The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media
Апстракт
Pd/GC electrodes were prepared by the electrochemical deposition of palladium on glassy carbon (GC) using PdSO4 or PdCl2 salts. As-prepared GC-supported Pd nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS spectra revealed that the depositing palladium salt anion influences the oxidation state of the deposited Pd, while AFM images showed its effect on Pd nanoparticle size and coverage. The deposition from the PdCl2 salt solution resulted in smaller palladium nanoparticles, but much higher GC surface coverage than from PdSO4. The activity of Pd/GC electrodes towards oxygen reduction was examined in acid and alkaline media using the rotation-disc electrode. Among the different Pd/GC electrodes, the one prepared using PdCl2 salt with the full Pd coverage has shown the best ORR activity. The ORR occurs through a 4e-series reaction mechanism like on polycrystalline palladium but exceeds its activity concerning the initi...al potential.
Кључне речи:
Electrocatalysis / Electrochemistry / Glassy carbon / Oxygen reduction / PalladiumИзвор:
International Journal of Electrochemical Science, 2022, ArticleID:220943-Издавач:
- ESG
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200026 (Универзитет у Београду, Институт за хемију, технологију и металургију - ИХТМ) (RS-MESTD-inst-2020-200026)
Институција/група
IHTMTY - JOUR AU - Golubović, Jelena AU - Rakočević, Lazar AU - Štrbac, Svetlana PY - 2022 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/5613 AB - Pd/GC electrodes were prepared by the electrochemical deposition of palladium on glassy carbon (GC) using PdSO4 or PdCl2 salts. As-prepared GC-supported Pd nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS spectra revealed that the depositing palladium salt anion influences the oxidation state of the deposited Pd, while AFM images showed its effect on Pd nanoparticle size and coverage. The deposition from the PdCl2 salt solution resulted in smaller palladium nanoparticles, but much higher GC surface coverage than from PdSO4. The activity of Pd/GC electrodes towards oxygen reduction was examined in acid and alkaline media using the rotation-disc electrode. Among the different Pd/GC electrodes, the one prepared using PdCl2 salt with the full Pd coverage has shown the best ORR activity. The ORR occurs through a 4e-series reaction mechanism like on polycrystalline palladium but exceeds its activity concerning the initial potential. PB - ESG T2 - International Journal of Electrochemical Science T1 - The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media SP - ArticleID:220943 DO - 10.20964/2022.09.16 ER -
@article{ author = "Golubović, Jelena and Rakočević, Lazar and Štrbac, Svetlana", year = "2022", abstract = "Pd/GC electrodes were prepared by the electrochemical deposition of palladium on glassy carbon (GC) using PdSO4 or PdCl2 salts. As-prepared GC-supported Pd nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). XPS spectra revealed that the depositing palladium salt anion influences the oxidation state of the deposited Pd, while AFM images showed its effect on Pd nanoparticle size and coverage. The deposition from the PdCl2 salt solution resulted in smaller palladium nanoparticles, but much higher GC surface coverage than from PdSO4. The activity of Pd/GC electrodes towards oxygen reduction was examined in acid and alkaline media using the rotation-disc electrode. Among the different Pd/GC electrodes, the one prepared using PdCl2 salt with the full Pd coverage has shown the best ORR activity. The ORR occurs through a 4e-series reaction mechanism like on polycrystalline palladium but exceeds its activity concerning the initial potential.", publisher = "ESG", journal = "International Journal of Electrochemical Science", title = "The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media", pages = "ArticleID:220943", doi = "10.20964/2022.09.16" }
Golubović, J., Rakočević, L.,& Štrbac, S.. (2022). The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media. in International Journal of Electrochemical Science ESG., ArticleID:220943. https://doi.org/10.20964/2022.09.16
Golubović J, Rakočević L, Štrbac S. The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media. in International Journal of Electrochemical Science. 2022;:ArticleID:220943. doi:10.20964/2022.09.16 .
Golubović, Jelena, Rakočević, Lazar, Štrbac, Svetlana, "The Effect of Sulphate and Chloride Palladium Salt Anions on the Morphology of Electrodeposited Pd Nanoparticles and their Catalytic Activity for Oxygen Reduction in Acid and Alkaline Media" in International Journal of Electrochemical Science (2022):ArticleID:220943, https://doi.org/10.20964/2022.09.16 . .