TY - JOUR
T1 - Platinum-Group-Metal High-Entropy-Alloy Nanoparticles
AU - Wu, Dongshuang
AU - Kusada, Kohei
AU - Yamamoto, Tomokazu
AU - Toriyama, Takaaki
AU - Matsumura, Syo
AU - Kawaguchi, Shogo
AU - Kubota, Yoshiki
AU - Kitagawa, Hiroshi
N1 - Funding Information:
We acknowledge support from the JST ACCEL program, Grant Number JPMJAC1501. STEM observations were performed as a part of a program conducted by the Advanced Characterization Nanotechnology Platform sponsored by the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government. Synchrotron XRD measurements were performed at SPring-8 under proposal No. 2018B1480.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/8/12
Y1 - 2020/8/12
N2 - The platinum-group metals (PGMs) are six neighboring elements in the periodic table of the elements. Each PGM can efficiently promote unique reactions, and therefore, alloying PGMs would create ideal catalysts for complex or multistep reactions that involve several reactants and intermediates. Thus, high-entropy-alloy (HEA) nanoparticles (NPs) of all six PGMs (denoted as PGM-HEA) having a great variety of adsorption sites on their surfaces could be ideal candidates to catalyze complex reactions. Here, we report for the first time PGM-HEA and demonstrate that PGM-HEA efficiently promotes the ethanol oxidation reaction (EOR) with complex 12-electron/12-proton transfer processes. PGM-HEA shows 2.5 (3.2), 6.1 (9.7), and 12.8 (3.4) times higher activity than the commercial Pd/C, Pd black and Pt/C catalysts in terms of intrinsic (mass) activity, respectively. Remarkably, it records more than 1.5 times higher mass activity than the most active catalyst to date. Our findings pave the way for promoting complex or multistep reactions that are seldom realized by mono- or bimetallic catalysts.
AB - The platinum-group metals (PGMs) are six neighboring elements in the periodic table of the elements. Each PGM can efficiently promote unique reactions, and therefore, alloying PGMs would create ideal catalysts for complex or multistep reactions that involve several reactants and intermediates. Thus, high-entropy-alloy (HEA) nanoparticles (NPs) of all six PGMs (denoted as PGM-HEA) having a great variety of adsorption sites on their surfaces could be ideal candidates to catalyze complex reactions. Here, we report for the first time PGM-HEA and demonstrate that PGM-HEA efficiently promotes the ethanol oxidation reaction (EOR) with complex 12-electron/12-proton transfer processes. PGM-HEA shows 2.5 (3.2), 6.1 (9.7), and 12.8 (3.4) times higher activity than the commercial Pd/C, Pd black and Pt/C catalysts in terms of intrinsic (mass) activity, respectively. Remarkably, it records more than 1.5 times higher mass activity than the most active catalyst to date. Our findings pave the way for promoting complex or multistep reactions that are seldom realized by mono- or bimetallic catalysts.
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U2 - 10.1021/jacs.0c04807
DO - 10.1021/jacs.0c04807
M3 - Article
C2 - 32786816
AN - SCOPUS:85089530786
SN - 0002-7863
VL - 142
SP - 13833
EP - 13838
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 32
ER -