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Title: Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation

Abstract

The composition and structure of multimetallic nanostructures can be tailored to enhance electrocatalytic properties. This work reports a seed-mediated synthesis of novel multimetallic dendritic core-frame and frame nanostructures with a rhombic dodecahedral shape for enhanced methanol oxidation reaction (MOR). The synthesis involves in situ formation of Cu seeds and the subsequent selective deposition of Pt and Ru on the edges and vertices of the Cu seeds to generate CuPt and CuPtRu dendritic core-frame nanostructures. The core-frame nanostructures undergo a post acetic acid etching process to form the frame nanostructures. While transmission electron microscopy reveals the morphology and elemental distribution of the nanostructures, X-ray diffraction patterns confirm the alloy compositions of dendritic frames for both the core-frame and frame nanostructures. Compared to the bimetallic CuPt nanostructures, the trimetallic CuPtRu nanostructures lower the onset potential and completely suppress the peak current in the reverse scan for MOR. The CuPtRu alloyed frame nanostructures are the best to prevent Ru leaching compared to the CuPtRu core-frame nanostructures and PtRu catalysts. X-ray photoelectron spectroscopy reveals that all three elements become more electron rich in the frame nanostructures. Thus, further refining the composition ratio of the CuPtRu alloyed dendritic frame nanostructures can lead to more efficientmore » catalysts at a lower cost for MOR.« less

Authors:
 [1];  [2];  [3];  [2];  [2]; ORCiD logo [1]
  1. Univ. of Arkansas, Fayetteville, AR (United States). Dept. of Chemistry and Biochemistry
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); Univ. of Arkansas, Fayetteville, AR (United States); Arkansas Biosciences Inst., Little Rock, AR (United States)
OSTI Identifier:
1426447
Report Number(s):
BNL-203327-2018-JAAM
Journal ID: ISSN 2199-692X
Grant/Contract Number:  
SC0012704; 1457888
Resource Type:
Accepted Manuscript
Journal Name:
ChemNanoMat
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2199-692X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; metal nanostructures; copper; platinum; ruthenium; nanocrystals

Citation Formats

Mathurin, Leanne E., Tao, Jing, Xin, Huolin, Li, Jun, Zhu, Yimei, and Chen, Jingyi. Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation. United States: N. p., 2017. Web. doi:10.1002/cnma.201700249.
Mathurin, Leanne E., Tao, Jing, Xin, Huolin, Li, Jun, Zhu, Yimei, & Chen, Jingyi. Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation. United States. doi:10.1002/cnma.201700249.
Mathurin, Leanne E., Tao, Jing, Xin, Huolin, Li, Jun, Zhu, Yimei, and Chen, Jingyi. Fri . "Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation". United States. doi:10.1002/cnma.201700249. https://www.osti.gov/servlets/purl/1426447.
@article{osti_1426447,
title = {Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation},
author = {Mathurin, Leanne E. and Tao, Jing and Xin, Huolin and Li, Jun and Zhu, Yimei and Chen, Jingyi},
abstractNote = {The composition and structure of multimetallic nanostructures can be tailored to enhance electrocatalytic properties. This work reports a seed-mediated synthesis of novel multimetallic dendritic core-frame and frame nanostructures with a rhombic dodecahedral shape for enhanced methanol oxidation reaction (MOR). The synthesis involves in situ formation of Cu seeds and the subsequent selective deposition of Pt and Ru on the edges and vertices of the Cu seeds to generate CuPt and CuPtRu dendritic core-frame nanostructures. The core-frame nanostructures undergo a post acetic acid etching process to form the frame nanostructures. While transmission electron microscopy reveals the morphology and elemental distribution of the nanostructures, X-ray diffraction patterns confirm the alloy compositions of dendritic frames for both the core-frame and frame nanostructures. Compared to the bimetallic CuPt nanostructures, the trimetallic CuPtRu nanostructures lower the onset potential and completely suppress the peak current in the reverse scan for MOR. The CuPtRu alloyed frame nanostructures are the best to prevent Ru leaching compared to the CuPtRu core-frame nanostructures and PtRu catalysts. X-ray photoelectron spectroscopy reveals that all three elements become more electron rich in the frame nanostructures. Thus, further refining the composition ratio of the CuPtRu alloyed dendritic frame nanostructures can lead to more efficient catalysts at a lower cost for MOR.},
doi = {10.1002/cnma.201700249},
journal = {ChemNanoMat},
number = 1,
volume = 4,
place = {United States},
year = {2017},
month = {11}
}

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