...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Bio-inspired chitosan-heme-vitamin B-12-derived Fe-Co bimetallic-doped mesoporous carbons for efficiently electro-activating oxygen
【24h】

Bio-inspired chitosan-heme-vitamin B-12-derived Fe-Co bimetallic-doped mesoporous carbons for efficiently electro-activating oxygen

机译：生物启发的壳聚糖 - 血红素 - 维生素B-12衍生的Fe-Co双金属掺杂的介孔碳，用于有效地电激活氧气

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

A bio-inspired bimetallic Fe- and Co-doped nitrogen-carbon material (Fe-Co-N-C) was synthesized using chitosan and porphyrin-like heme and vitamin B-12 precursors. Anionic heme with Fe-N-4 moieties and vitamin B-12 with Co-N-4 moieties were grafted onto the surface of acidic chitosan polymers through interactions with cationic -NH3+, and these polymers were coated onto nano-sized silica spheres to form the composite precursors. The optimised thermolysis of these composites yielded mesoporous carbons with abundant surface Fe-N-x and Co-N-x sites. The as-prepared Fe-Co-N-Cs catalyzed the oxygen reduction reaction (ORR) in both alkaline and acidic conditions. It not only provided a low-cost bio-inspired synthesis for bimetal-doped carbons using biologics with the definitive molecular structure but also the as-prepared mesoporous Fe-Co-N-Cs represented as the possible NPMC candidates for replacing Pt-based electrocatalysts in fuel cells.
机译：使用壳聚糖和卟啉样血红素和维生素B-12前体合成了生物启发的双金属配氮和共掺杂的氮气 - 碳材料（Fe-Co-N-C）。 通过与阳离子-NH3 +的相互作用接枝具有CE-N-4部分的阴离子血红素和具有CO-N-4部分的维生素B-12，将这些聚合物涂覆到纳米尺寸的硅球上以形成 复合前体。 这些复合材料的优化热解产生了具有丰富的表面Fe-N-X和Co-N-X位点的中孔碳。 制备的Fe-Co-N-Cs催化碱性和酸性条件下的氧还原反应（ORR）。 它不仅为使用具有确定性分子结构的生物学的生物学提供了低成本的生物启发合成，还使用生物学制备的制备的介孔Fe-Co-N-Cs作为可能的NPMC候选，用于更换基于PT基电催化剂 在燃料电池中。

著录项

  • 来源
  • 作者

    Ma Zifan; Xu Longdi; Liu Luyao; Wang Luyao; Zhang Xiaoying; Kong Aiguo;

  • 作者单位

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

    East China Normal Univ Sch Chem &

    Mol Engn 500 Dongchuan Rd Shanghai 200241 Peoples R China;

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