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Title: Atomic scale deposition of Pt around Au nanoparticles to achieve much enhanced electrocatalysis of Pt

Abstract

Here, we report an electrochemical method to deposit atomic scale Pt on a 5 nm Au nanoparticle (NP) surface in N2-saturated 0.5 M H2SO4. Furthermore, Pt is provided by the Pt wire counter electrode via one-step Pt wire oxidation, dissolution, and deposition realized by controlled electrochemical scanning. Scanning from 0.6–1.0 V (vs. RHE) for 10 000 cycles gives Au98.2Pt1.8, which serves as an excellent catalyst for the formic acid oxidation reaction, showing 41 times higher specific activity (20.19 mA cm-2) and 25 times higher mass activity (10.80 A mgPt-1) with much better CO-tolerance and stability than commercial Pt. This work demonstrates a unique strategy to minimize the use of Pt as a catalyst for electrochemical reactions.

Authors:
ORCiD logo [1];  [1];  [1];  [2];  [3];  [1];  [1]; ORCiD logo [1]
  1. Brown Univ., Providence, RI (United States). Dept. of Chemistry
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
  3. Huazhong Univ. of Science and Technology, Wuhan (China). School of Materials Science and Engineering
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1377025
Report Number(s):
BNL-114185-2017-JA
Journal ID: ISSN 2040-3364; NANOHL; R&D Project: 16060; 16060; KC0403020
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 9; Journal Issue: 23; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Pt; Au; Electrocatalysis; Nanoparticles; Center for Functional Nanomaterials

Citation Formats

Xi, Zheng, Lv, Haifeng, Erdosy, Daniel P., Su, Dong, Li, Qing, Yu, Chao, Li, Junrui, and Sun, Shouheng. Atomic scale deposition of Pt around Au nanoparticles to achieve much enhanced electrocatalysis of Pt. United States: N. p., 2017. Web. doi:10.1039/C7NR02711G.
Xi, Zheng, Lv, Haifeng, Erdosy, Daniel P., Su, Dong, Li, Qing, Yu, Chao, Li, Junrui, & Sun, Shouheng. Atomic scale deposition of Pt around Au nanoparticles to achieve much enhanced electrocatalysis of Pt. United States. doi:10.1039/C7NR02711G.
Xi, Zheng, Lv, Haifeng, Erdosy, Daniel P., Su, Dong, Li, Qing, Yu, Chao, Li, Junrui, and Sun, Shouheng. Sun . "Atomic scale deposition of Pt around Au nanoparticles to achieve much enhanced electrocatalysis of Pt". United States. doi:10.1039/C7NR02711G. https://www.osti.gov/servlets/purl/1377025.
@article{osti_1377025,
title = {Atomic scale deposition of Pt around Au nanoparticles to achieve much enhanced electrocatalysis of Pt},
author = {Xi, Zheng and Lv, Haifeng and Erdosy, Daniel P. and Su, Dong and Li, Qing and Yu, Chao and Li, Junrui and Sun, Shouheng},
abstractNote = {Here, we report an electrochemical method to deposit atomic scale Pt on a 5 nm Au nanoparticle (NP) surface in N2-saturated 0.5 M H2SO4. Furthermore, Pt is provided by the Pt wire counter electrode via one-step Pt wire oxidation, dissolution, and deposition realized by controlled electrochemical scanning. Scanning from 0.6–1.0 V (vs. RHE) for 10 000 cycles gives Au98.2Pt1.8, which serves as an excellent catalyst for the formic acid oxidation reaction, showing 41 times higher specific activity (20.19 mA cm-2) and 25 times higher mass activity (10.80 A mgPt-1) with much better CO-tolerance and stability than commercial Pt. This work demonstrates a unique strategy to minimize the use of Pt as a catalyst for electrochemical reactions.},
doi = {10.1039/C7NR02711G},
journal = {Nanoscale},
number = 23,
volume = 9,
place = {United States},
year = {2017},
month = {5}
}

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Cited by: 6 works
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