• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Nitrogen-doped ordered mesoporous carbon sphere with short channel as an efficient metal-free catalyst for oxygen reduction reaction
【24h】

Nitrogen-doped ordered mesoporous carbon sphere with short channel as an efficient metal-free catalyst for oxygen reduction reaction

机译：氮掺杂有序的介孔碳球，具有短通道作为一种有效的无金属催化剂，用于氧还原反应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Nitrogen-doped ordered mesoporous carbon spheres (N-OMCS) were fabricated by an efficient aqueous self-assembly process with F127 as a template, phenol resin and dicyandiamide (DCDA) as carbon and nitrogen sources respectively. It was found that the N-OMCS displayed the homogeneous nitrogen dispersion, well-defined monodispersed spherical morphology with ordered mesoporous structure as well as short channel. The prepared N-OMCS-1.5-900 showed good catalytic activity, excellent stability and resistance to methanol oxidation in oxygen reduction reaction (ORR). The significant electrocatalytic performance could be attributed to the formation of carbon spheres with ordered mesoporous structure and short channel, which not only facilitated the mass transfer, but also provided abundant active sites on the surface. In addition, the graphitic degree and the different nitrogen species of N-OMCS-1.5-900 also played an important role in ORR. The successful synthesis and application of N-OMCS could provide a feasible method for the fabrication of heteroatom-doped ordered mesoporous carbon nanospheres and may also boost the development of the efficient metal-free electrocatalysts.
机译：通过用F127作为模板，酚醛树脂和双氰胺（DCDA）分别为碳和氮源的有效含水自组装方法制造氮掺杂的介孔碳球（N-OMCS）。发现N-OMCS显示均匀的氮分散，定义的单分散球形形态与有序的介孔结构以及短沟道。制备的N-OMCS-1.5-900显示出良好的催化活性，优异的稳定性和对氧氧氧化在氧还原反应中的氧化（ORR）。显着的电催化性能可能归因于具有有序的介孔结构和短沟道的形成碳球，这不仅促进了传质，而且还提供了表面上的丰富活性位点。此外，N-OMCS-1.5-900的石墨度和不同氮气在ORR中起重要作用。 N-OMC的成功合成和应用可以提供一种可行的方法，用于制备杂原子掺杂的有序的介孔碳纳米球，也可以提高无需无金属电催化剂的发展。

著录项

  • 来源
    《RSC Advances》 |2015年第86期|共7页
  • 作者

    Li Jinlei; Li Zelong; Tong Jinhui; Xia Chungu; Li Fuwei;

  • 作者单位

    Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Oxo Synth &

    Select Oxidat Lanzhou 730000 Peoples R China;

    Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Oxo Synth &

    Select Oxidat Lanzhou 730000 Peoples R China;

    Northwest Normal Univ Lanzhou 730000 Peoples R China;

    Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Oxo Synth &

    Select Oxidat Lanzhou 730000 Peoples R China;

    Chinese Acad Sci Lanzhou Inst Chem Phys State Key Lab Oxo Synth &

    Select Oxidat Lanzhou 730000 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号