Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Single Nanoparticle Activities in Ensemble: A Study on Pd Cluster Nanoportals for Electrochemical Oxygen Evolution Reaction
Okinawa Inst Sci & Technol OIST Grad Univ, Nanoparticles Design Unit, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan..
Okinawa Inst Sci & Technol OIST Grad Univ, Nanoparticles Design Unit, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan..
Okinawa Inst Sci & Technol OIST Grad Univ, Nanoparticles Design Unit, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan..
Aristotle Univ Thessaloniki, Dept Phys, GR-54124 Thessaloniki, Greece..
Show others and affiliations
2019 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 123, no 43, p. 26124-26135Article in journal (Refereed) Published
Abstract [en]

Comprehensive understanding of the electrochemical activity of single nanoparticles (NPs) is in critical need for opening new avenues in the broad field of electrochemistry. Published reports on single-NP electrocatalysts typically include complicated and difficult methods of synthesis and characterization; moreover, these methods usually fail to provide a reliable way to measure the activities of individual NPs within larger ensembles of particles, i.e., in real-life nanocatalyst systems. In the present work, we synthesized from the gas phase Pd NPs that act as nanoportals for electron transfer within surface-oxidized Mg thin films. The physical synthesis method provided excellent control over the deposition density and, hence, enabled the design of a system where each individual open nanoportal forms an independent active single-NP electrode (SNPE). Being uncoupled from one another, these SNPEs contribute separately toward the total electrocatalytic activity while simultaneously providing a measure of their average, individual activities. We were thus able to fabricate a stable, steady-state electrode for the electrochemical oxygen evolution reaction (OER) and to study the activity and stability of the SNPEs over a period of 20 days; the former depended on the size of the NPs, while the latter depended on the SNPEs' resistance to aerial oxidation. The remarkable stability of the ensemble catalysts under OER conditions proves that this concept can be used for further studies on the activities of different single NPs in numerous real-life systems.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 123, no 43, p. 26124-26135
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-264334DOI: 10.1021/acs.jpcc.9b07824ISI: 000493865700010Scopus ID: 2-s2.0-85074353069OAI: oai:DiVA.org:kth-264334DiVA, id: diva2:1373177
Note

QC 20191126

Available from: 2019-11-26 Created: 2019-11-26 Last updated: 2019-11-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Steinhauer, Stephan

Search in DiVA

By author/editor
Steinhauer, StephanGrammatikopoulos, Panagiotis
By organisation
Quantum and Biophotonics
In the same journal
The Journal of Physical Chemistry C
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 23 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf