Atomic layer deposition of highly dispersed Pt nanoparticles on a high surface area electrode backbone for electrochemical promotion of catalysis

Y. Hajar, V. Di Palma, V. Kyriakou, M.A. Verheijen, E.A. Baranova, P. Vernoux, W.M.M. Kessels, M. Creatore, M.C.M. van de Sanden, Michail Tsampas

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A novel catalyst design for electrochemical promotion of catalysis (EPOC) is proposed which overcomes the main bottlenecks that limit EPOC commercialization, i.e., the low dispersion and small surface area of metal catalysts. We have increased the surface area by using a porous composite electrode backbone made of (La0.8Sr0.2)0.95MnO3-δ/Ce0.9Gd0.1O1.95 (LSM/GDC). Highly dispersed Pt nanoparticles with an average diameter of 6.5 nm have been deposited on LSM/GDC by atomic layer deposition (ALD). This novel design offers, for the first time, a controllable and reproducible method for the fabrication of EPOC catalysts. The bare electrode backbone shows negligible activity for propane oxidation, while in the presence of Pt nanoparticles a high catalytic activity is obtained above 200 °C. The performance of the Pt-loaded LSM/GDC catalyst was significantly improved by application of small currents (I < 500 μΑ), leading to a 27–33% increase as a function of the open circuit catalytic rate, with apparent Faradaic efficiency values ranging from 1000 to 3860% at 300 °C. Our results demonstrate that EPOC is a valid approach for enhancing the catalytic activity of nano-structured catalysts.
Originele taal-2Engels
Pagina's (van-tot)40-44
TijdschriftElectrochemistry Communications
Volume84
DOI's
StatusGepubliceerd - 2 okt 2017

Vingerafdruk

Atomic layer deposition
Catalysis
Nanoparticles
Electrodes
Catalysts
Catalyst activity
Propane
Metals
Fabrication
Oxidation
Networks (circuits)
Composite materials

Citeer dit

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title = "Atomic layer deposition of highly dispersed Pt nanoparticles on a high surface area electrode backbone for electrochemical promotion of catalysis",
abstract = "A novel catalyst design for electrochemical promotion of catalysis (EPOC) is proposed which overcomes the main bottlenecks that limit EPOC commercialization, i.e., the low dispersion and small surface area of metal catalysts. We have increased the surface area by using a porous composite electrode backbone made of (La0.8Sr0.2)0.95MnO3-δ/Ce0.9Gd0.1O1.95 (LSM/GDC). Highly dispersed Pt nanoparticles with an average diameter of 6.5 nm have been deposited on LSM/GDC by atomic layer deposition (ALD). This novel design offers, for the first time, a controllable and reproducible method for the fabrication of EPOC catalysts. The bare electrode backbone shows negligible activity for propane oxidation, while in the presence of Pt nanoparticles a high catalytic activity is obtained above 200 °C. The performance of the Pt-loaded LSM/GDC catalyst was significantly improved by application of small currents (I < 500 μΑ), leading to a 27–33{\%} increase as a function of the open circuit catalytic rate, with apparent Faradaic efficiency values ranging from 1000 to 3860{\%} at 300 °C. Our results demonstrate that EPOC is a valid approach for enhancing the catalytic activity of nano-structured catalysts.",
author = "Y. Hajar and {Di Palma}, V. and V. Kyriakou and M.A. Verheijen and E.A. Baranova and P. Vernoux and W.M.M. Kessels and M. Creatore and {van de Sanden}, M.C.M. and Michail Tsampas",
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month = "10",
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journal = "Electrochemistry Communications",
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Atomic layer deposition of highly dispersed Pt nanoparticles on a high surface area electrode backbone for electrochemical promotion of catalysis. / Hajar, Y.; Di Palma, V.; Kyriakou, V.; Verheijen, M.A.; Baranova, E.A.; Vernoux, P.; Kessels, W.M.M.; Creatore, M.; van de Sanden, M.C.M.; Tsampas, Michail.

In: Electrochemistry Communications, Vol. 84, 02.10.2017, blz. 40-44.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Atomic layer deposition of highly dispersed Pt nanoparticles on a high surface area electrode backbone for electrochemical promotion of catalysis

AU - Hajar, Y.

AU - Di Palma, V.

AU - Kyriakou, V.

AU - Verheijen, M.A.

AU - Baranova, E.A.

AU - Vernoux, P.

AU - Kessels, W.M.M.

AU - Creatore, M.

AU - van de Sanden, M.C.M.

AU - Tsampas, Michail

PY - 2017/10/2

Y1 - 2017/10/2

N2 - A novel catalyst design for electrochemical promotion of catalysis (EPOC) is proposed which overcomes the main bottlenecks that limit EPOC commercialization, i.e., the low dispersion and small surface area of metal catalysts. We have increased the surface area by using a porous composite electrode backbone made of (La0.8Sr0.2)0.95MnO3-δ/Ce0.9Gd0.1O1.95 (LSM/GDC). Highly dispersed Pt nanoparticles with an average diameter of 6.5 nm have been deposited on LSM/GDC by atomic layer deposition (ALD). This novel design offers, for the first time, a controllable and reproducible method for the fabrication of EPOC catalysts. The bare electrode backbone shows negligible activity for propane oxidation, while in the presence of Pt nanoparticles a high catalytic activity is obtained above 200 °C. The performance of the Pt-loaded LSM/GDC catalyst was significantly improved by application of small currents (I < 500 μΑ), leading to a 27–33% increase as a function of the open circuit catalytic rate, with apparent Faradaic efficiency values ranging from 1000 to 3860% at 300 °C. Our results demonstrate that EPOC is a valid approach for enhancing the catalytic activity of nano-structured catalysts.

AB - A novel catalyst design for electrochemical promotion of catalysis (EPOC) is proposed which overcomes the main bottlenecks that limit EPOC commercialization, i.e., the low dispersion and small surface area of metal catalysts. We have increased the surface area by using a porous composite electrode backbone made of (La0.8Sr0.2)0.95MnO3-δ/Ce0.9Gd0.1O1.95 (LSM/GDC). Highly dispersed Pt nanoparticles with an average diameter of 6.5 nm have been deposited on LSM/GDC by atomic layer deposition (ALD). This novel design offers, for the first time, a controllable and reproducible method for the fabrication of EPOC catalysts. The bare electrode backbone shows negligible activity for propane oxidation, while in the presence of Pt nanoparticles a high catalytic activity is obtained above 200 °C. The performance of the Pt-loaded LSM/GDC catalyst was significantly improved by application of small currents (I < 500 μΑ), leading to a 27–33% increase as a function of the open circuit catalytic rate, with apparent Faradaic efficiency values ranging from 1000 to 3860% at 300 °C. Our results demonstrate that EPOC is a valid approach for enhancing the catalytic activity of nano-structured catalysts.

U2 - 10.1016/j.elecom.2017.09.023

DO - 10.1016/j.elecom.2017.09.023

M3 - Article

VL - 84

SP - 40

EP - 44

JO - Electrochemistry Communications

JF - Electrochemistry Communications

SN - 1388-2481

ER -