New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

Qing Li; Liheng Wu; Gang Wu; Dong Su; Haifeng Lv; Sen Zhang; Wenlei Zhu; Anix Casimir; Huiyuan Zhu; Adriana Mendoza-Garcia; Shouheng Sun

doi:10.1021/acs.nanolett.5b00320

New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

Qing Li
, Liheng Wu
, Gang Wu
, Dong Su
, Haifeng Lv
, Sen Zhang
, Wenlei Zhu
, Anix Casimir
, Huiyuan Zhu
, Adriana Mendoza-Garcia
, Shouheng Sun

Department of Chemical and Biological Engineering

Brown University
Brookhaven National Laboratory
SUNY Buffalo

Research output: Contribution to journal › Review article › peer-review

442 Scopus citations

Abstract

Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe₃O₄ NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temperature coercivity reaching 33 kOe. They serve as a robust electrocatalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO₄ and hydrogen evolution reaction (HER) in 0.5 M H₂SO₄ with much enhanced activity (the most active fct-structured alloy NP catalyst ever reported) and stability (no obvious Fe loss and NP degradation after 20 000 cycles between 0.6 and 1.0 V (vs RHE)). Our work demonstrates a reliable approach to FePt NPs with much improved fct-ordering and catalytic efficiency for ORR and HER. (Graph Presented).

Original language	English
Pages (from-to)	2468-2473
Number of pages	6
Journal	Nano Letters
Volume	15
Issue number	4
DOIs	https://doi.org/10.1021/acs.nanolett.5b00320
State	Published - Apr 8 2015

Keywords

electrocatalysis
face-centered tetragonal structure
hydrogen evolution
nanoparticles
oxygen reduction

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10.1021/acs.nanolett.5b00320

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@article{17a8ce681e6c49a8835e1b7d033ffb79,

title = "New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid",

abstract = "Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe3O4 NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temperature coercivity reaching 33 kOe. They serve as a robust electrocatalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO4 and hydrogen evolution reaction (HER) in 0.5 M H2SO4 with much enhanced activity (the most active fct-structured alloy NP catalyst ever reported) and stability (no obvious Fe loss and NP degradation after 20 000 cycles between 0.6 and 1.0 V (vs RHE)). Our work demonstrates a reliable approach to FePt NPs with much improved fct-ordering and catalytic efficiency for ORR and HER. (Graph Presented).",

keywords = "electrocatalysis, face-centered tetragonal structure, hydrogen evolution, nanoparticles, oxygen reduction",

author = "Qing Li and Liheng Wu and Gang Wu and Dong Su and Haifeng Lv and Sen Zhang and Wenlei Zhu and Anix Casimir and Huiyuan Zhu and Adriana Mendoza-Garcia and Shouheng Sun",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = apr,

day = "8",

doi = "10.1021/acs.nanolett.5b00320",

language = "English",

volume = "15",

pages = "2468--2473",

journal = "Nano Letters",

issn = "1530-6984",

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}

TY - JOUR

T1 - New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

AU - Li, Qing

AU - Wu, Liheng

AU - Wu, Gang

AU - Su, Dong

AU - Lv, Haifeng

AU - Zhang, Sen

AU - Zhu, Wenlei

AU - Casimir, Anix

AU - Zhu, Huiyuan

AU - Mendoza-Garcia, Adriana

AU - Sun, Shouheng

PY - 2015/4/8

Y1 - 2015/4/8

N2 - Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe3O4 NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temperature coercivity reaching 33 kOe. They serve as a robust electrocatalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO4 and hydrogen evolution reaction (HER) in 0.5 M H2SO4 with much enhanced activity (the most active fct-structured alloy NP catalyst ever reported) and stability (no obvious Fe loss and NP degradation after 20 000 cycles between 0.6 and 1.0 V (vs RHE)). Our work demonstrates a reliable approach to FePt NPs with much improved fct-ordering and catalytic efficiency for ORR and HER. (Graph Presented).

AB - Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe3O4 NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temperature coercivity reaching 33 kOe. They serve as a robust electrocatalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO4 and hydrogen evolution reaction (HER) in 0.5 M H2SO4 with much enhanced activity (the most active fct-structured alloy NP catalyst ever reported) and stability (no obvious Fe loss and NP degradation after 20 000 cycles between 0.6 and 1.0 V (vs RHE)). Our work demonstrates a reliable approach to FePt NPs with much improved fct-ordering and catalytic efficiency for ORR and HER. (Graph Presented).

KW - electrocatalysis

KW - face-centered tetragonal structure

KW - hydrogen evolution

KW - nanoparticles

KW - oxygen reduction

UR - https://www.scopus.com/pages/publications/84926670663

U2 - 10.1021/acs.nanolett.5b00320

DO - 10.1021/acs.nanolett.5b00320

M3 - Review article

AN - SCOPUS:84926670663

SN - 1530-6984

VL - 15

SP - 2468

EP - 2473

JO - Nano Letters

JF - Nano Letters

IS - 4

ER -

New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

Abstract

Keywords

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