Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains
Тип публикации: Journal Article
Дата публикации: 2012-05-16
SCImago Q1
WOS Q3
БС1
SJR: 0.82
CiteScore: 5.7
Impact factor: 3.4
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
Achieving synergy between inexpensive metals and metal oxides is a key challenge for the development of highly active, economical catalysts. We report the synthesis and characterization of a highly active oxygen reduction reaction (ORR) catalyst composed of Ag particles (3 nm) in intimate contact with thin (∼1 nm) MnOx domains on Vulcan carbon (VC) as shown via electron microscopy. A new electroless co-deposition scheme, whereby MnO4– ions are reduced by carbon, formed nanosized MnOx reduction centers for Ag nanoparticle deposition. A bifunctional mechanism for ORR is proposed, in which the HO2– intermediate is formed electrochemically and is regenerated via disproportionation into OH– and O2. A 3× mass activity enhancement is observed for Ag-MnOx/VC (125 mA/mgAg+MnOx) over the linear combination of pure component activities using rotating disk voltammetry. The Ag-MnOx/VC mass activity is comparable to commercial Pd/VC (111 mA/mgPd) and Pt/VC (136 mA/mgPt). Furthermore, the number of electrons transferred...
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Slanac D. A. et al. Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains // Journal of Physical Chemistry C. 2012. Vol. 116. No. 20. pp. 11032-11039.
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Slanac D. A., Lie A., Paulson J., Johnston K. P. Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains // Journal of Physical Chemistry C. 2012. Vol. 116. No. 20. pp. 11032-11039.
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TY - JOUR
DO - 10.1021/jp3012816
UR - https://doi.org/10.1021/jp3012816
TI - Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains
T2 - Journal of Physical Chemistry C
AU - Slanac, Daniel A.
AU - Lie, Anthony
AU - Paulson, Joel
AU - Johnston, Keith P.
PY - 2012
DA - 2012/05/16
PB - American Chemical Society (ACS)
SP - 11032-11039
IS - 20
VL - 116
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2012_Slanac,
author = {Daniel A. Slanac and Anthony Lie and Joel Paulson and Keith P. Johnston},
title = {Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains},
journal = {Journal of Physical Chemistry C},
year = {2012},
volume = {116},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/jp3012816},
number = {20},
pages = {11032--11039},
doi = {10.1021/jp3012816}
}
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MLA
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Slanac, Daniel A., et al. “Bifunctional Catalysts for Alkaline Oxygen Reduction Reaction via Promotion of Ligand and Ensemble Effects at Ag/MnOx Nanodomains.” Journal of Physical Chemistry C, vol. 116, no. 20, May. 2012, pp. 11032-11039. https://doi.org/10.1021/jp3012816.
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