Entropy-Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication-Assisted Wet Chemistry Method under Ambient Conditions

Miaomiao Liu; Zihao Zhang; Francis Okejiri; Shize Yang; Shenghu Zhou; Sheng Dai

doi:10.1002/admi.201900015

Entropy-Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication-Assisted Wet Chemistry Method under Ambient Conditions

Miaomiao Liu, Zihao Zhang, Francis Okejiri, Shize Yang, Shenghu Zhou, Sheng Dai

Nanomaterials Chemistry Group

Research output: Contribution to journal › Article › peer-review

177 Scopus citations

Abstract

A facile ultrasonication-assisted wet chemistry method for preparing multicomponent alloy nanoparticles (NPs) including high-entropy alloys (HEAs) is reported. PtAuPdRhRu alloy (HEA), quaternary PtAuPdRh alloy, and ternary PtAuPd alloy NPs are produced with ≈3 nm in diameter. Taking advantage of the acoustic cavitation phenomenon in ultrasonication process, noble metal precursors could be co-reduced by chemical reductants and transform to alloy structures under operation at room conditions. The instantaneous massive energy (≈5000 °C, 2000 atm) occurring in momentary timespans (≤10 ⁻⁹ s) contributes to the formation of multimetallic mixed nanomaterials driven by entropy maximization. Owing to strong synergistic effects, the catalysts with the HEA NPs supported on carbons exhibit prominent electrocatalytic activities for hydrogen evolution reaction.

Original language	English
Article number	1900015
Journal	Advanced Materials Interfaces
Volume	6
Issue number	7
DOIs	https://doi.org/10.1002/admi.201900015
State	Published - Apr 9 2019

Funding

The research was supported by the U.S. Department of Energy, Basic Energy Science, Chemical, Geoscience, and Bioscience Division. Part of the electron microscopy analysis was carried out at the Centre for Functional Nanomaterials, Brookhaven National Laboratory (BNL), which is supported by the DOE, Office of Basic Energy Science, under contract DE-SC0012704. S.Z. thanks the National Natural Science Foundation of China (Grant No. 21776090). M.L. was financially supported by the China Scholarship Council for one year’s study at the University of Tennessee and Oak Ridge National Laboratory.

Keywords

alkaline HER
high-entropy alloy
nanoparticles
ultrasonication-assisted
wet chemistry method

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/admi.201900015

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title = "Entropy-Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication-Assisted Wet Chemistry Method under Ambient Conditions",

abstract = " A facile ultrasonication-assisted wet chemistry method for preparing multicomponent alloy nanoparticles (NPs) including high-entropy alloys (HEAs) is reported. PtAuPdRhRu alloy (HEA), quaternary PtAuPdRh alloy, and ternary PtAuPd alloy NPs are produced with ≈3 nm in diameter. Taking advantage of the acoustic cavitation phenomenon in ultrasonication process, noble metal precursors could be co-reduced by chemical reductants and transform to alloy structures under operation at room conditions. The instantaneous massive energy (≈5000 °C, 2000 atm) occurring in momentary timespans (≤10 −9 s) contributes to the formation of multimetallic mixed nanomaterials driven by entropy maximization. Owing to strong synergistic effects, the catalysts with the HEA NPs supported on carbons exhibit prominent electrocatalytic activities for hydrogen evolution reaction.",

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author = "Miaomiao Liu and Zihao Zhang and Francis Okejiri and Shize Yang and Shenghu Zhou and Sheng Dai",

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AU - Liu, Miaomiao

AU - Zhang, Zihao

AU - Okejiri, Francis

AU - Yang, Shize

AU - Zhou, Shenghu

AU - Dai, Sheng

PY - 2019/4/9

Y1 - 2019/4/9

N2 - A facile ultrasonication-assisted wet chemistry method for preparing multicomponent alloy nanoparticles (NPs) including high-entropy alloys (HEAs) is reported. PtAuPdRhRu alloy (HEA), quaternary PtAuPdRh alloy, and ternary PtAuPd alloy NPs are produced with ≈3 nm in diameter. Taking advantage of the acoustic cavitation phenomenon in ultrasonication process, noble metal precursors could be co-reduced by chemical reductants and transform to alloy structures under operation at room conditions. The instantaneous massive energy (≈5000 °C, 2000 atm) occurring in momentary timespans (≤10 −9 s) contributes to the formation of multimetallic mixed nanomaterials driven by entropy maximization. Owing to strong synergistic effects, the catalysts with the HEA NPs supported on carbons exhibit prominent electrocatalytic activities for hydrogen evolution reaction.

AB - A facile ultrasonication-assisted wet chemistry method for preparing multicomponent alloy nanoparticles (NPs) including high-entropy alloys (HEAs) is reported. PtAuPdRhRu alloy (HEA), quaternary PtAuPdRh alloy, and ternary PtAuPd alloy NPs are produced with ≈3 nm in diameter. Taking advantage of the acoustic cavitation phenomenon in ultrasonication process, noble metal precursors could be co-reduced by chemical reductants and transform to alloy structures under operation at room conditions. The instantaneous massive energy (≈5000 °C, 2000 atm) occurring in momentary timespans (≤10 −9 s) contributes to the formation of multimetallic mixed nanomaterials driven by entropy maximization. Owing to strong synergistic effects, the catalysts with the HEA NPs supported on carbons exhibit prominent electrocatalytic activities for hydrogen evolution reaction.

KW - alkaline HER

KW - high-entropy alloy

KW - nanoparticles

KW - ultrasonication-assisted

KW - wet chemistry method

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VL - 6

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ER -

Entropy-Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication-Assisted Wet Chemistry Method under Ambient Conditions

Abstract

Funding

Keywords

UN SDGs

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