• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Fine-tuning the Cross-Sectional Architecture of Antimony- doped Tin Oxide Nanofibers as Pt Catalyst Support for Enhanced Oxygen Reduction Activity
【24h】

Fine-tuning the Cross-Sectional Architecture of Antimony- doped Tin Oxide Nanofibers as Pt Catalyst Support for Enhanced Oxygen Reduction Activity

机译：微调锑掺杂氧化锡纳米纤维的横截面架构作为Pt催化剂载体，用于增强氧还原活性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report the fabrication of electrospun antimony-doped tin oxides (ATO) nanofibers (NFs) with controlled cross-sectional architectures ranging from solid dense NFs via fiber-in-tube NFs to completely hollow tube-like NFs at otherwise constant conditions. These ATO NFs were further applied as catalyst supports on which Pt nanoparticles were electrodeposited. Our results show that the Pt nanoparticles deposited on the hollow ATO NFs exhibited a higher catalytic activity on oxygen reduction reaction compared to those supported on solid ATO NFs and conventional ATO powders. Transmission electron microscopy revealed that the Pt nanoparticles deposited on the hollow ATO NFs were spontaneously confined into the hollow channels of the NFs, which likely induced a nano- confinement effect and hence higher catalytic activity. Our results provide important insight into rational control of the mesostructures of metal oxides supported fuel cell catalysts for enhance catalytic properties.
机译：我们报告了电纺锑掺杂的氧化锡（ATO）纳米纤维（ATO）纳米纤维（NFS）的制造，该横截面架构通过纤维管NFS从固体致密NFS从固体致密NFS施加到完全中空的管状NFS，否则恒定的条件。将这些ATO NFS进一步应用于其中电沉积PT纳米颗粒的催化剂载体。我们的结果表明，与固体ATO NFS和常规ATO粉末负载的那些相比，沉积在中空ATO NF上的PT纳米粒子在氧还原反应上表现出更高的催化活性。透射电子显微镜显示，沉积在中空ATO NFS上的PT纳米颗粒自发地限制在NFS的中空通道中，这可能诱导纳米限制效果并因此催化活性。我们的研究结果提供了对金属氧化物型燃料电池催化剂的思科的理性控制的重要洞察，以增强催化性能。

著录项

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