Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution
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2018
Authors
Smiljanić, Milutin Lj.Srejić, Irina
Potočnik, Jelena
Mitrić, Miodrag
Rakočević, Zlatko Lj.
Štrbac, Svetlana
Article (Published version)
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© 2018 Hydrogen Energy Publications LLC
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Hydrogen evolution reaction (HER) was explored on tri-metallic Rh@Pd/Au(poly) and bimetallic Pd/Au(poly) and Rh/Au(poly) electrodes in alkaline solution. Electrodes were prepared by the spontaneous deposition of either Pd or Rh and by co-deposition of both Rh and Pd on polycrystalline gold electrode. Characterization of modified electrodes was performed by cyclic voltammetry in alkaline solution, while additional information about phase analysis, chemical composition and surface morphology of tri-metallic Rh@Pd/Au(poly) electrode were acquired using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy and atomic force microscopy. Investigations of HER catalysis have shown that the activity of tri-metallic Rh@Pd/Au(poly) electrode exceeds the activities of both Pd/Au(poly) and Rh/Au(poly) electrodes, meaning that the synergism between co-deposited Pd and Rh islands is achieved. Moreover, Rh@Pd/Au(poly) electrode showed significant approach to ...the activities of bulk Pd and Rh electrodes for HER, especially when taking into account low activity of bare Au substrate. Synergistic effect of co-deposited Pd and Rh islands is a consequence of the strong electronic interaction between three metals in a close contact, which promotes the activity for HER by lowering the adsorption energy of Hads intermediate. © 2018 Hydrogen Energy Publications LLC
Keywords:
Gold / Palladium / Rhodium / Tri-metallic electrode / Hydrogen evolutionSource:
International Journal of Hydrogen Energy, 2018, 43, 42, 19420-19431Funding / projects:
- Functional, Functionalized and Advanced Nanomaterials (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
DOI: 10.1016/j.ijhydene.2018.08.117
ISSN: 0360-3199; 1879-3487
WoS: 000449237200012
Scopus: 2-s2.0-85053725659
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https://linkinghub.elsevier.com/retrieve/pii/S0360319918326909https://vinar.vin.bg.ac.rs/handle/123456789/7893
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VinčaTY - JOUR AU - Smiljanić, Milutin Lj. AU - Srejić, Irina AU - Potočnik, Jelena AU - Mitrić, Miodrag AU - Rakočević, Zlatko Lj. AU - Štrbac, Svetlana PY - 2018 UR - https://linkinghub.elsevier.com/retrieve/pii/S0360319918326909 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7893 AB - Hydrogen evolution reaction (HER) was explored on tri-metallic Rh@Pd/Au(poly) and bimetallic Pd/Au(poly) and Rh/Au(poly) electrodes in alkaline solution. Electrodes were prepared by the spontaneous deposition of either Pd or Rh and by co-deposition of both Rh and Pd on polycrystalline gold electrode. Characterization of modified electrodes was performed by cyclic voltammetry in alkaline solution, while additional information about phase analysis, chemical composition and surface morphology of tri-metallic Rh@Pd/Au(poly) electrode were acquired using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy and atomic force microscopy. Investigations of HER catalysis have shown that the activity of tri-metallic Rh@Pd/Au(poly) electrode exceeds the activities of both Pd/Au(poly) and Rh/Au(poly) electrodes, meaning that the synergism between co-deposited Pd and Rh islands is achieved. Moreover, Rh@Pd/Au(poly) electrode showed significant approach to the activities of bulk Pd and Rh electrodes for HER, especially when taking into account low activity of bare Au substrate. Synergistic effect of co-deposited Pd and Rh islands is a consequence of the strong electronic interaction between three metals in a close contact, which promotes the activity for HER by lowering the adsorption energy of Hads intermediate. © 2018 Hydrogen Energy Publications LLC T2 - International Journal of Hydrogen Energy T1 - Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution VL - 43 IS - 42 SP - 19420 EP - 19431 DO - 10.1016/j.ijhydene.2018.08.117 ER -
@article{ author = "Smiljanić, Milutin Lj. and Srejić, Irina and Potočnik, Jelena and Mitrić, Miodrag and Rakočević, Zlatko Lj. and Štrbac, Svetlana", year = "2018", abstract = "Hydrogen evolution reaction (HER) was explored on tri-metallic Rh@Pd/Au(poly) and bimetallic Pd/Au(poly) and Rh/Au(poly) electrodes in alkaline solution. Electrodes were prepared by the spontaneous deposition of either Pd or Rh and by co-deposition of both Rh and Pd on polycrystalline gold electrode. Characterization of modified electrodes was performed by cyclic voltammetry in alkaline solution, while additional information about phase analysis, chemical composition and surface morphology of tri-metallic Rh@Pd/Au(poly) electrode were acquired using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy and atomic force microscopy. Investigations of HER catalysis have shown that the activity of tri-metallic Rh@Pd/Au(poly) electrode exceeds the activities of both Pd/Au(poly) and Rh/Au(poly) electrodes, meaning that the synergism between co-deposited Pd and Rh islands is achieved. Moreover, Rh@Pd/Au(poly) electrode showed significant approach to the activities of bulk Pd and Rh electrodes for HER, especially when taking into account low activity of bare Au substrate. Synergistic effect of co-deposited Pd and Rh islands is a consequence of the strong electronic interaction between three metals in a close contact, which promotes the activity for HER by lowering the adsorption energy of Hads intermediate. © 2018 Hydrogen Energy Publications LLC", journal = "International Journal of Hydrogen Energy", title = "Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution", volume = "43", number = "42", pages = "19420-19431", doi = "10.1016/j.ijhydene.2018.08.117" }
Smiljanić, M. Lj., Srejić, I., Potočnik, J., Mitrić, M., Rakočević, Z. Lj.,& Štrbac, S.. (2018). Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution. in International Journal of Hydrogen Energy, 43(42), 19420-19431. https://doi.org/10.1016/j.ijhydene.2018.08.117
Smiljanić ML, Srejić I, Potočnik J, Mitrić M, Rakočević ZL, Štrbac S. Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution. in International Journal of Hydrogen Energy. 2018;43(42):19420-19431. doi:10.1016/j.ijhydene.2018.08.117 .
Smiljanić, Milutin Lj., Srejić, Irina, Potočnik, Jelena, Mitrić, Miodrag, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution" in International Journal of Hydrogen Energy, 43, no. 42 (2018):19420-19431, https://doi.org/10.1016/j.ijhydene.2018.08.117 . .