Cited by 3,073Electrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceNanomaterials for catalytic reactions

Synthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity

Tian, Na, Zhou, Zhi-You, Sun, Shi-Gang, Ding, Yong, Wang, Zhong Lin·2007·Science

Abstract

The shapes of noble metal nanocrystals (NCs) are usually defined by polyhedra that are enclosed by {111} and {100} facets, such as cubes, tetrahedra, and octahedra. Platinum NCs of unusual tetrahexahedral (THH) shape were prepared at high yield by an electrochemical treatment of Pt nanospheres supported on glassy carbon by a square-wave potential. The single-crystal THH NC is enclosed by 24 high-index facets such as {730}, {210}, and/or {520} surfaces that have a large density of atomic steps and dangling bonds. These high-energy surfaces are stable thermally (to 800°C) and chemically and exhibit much enhanced (up to 400%) catalytic activity for equivalent Pt surface areas for electro-oxidation of small organic fuels such as formic acid and ethanol.

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Crossref · 10.1126/science.1140484

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Authors
Tian, N., Zhou, Z.-Y., Sun, S.-G., Ding, Y., & Wang, Z. L.
Affiliations
Georgia Institute of Technology (US)
Corresponding author
  • Sun, Shi-Gang
  • Wang, Zhong Lin
Venue
Science
Published
2007-05-04
Volume
316
Issue
5825
Pages
732-735
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2061820211
Cited by
3,073
References
30
Citations by year
2026: 35 · 2025: 78 · 2024: 91 · 2023: 85 · 2022: 122 · 2021: 134 · 2020: 123 · 2019: 153 · 2018: 170 · 2017: 176 · 2016: 198 · 2015: 233 · 2014: 251 · 2013: 267 · 2012: 246
FWCI
105.43
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
  • Physical Sciences › Chemistry › Organic Chemistry › Nanomaterials for catalytic reactions
Keywords
platinum nanocrystals, high-index facets, electrochemical oxidation, formic acid oxidation, ethanol oxidation, electrocatalysis, nanocrystal synthesis, single-crystal nanocrystals

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