(审稿周期约为5个月),认真修改后,又过半年后,直接接受。这个杂志的效率有点儿低。呵呵! Title: Self-assembly of Pt nanoparticles on highly graphitized carbon nanotubes as an excellent oxygen-reduction catalyst Authors:Sheng Zhang, Yuyan Shao, Geping Yin, Yuehe Lin Address: a School of Chemical Engineering & Technology, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China b Pacific Northwest National Laboratory, Richland, WA 99352, USA Abstract: Platinum nanoparticles/graphitic carbon nanotubes (GCNTs) nanocomposites are fabricated with electrostatic self-assembly technology. Pt precursors are uniformly distributed on poly(diallyldimethylammonium chloride)-functionalized GCNTs surface (PDDA-GCNTs) via the electrostatic interaction and then in situ reduced to Pt nanoparticles in ethylene glycol, where PDDA is not only used as the wrapping polymer for GCNTs to preserve the integrity and the electronic structure of GCNTs, but also facilitates the uniform distribution of Pt nanoparticles on the surface of GCNTs. X-ray diffraction patterns and transmission electron microscope images reveal that Pt nanoparticles with an average size of 2.7 nm are uniformly dispersed on highly graphitized GCNTs. Significant enhancement in the electrocatalytic activity on Pt/PDDA-GCNTs catalyst towards oxygen reduction reaction (ORR) has been demonstrated. In addition, this catalyst also shows enhanced electrochemical durability due to the high graphitization degree of GCNTs. This provides a facile and eco-friendly approach to large-scale production of high performance fuel cell eletrocatalysts. Link: http://www.sciencedirect.com/science/journal/09263373 欢迎交流! [ Last edited by jasonxmc on 2011-2-20 at 08:37 ] |
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