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Title: Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes

Abstract

In this paper, we report the electrosynthesis and characterization of individual, shape-controlled Pt nanocrystals (NCs) electrodeposited on carbon nanoelectrodes (CNEs). Single Pt NCs were deposited onto the CNEs using an empirically developed square-wave potential program. Characterization by scanning electron microscopy indicates that the sizes of Pt NCs are remarkably reproducible (relative standard deviation = 6%). Electrochemically active surface areas, determined by Cu underpotential deposition and H adsorption/desorption analyses, are also reproducible. Selected area electron diffraction indicates that each Pt NC is comprised of just one single crystal (no grain boundaries). Although different square-wave potential programs lead to different types of crystals, the Pt NCs discussed here have a concave hexoctahedral geometry bound primarily by {13 6 2} surface facets. The results in this report represent a first step toward our ultimate goal of studying electrocatalysis at individual, shape-controlled, single-crystal nanoparticles.

Authors:
 [1];  [1];  [1];  [1]; ORCiD logo [1]
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  1. Univ. of Texas, Austin, TX (United States)
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1611456
Alternate Identifier(s):
OSTI ID: 1459682
Grant/Contract Number:  
SC0010576
Resource Type:
Accepted Manuscript
Journal Name:
Faraday Discussions
Additional Journal Information:
Journal Volume: 210; Journal ID: ISSN 1359-6640
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Chemistry

Citation Formats

Huang, Ke, Clausmeyer, Jan, Luo, Long, Jarvis, Karalee, and Crooks, Richard M. Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes. United States: N. p., 2018. Web. doi:10.1039/c8fd00018b.
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Huang, Ke, Clausmeyer, Jan, Luo, Long, Jarvis, Karalee, & Crooks, Richard M. Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes. United States. https://doi.org/10.1039/c8fd00018b
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Huang, Ke, Clausmeyer, Jan, Luo, Long, Jarvis, Karalee, and Crooks, Richard M. Wed . "Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes". United States. https://doi.org/10.1039/c8fd00018b. https://www.osti.gov/servlets/purl/1611456.
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@article{osti_1611456,
title = {Shape-controlled electrodeposition of single Pt nanocrystals onto carbon nanoelectrodes},
author = {Huang, Ke and Clausmeyer, Jan and Luo, Long and Jarvis, Karalee and Crooks, Richard M.},
abstractNote = {In this paper, we report the electrosynthesis and characterization of individual, shape-controlled Pt nanocrystals (NCs) electrodeposited on carbon nanoelectrodes (CNEs). Single Pt NCs were deposited onto the CNEs using an empirically developed square-wave potential program. Characterization by scanning electron microscopy indicates that the sizes of Pt NCs are remarkably reproducible (relative standard deviation = 6%). Electrochemically active surface areas, determined by Cu underpotential deposition and H adsorption/desorption analyses, are also reproducible. Selected area electron diffraction indicates that each Pt NC is comprised of just one single crystal (no grain boundaries). Although different square-wave potential programs lead to different types of crystals, the Pt NCs discussed here have a concave hexoctahedral geometry bound primarily by {13 6 2} surface facets. The results in this report represent a first step toward our ultimate goal of studying electrocatalysis at individual, shape-controlled, single-crystal nanoparticles.},
doi = {10.1039/c8fd00018b},
journal = {Faraday Discussions},
number = ,
volume = 210,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2018},
month = {Wed Mar 28 00:00:00 EDT 2018}
}
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https://doi.org/10.1039/c8fd00018b
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    Shape Transition and Growth of Co x Fe 1−x Alloy Nanocrystals Synthesized by Electrochemical Deposition
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