Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite
Continuous thin platinum nanoplatelet networks and thin films were obtained on the flat surface of highly ordered pyrolytic graphite (HOPG) by high overpotential electrodeposition. By increasing the deposition time, the morphology of the Pt deposits can be progressively tuned from isolated nanoplate...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-09-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2079-4991/8/9/721 |
| _version_ | 1828529225071591424 |
|---|---|
| author | Filippo Farina Giorgio Ercolano Sara Cavaliere Deborah J. Jones Jacques Rozière |
| author_facet | Filippo Farina Giorgio Ercolano Sara Cavaliere Deborah J. Jones Jacques Rozière |
| author_sort | Filippo Farina |
| collection | DOAJ |
| description | Continuous thin platinum nanoplatelet networks and thin films were obtained on the flat surface of highly ordered pyrolytic graphite (HOPG) by high overpotential electrodeposition. By increasing the deposition time, the morphology of the Pt deposits can be progressively tuned from isolated nanoplatelets, interconnected nanostructures, and thin large flat islands. The deposition is surface-limited and the thickness of the deposits, equivalent to 5 to 12 Pt monolayers, is not time dependent. The presence of Pt (111) facets is confirmed by High Resolution Transmission Electron Microscopy (HRTEM) and evidence for the early formation of a platinum monolayer is provided by Scanning Transmission Electron Microscopy and Energy Dispersive X-rays Spectroscopy (STEM-EDX) and X-ray Photoelectron Spectroscopy (XPS) analysis. The electroactivity towards the oxygen reduction reaction of the 2D deposits is also assessed, demonstrating their great potential in energy conversion devices where ultra-low loading of Pt via extended surfaces is a reliable strategy. |
| first_indexed | 2024-12-11T22:05:11Z |
| format | Article |
| id | doaj.art-508bf13684f14bf5a962c830221e07fc |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-11T22:05:11Z |
| publishDate | 2018-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-508bf13684f14bf5a962c830221e07fc2022-12-22T00:48:59ZengMDPI AGNanomaterials2079-49912018-09-018972110.3390/nano8090721nano8090721Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic GraphiteFilippo Farina0Giorgio Ercolano1Sara Cavaliere2Deborah J. Jones3Jacques Rozière4Institute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier CEDEX 5, FranceInstitute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier CEDEX 5, FranceInstitute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier CEDEX 5, FranceInstitute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier CEDEX 5, FranceInstitute Charles Gerhardt Montpellier, UMR CNRS 5253, Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier CEDEX 5, FranceContinuous thin platinum nanoplatelet networks and thin films were obtained on the flat surface of highly ordered pyrolytic graphite (HOPG) by high overpotential electrodeposition. By increasing the deposition time, the morphology of the Pt deposits can be progressively tuned from isolated nanoplatelets, interconnected nanostructures, and thin large flat islands. The deposition is surface-limited and the thickness of the deposits, equivalent to 5 to 12 Pt monolayers, is not time dependent. The presence of Pt (111) facets is confirmed by High Resolution Transmission Electron Microscopy (HRTEM) and evidence for the early formation of a platinum monolayer is provided by Scanning Transmission Electron Microscopy and Energy Dispersive X-rays Spectroscopy (STEM-EDX) and X-ray Photoelectron Spectroscopy (XPS) analysis. The electroactivity towards the oxygen reduction reaction of the 2D deposits is also assessed, demonstrating their great potential in energy conversion devices where ultra-low loading of Pt via extended surfaces is a reliable strategy.http://www.mdpi.com/2079-4991/8/9/721electrodepositionplatinumhighly oriented pyrolytic graphite2D growththin films |
| spellingShingle | Filippo Farina Giorgio Ercolano Sara Cavaliere Deborah J. Jones Jacques Rozière Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite Nanomaterials electrodeposition platinum highly oriented pyrolytic graphite 2D growth thin films |
| title | Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite |
| title_full | Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite |
| title_fullStr | Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite |
| title_full_unstemmed | Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite |
| title_short | Surface-Limited Electrodeposition of Continuous Platinum Networks on Highly Ordered Pyrolytic Graphite |
| title_sort | surface limited electrodeposition of continuous platinum networks on highly ordered pyrolytic graphite |
| topic | electrodeposition platinum highly oriented pyrolytic graphite 2D growth thin films |
| url | http://www.mdpi.com/2079-4991/8/9/721 |
| work_keys_str_mv | AT filippofarina surfacelimitedelectrodepositionofcontinuousplatinumnetworksonhighlyorderedpyrolyticgraphite AT giorgioercolano surfacelimitedelectrodepositionofcontinuousplatinumnetworksonhighlyorderedpyrolyticgraphite AT saracavaliere surfacelimitedelectrodepositionofcontinuousplatinumnetworksonhighlyorderedpyrolyticgraphite AT deborahjjones surfacelimitedelectrodepositionofcontinuousplatinumnetworksonhighlyorderedpyrolyticgraphite AT jacquesroziere surfacelimitedelectrodepositionofcontinuousplatinumnetworksonhighlyorderedpyrolyticgraphite |