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Title: Plating Precious Metals on Nonprecious Metal Nanoparticles for Sustainable Electrocatalysts

Abstract

Precious metals have broad applications in modern industry and renewable energy technologies. The high cost and limited availability of these materials, however, have caused a grand challenge for sustainability. In this work, we report on the plating of a precious metal on nonprecious metal nanoparticles for the development of sustainable electrocatalysts. Cobalt/platinum core/shell (denoted as Co@Pt) nanoparticles were synthesized via seed-mediated growth. The Co seeds were first synthesized by thermal decomposition of cobalt carbonyl, and the Pt shell was overgrown in situ by adding platinum acetylacetonate (Pt(acac)2). The galvanic replacement reaction between Co and the Pt precursor was successfully suppressed by taking advantage of CO (generated from the decomposition of cobalt carbonyl) as the stabilizing ligand and/or reducing agent. Moreover, the obtained Co@Pt nanoparticles were found to exhibit enhanced catalytic activity for the oxygen reduction reaction (ORR).

Authors:
 [1];  [2];  [3];  [1];  [1]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [1]
  1. Johns Hopkins Univ., Baltimore, MD (United States)
  2. Purdue Univ., West Lafayette, IN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Chinese Academy of Sciences (CAS), Suzhou (China)
  5. Purdue Univ., West Lafayette, IN (United States)s
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF)
OSTI Identifier:
1484724
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 17; Journal Issue: 6; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Core/shell nanoparticles; cobalt; platinum; precious metal catalysts; oxygen reduction reaction

Citation Formats

Wang, Lei, Zeng, Zhenhua, Ma, Cheng, Liu, Yifan, Giroux, Michael, Chi, Miaofang, Jin, Jian, Greeley, Jeffrey, and Wang, Chao. Plating Precious Metals on Nonprecious Metal Nanoparticles for Sustainable Electrocatalysts. United States: N. p., 2017. Web. https://doi.org/10.1021/acs.nanolett.7b00046.
Wang, Lei, Zeng, Zhenhua, Ma, Cheng, Liu, Yifan, Giroux, Michael, Chi, Miaofang, Jin, Jian, Greeley, Jeffrey, & Wang, Chao. Plating Precious Metals on Nonprecious Metal Nanoparticles for Sustainable Electrocatalysts. United States. https://doi.org/10.1021/acs.nanolett.7b00046
Wang, Lei, Zeng, Zhenhua, Ma, Cheng, Liu, Yifan, Giroux, Michael, Chi, Miaofang, Jin, Jian, Greeley, Jeffrey, and Wang, Chao. Fri . "Plating Precious Metals on Nonprecious Metal Nanoparticles for Sustainable Electrocatalysts". United States. https://doi.org/10.1021/acs.nanolett.7b00046. https://www.osti.gov/servlets/purl/1484724.
@article{osti_1484724,
title = {Plating Precious Metals on Nonprecious Metal Nanoparticles for Sustainable Electrocatalysts},
author = {Wang, Lei and Zeng, Zhenhua and Ma, Cheng and Liu, Yifan and Giroux, Michael and Chi, Miaofang and Jin, Jian and Greeley, Jeffrey and Wang, Chao},
abstractNote = {Precious metals have broad applications in modern industry and renewable energy technologies. The high cost and limited availability of these materials, however, have caused a grand challenge for sustainability. In this work, we report on the plating of a precious metal on nonprecious metal nanoparticles for the development of sustainable electrocatalysts. Cobalt/platinum core/shell (denoted as Co@Pt) nanoparticles were synthesized via seed-mediated growth. The Co seeds were first synthesized by thermal decomposition of cobalt carbonyl, and the Pt shell was overgrown in situ by adding platinum acetylacetonate (Pt(acac)2). The galvanic replacement reaction between Co and the Pt precursor was successfully suppressed by taking advantage of CO (generated from the decomposition of cobalt carbonyl) as the stabilizing ligand and/or reducing agent. Moreover, the obtained Co@Pt nanoparticles were found to exhibit enhanced catalytic activity for the oxygen reduction reaction (ORR).},
doi = {10.1021/acs.nanolett.7b00046},
journal = {Nano Letters},
number = 6,
volume = 17,
place = {United States},
year = {2017},
month = {5}
}

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Cited by: 32 works
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