Facile synthesis of fully ordered L 1 0 -FePt nanoparticles with controlled Pt-shell thicknesses for electrocatalysis
作者: Yonghoon HongHee Jin KimDaehee YangGaehang LeeKi Min NamMyung-Hwa JungYoung-Min KimSang-Il ChoiWon Seok Seo
作者单位: 1Sogang University
2Kyungpook National University
3Korea Basic Science Institute and University of Science and Technology
4Mokpo National University
5Institute for Basic Science (IBS)
6Sungkyunkwan University (SKKU)
刊名: Nano Research, 2017, Vol.10 (8), pp.2866-2880
来源数据库: Springer Journal
DOI: 10.1007/s12274-017-1495-5
关键词: FePtFace centered tetragonalBimetallicMethanol oxidation reactionElectrocatalysts
英文摘要: We report a simple one-step approach for the synthesis of ~4 nm uniform and fully L 10-ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) embedded in ~60 nm MCM-41 (fct-FePt NPs@MCM-41). We controlled the Pt-shell thickness of the fct-FePt NPs by treating the fct-FePt NPs@MCM-41 with acetic acid (HOAc) or hydrochloric acid (HCl) under sonication, thereby etching the surface Fe atoms of the NPs. The fct-FePt NPs deposited onto the carbon support (fct-FePt NP/C) were prepared by mixing the fct-FePt NPs@MCM-41 with carbon and subsequently removing the MCM-41 using NaOH. We also developed a facile method to synthesize acid-treated fct-FePt NP/C by using a HF solution for simultaneous surface-Fe etching and MCM-41 removal. We studied the effects of both surface-Fe...
原始语种摘要: We report a simple one-step approach for the synthesis of ~4 nm uniform and fully L 10-ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) embedded in ~60 nm MCM-41 (fct-FePt NPs@MCM-41). We controlled the Pt-shell thickness of the fct-FePt NPs by treating the fct-FePt NPs@MCM-41 with acetic acid (HOAc) or hydrochloric acid (HCl) under sonication, thereby etching the surface Fe atoms of the NPs. The fct-FePt NPs deposited onto the carbon support (fct-FePt NP/C) were prepared by mixing the fct-FePt NPs@MCM-41 with carbon and subsequently removing the MCM-41 using NaOH. We also developed a facile method to synthesize acid-treated fct-FePt NP/C by using a HF solution for simultaneous surface-Fe etching and MCM-41 removal. We studied the effects of both surface-Fe...
全文获取路径: Springer  (合作)
分享到:
来源刊物:
影响因子:7.392 (2012)

×
关键词翻译
关键词翻译
  • shell 贝壳
  • oxidation 氧化
  • ordered 有序的
  • treating 处理
  • removing 删除
  • removal 消去
  • controlled 受控
  • centered 中心馈电的
  • sonication 声裂法
  • synthesis 合成