Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands
Abstract
Pd/Pt(poly) and Rh/Pt(poly) bimetallic electrodes prepared by spontaneous deposition of Pd and Rh nanoislands on Pt(poly) at submonolayer coverage were explored as catalysts for hydrogen evolution reaction (HER) in alkaline media. Characterization of bimetallic surfaces was performed ex situ by height and phase AFM imaging and in situ by cyclic voltammetry. HER was investigated by linear sweep voltammetry in 0.1 M NaOH. Both Pd/Pt(poly) and Rh/Pt(poly) surfaces exhibited an enhanced catalysis for HER with respect to bare Pt(poly), which is explained by a strong synergistic electronic effect of platinum substrate on the deposited Pd or Rh nanoislands. This electronic effect leads to the lowering of a binding energy of adsorbed hydrogen intermediate and consequently to the lowering of the overpotential for HER.
Keywords:
Platinum / Palladium / Rhodium / AFM / Hydrogen evolutionSource:
Electrochimica Acta, 2014, 117, 336-343Publisher:
- Oxford : Pergamon-Elsevier Science Ltd
Funding / projects:
DOI: 10.1016/j.electacta.2013.11.142
ISSN: 0013-4686
WoS: 000332812300045
Scopus: 2-s2.0-84891606338
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Institution/Community
IHTMTY - JOUR AU - Smiljanić, Milutin AU - Rakočević, Zlatko Lj. AU - Maksic, A. AU - Štrbac, Svetlana PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1548 AB - Pd/Pt(poly) and Rh/Pt(poly) bimetallic electrodes prepared by spontaneous deposition of Pd and Rh nanoislands on Pt(poly) at submonolayer coverage were explored as catalysts for hydrogen evolution reaction (HER) in alkaline media. Characterization of bimetallic surfaces was performed ex situ by height and phase AFM imaging and in situ by cyclic voltammetry. HER was investigated by linear sweep voltammetry in 0.1 M NaOH. Both Pd/Pt(poly) and Rh/Pt(poly) surfaces exhibited an enhanced catalysis for HER with respect to bare Pt(poly), which is explained by a strong synergistic electronic effect of platinum substrate on the deposited Pd or Rh nanoislands. This electronic effect leads to the lowering of a binding energy of adsorbed hydrogen intermediate and consequently to the lowering of the overpotential for HER. PB - Oxford : Pergamon-Elsevier Science Ltd T2 - Electrochimica Acta T1 - Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands VL - 117 SP - 336 EP - 343 DO - 10.1016/j.electacta.2013.11.142 ER -
@article{ author = "Smiljanić, Milutin and Rakočević, Zlatko Lj. and Maksic, A. and Štrbac, Svetlana", year = "2014", abstract = "Pd/Pt(poly) and Rh/Pt(poly) bimetallic electrodes prepared by spontaneous deposition of Pd and Rh nanoislands on Pt(poly) at submonolayer coverage were explored as catalysts for hydrogen evolution reaction (HER) in alkaline media. Characterization of bimetallic surfaces was performed ex situ by height and phase AFM imaging and in situ by cyclic voltammetry. HER was investigated by linear sweep voltammetry in 0.1 M NaOH. Both Pd/Pt(poly) and Rh/Pt(poly) surfaces exhibited an enhanced catalysis for HER with respect to bare Pt(poly), which is explained by a strong synergistic electronic effect of platinum substrate on the deposited Pd or Rh nanoislands. This electronic effect leads to the lowering of a binding energy of adsorbed hydrogen intermediate and consequently to the lowering of the overpotential for HER.", publisher = "Oxford : Pergamon-Elsevier Science Ltd", journal = "Electrochimica Acta", title = "Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands", volume = "117", pages = "336-343", doi = "10.1016/j.electacta.2013.11.142" }
Smiljanić, M., Rakočević, Z. Lj., Maksic, A.,& Štrbac, S.. (2014). Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands. in Electrochimica Acta Oxford : Pergamon-Elsevier Science Ltd., 117, 336-343. https://doi.org/10.1016/j.electacta.2013.11.142
Smiljanić M, Rakočević ZL, Maksic A, Štrbac S. Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands. in Electrochimica Acta. 2014;117:336-343. doi:10.1016/j.electacta.2013.11.142 .
Smiljanić, Milutin, Rakočević, Zlatko Lj., Maksic, A., Štrbac, Svetlana, "Hydrogen Evolution Reaction on Platinum Catalyzed by Palladium and Rhodium Nanoislands" in Electrochimica Acta, 117 (2014):336-343, https://doi.org/10.1016/j.electacta.2013.11.142 . .