Ultrathin PdPt bimetallic nanowires with enhanced electrocatalytic performance for hydrogen evolution reaction
Abstract
We report a general bottom-up synthetic methodology to epitaxially grow 3-nm-thick single-crystalline PdPt bimetallic nanowires using amphiphilic dioctadecyldimethylammonium chloride as the surfactant template. Mechanistic studies show that the existence of Pd element is critical in the synthesis of bimetallic PdPt nanowires with controllable atomic ratios. Due to synergistic effect of anisotropic single-crystalline ultrathin one-dimensional nanostructures and bimetallic elemental compositions, the resulting PdPt nanowires exhibit superior electrocatalytic activity and stability towards the hydrogen evolution reaction (HER). Among them, bimetallic Pd86Pt14 nanowires show the best HER activity with a small overpotential of only 0.8 mV in acidic media at a current density of 10 mA/cm2 (12.8 mV positive than that of commercial Pt nanoparticles), and excellent stability with only 4.6% loss in activity after current-time chronoamperometric responses for 26 h. As a result, this surfactant template-directing approach opens a general method for precise control of anisotropic nanostructures in diverse bimetallic nanomaterials for the high-performance electrocatalysts.
- Authors:
-
- Nanjing Normal Univ. (China)
- Columbia Univ., New York, NY (United States)
- Shaanxi Normal Univ., Shanxi (China)
- Univ. of Connecticut, Storrs, CT (United States)
- Publication Date:
- Research Org.:
- Univ. of Connecticut, Storrs, CT (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division
- OSTI Identifier:
- 1598158
- Alternate Identifier(s):
- OSTI ID: 1702207
- Grant/Contract Number:
- FG02-86ER13622; FG02-86ER13622.A000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Catalysis. B, Environmental
- Additional Journal Information:
- Journal Volume: 238; Journal Issue: C; Journal ID: ISSN 0926-3373
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; ultrathin nanowires; bimetallic PdPt; synergistic effect; electrocatalysis; hydrogen evolution reaction
Citation Formats
Lv, Hao, Chen, Xin, Xu, Dongdong, Hu, Yichen, Zheng, Haoquan, Suib, Steven L., and Liu, Ben. Ultrathin PdPt bimetallic nanowires with enhanced electrocatalytic performance for hydrogen evolution reaction. United States: N. p., 2018.
Web. doi:10.1016/j.apcatb.2018.07.060.
Lv, Hao, Chen, Xin, Xu, Dongdong, Hu, Yichen, Zheng, Haoquan, Suib, Steven L., & Liu, Ben. Ultrathin PdPt bimetallic nanowires with enhanced electrocatalytic performance for hydrogen evolution reaction. United States. https://doi.org/10.1016/j.apcatb.2018.07.060
Lv, Hao, Chen, Xin, Xu, Dongdong, Hu, Yichen, Zheng, Haoquan, Suib, Steven L., and Liu, Ben. Mon .
"Ultrathin PdPt bimetallic nanowires with enhanced electrocatalytic performance for hydrogen evolution reaction". United States. https://doi.org/10.1016/j.apcatb.2018.07.060. https://www.osti.gov/servlets/purl/1598158.
@article{osti_1598158,
title = {Ultrathin PdPt bimetallic nanowires with enhanced electrocatalytic performance for hydrogen evolution reaction},
author = {Lv, Hao and Chen, Xin and Xu, Dongdong and Hu, Yichen and Zheng, Haoquan and Suib, Steven L. and Liu, Ben},
abstractNote = {We report a general bottom-up synthetic methodology to epitaxially grow 3-nm-thick single-crystalline PdPt bimetallic nanowires using amphiphilic dioctadecyldimethylammonium chloride as the surfactant template. Mechanistic studies show that the existence of Pd element is critical in the synthesis of bimetallic PdPt nanowires with controllable atomic ratios. Due to synergistic effect of anisotropic single-crystalline ultrathin one-dimensional nanostructures and bimetallic elemental compositions, the resulting PdPt nanowires exhibit superior electrocatalytic activity and stability towards the hydrogen evolution reaction (HER). Among them, bimetallic Pd86Pt14 nanowires show the best HER activity with a small overpotential of only 0.8 mV in acidic media at a current density of 10 mA/cm2 (12.8 mV positive than that of commercial Pt nanoparticles), and excellent stability with only 4.6% loss in activity after current-time chronoamperometric responses for 26 h. As a result, this surfactant template-directing approach opens a general method for precise control of anisotropic nanostructures in diverse bimetallic nanomaterials for the high-performance electrocatalysts.},
doi = {10.1016/j.apcatb.2018.07.060},
journal = {Applied Catalysis. B, Environmental},
number = C,
volume = 238,
place = {United States},
year = {Mon Jul 23 00:00:00 EDT 2018},
month = {Mon Jul 23 00:00:00 EDT 2018}
}
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