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

Journal Article · · Faraday Discussions
DOI:https://doi.org/10.1039/c8fd00018b· OSTI ID:1611456

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.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0010576
OSTI ID:
1611456
Alternate ID(s):
OSTI ID: 1459682
Journal Information:
Faraday Discussions, Vol. 210; ISSN 1359-6640
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (6)

Collision Incidents of Single Tetrahexahedral Platinum Nanocrystals Recorded by a Carbon Nanoelectrode journal August 2018
Array Microcell Method (AMCM) for Serial Electroanalysis journal February 2020
Shape Transition and Growth of Co x Fe 1−x Alloy Nanocrystals Synthesized by Electrochemical Deposition journal January 2018
A Mass Transfer-Based Method for Controlled Electrosynthesis and Organization of Tetrathiafulvalene Bromide Micro/Nanowires journal January 2019
Morphology-Controlled Fabrication of Large-Scale Dendritic Silver Nanostructures for Catalysis and SERS Applications journal March 2019
Array Microcell Method (AMCM) for Serial Electroanalysis journal January 2020

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