Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution
Apstrakt
Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at ste...ps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction. (C) 2012 Elsevier Ltd. All rights reserved.
Ključne reči:
Au(111) / Palladium / AFM / Hydrogen evolution / Alkaline solutionIzvor:
Electrochimica Acta, 2013, 88, 589-596Finansiranje / projekti:
- Funkcionalni, funkcionalizovani i usavršeni nano materijali (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
DOI: 10.1016/j.electacta.2012.10.128
ISSN: 0013-4686
WoS: 000315076300079
Scopus: 2-s2.0-84870704364
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Smiljanić, Milutin Lj. AU - Srejić, Irina AU - Grgur, Branimir AU - Rakočević, Zlatko Lj. AU - Štrbac, Svetlana PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5316 AB - Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction. (C) 2012 Elsevier Ltd. All rights reserved. T2 - Electrochimica Acta T1 - Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution VL - 88 SP - 589 EP - 596 DO - 10.1016/j.electacta.2012.10.128 ER -
@article{ author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana", year = "2013", abstract = "Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction. (C) 2012 Elsevier Ltd. All rights reserved.", journal = "Electrochimica Acta", title = "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution", volume = "88", pages = "589-596", doi = "10.1016/j.electacta.2012.10.128" }
Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2013). Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta, 88, 589-596. https://doi.org/10.1016/j.electacta.2012.10.128
Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta. 2013;88:589-596. doi:10.1016/j.electacta.2012.10.128 .
Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution" in Electrochimica Acta, 88 (2013):589-596, https://doi.org/10.1016/j.electacta.2012.10.128 . .