Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires

Christopher Koenigsmann; Wei Ping Zhou; Radoslav R. Adzic; Eli Sutter; Stanislaus S. Wong

doi:10.1021/nl100718k

Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires

Christopher Koenigsmann
, Wei Ping Zhou
, Radoslav R. Adzic
, Eli Sutter
, Stanislaus S. Wong

Chemistry

Stony Brook University
Brookhaven National Laboratory

Research output: Contribution to journal › Article › peer-review

251 Scopus citations

Abstract

We report on the synthesis, characterization, and electrocatalytic performance of ultrathin Pt nanowires with a diameter of less than 2 nm. An acid-wash protocol was employed in order to yield highly exfoliated, crystalline nanowires with a diameter of 1.3 ± 0.4 nm. The electrocatalytic activity of these nanowires toward the oxygen reduction reaction was studied in relation to the activity of both supported and unsupported Pt nanoparticles as well as with previously synthesized Pt nanotubes. Our ultrathin, acid-treated, unsupported nanowires displayed an electrochemical surface area activity of 1.45 mA/cm², which was nearly 4 times greater than that of analogous, unsupported platinum nanotubes and 7 times greater than that of commercial supported platinum nanoparticles.

Original language	English
Pages (from-to)	2806-2811
Number of pages	6
Journal	Nano Letters
Volume	10
Issue number	8
DOIs	https://doi.org/10.1021/nl100718k
State	Published - Aug 11 2010

Keywords

electrocatalysis
nanowires
oxygen reduction reaction
Platinum

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10.1021/nl100718k

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title = "Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires",

abstract = "We report on the synthesis, characterization, and electrocatalytic performance of ultrathin Pt nanowires with a diameter of less than 2 nm. An acid-wash protocol was employed in order to yield highly exfoliated, crystalline nanowires with a diameter of 1.3 ± 0.4 nm. The electrocatalytic activity of these nanowires toward the oxygen reduction reaction was studied in relation to the activity of both supported and unsupported Pt nanoparticles as well as with previously synthesized Pt nanotubes. Our ultrathin, acid-treated, unsupported nanowires displayed an electrochemical surface area activity of 1.45 mA/cm2, which was nearly 4 times greater than that of analogous, unsupported platinum nanotubes and 7 times greater than that of commercial supported platinum nanoparticles.",

keywords = "electrocatalysis, nanowires, oxygen reduction reaction, Platinum",

author = "Christopher Koenigsmann and Zhou, \{Wei Ping\} and Adzic, \{Radoslav R.\} and Eli Sutter and Wong, \{Stanislaus S.\}",

year = "2010",

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doi = "10.1021/nl100718k",

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T1 - Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires

AU - Koenigsmann, Christopher

AU - Zhou, Wei Ping

AU - Adzic, Radoslav R.

AU - Sutter, Eli

AU - Wong, Stanislaus S.

PY - 2010/8/11

Y1 - 2010/8/11

N2 - We report on the synthesis, characterization, and electrocatalytic performance of ultrathin Pt nanowires with a diameter of less than 2 nm. An acid-wash protocol was employed in order to yield highly exfoliated, crystalline nanowires with a diameter of 1.3 ± 0.4 nm. The electrocatalytic activity of these nanowires toward the oxygen reduction reaction was studied in relation to the activity of both supported and unsupported Pt nanoparticles as well as with previously synthesized Pt nanotubes. Our ultrathin, acid-treated, unsupported nanowires displayed an electrochemical surface area activity of 1.45 mA/cm2, which was nearly 4 times greater than that of analogous, unsupported platinum nanotubes and 7 times greater than that of commercial supported platinum nanoparticles.

AB - We report on the synthesis, characterization, and electrocatalytic performance of ultrathin Pt nanowires with a diameter of less than 2 nm. An acid-wash protocol was employed in order to yield highly exfoliated, crystalline nanowires with a diameter of 1.3 ± 0.4 nm. The electrocatalytic activity of these nanowires toward the oxygen reduction reaction was studied in relation to the activity of both supported and unsupported Pt nanoparticles as well as with previously synthesized Pt nanotubes. Our ultrathin, acid-treated, unsupported nanowires displayed an electrochemical surface area activity of 1.45 mA/cm2, which was nearly 4 times greater than that of analogous, unsupported platinum nanotubes and 7 times greater than that of commercial supported platinum nanoparticles.

KW - electrocatalysis

KW - nanowires

KW - oxygen reduction reaction

KW - Platinum

UR - https://www.scopus.com/pages/publications/77955586526

U2 - 10.1021/nl100718k

DO - 10.1021/nl100718k

M3 - Article

AN - SCOPUS:77955586526

SN - 1530-6984

VL - 10

SP - 2806

EP - 2811

JO - Nano Letters

JF - Nano Letters

IS - 8

ER -

Size-dependent enhancement of electrocatalytic performance in relatively defect-free, processed ultrathin platinum nanowires

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