TY - JOUR
T1 - Platinum nanoparticles photo-deposited on SnO2-C composites
T2 - An active and durable electrocatalyst for the oxygen reduction reaction
AU - Hussain, Sajid
AU - Kongi, Nadezda
AU - Erikson, Heiki
AU - Rähn, Mihkel
AU - Merisalu, Maido
AU - Matisen, Leonard
AU - Paiste, Päärn
AU - Aruväli, Jaan
AU - Sammelselg, Väino
AU - Estudillo-Wong, Luis Alberto
AU - Tammeveski, Kaido
AU - Alonso-Vante, Nicolas
N1 - Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Platinum nanoparticles (NPs) were photo-deposited on SnO2-C nanocomposites prepared by sol-gel method. Surface morphology of the prepared materials, examined by scanning electron microscopy (SEM) and transmission electron microscopy, confirmed selective deposition of Pt NPs on SnO2 nanoclusters formed on carbon surface. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) analysis, cyclic voltammetry (CV) and CO stripping experiments revealed modification of the electronic properties of the Pt NPs photo-deposited on the oxide-carbon composite in comparison to Pt/C prepared by the carbonyl chemical route. Rietveld refinement was employed to identify existing phases of catalysts and to determine the crystallite size. Micro-strain and intrinsic stacking fault increased and decreased, respectively, as a function of crystallite size. Pt loadings were determined by inductively coupled plasma mass spectrometry (ICP-MS). The oxygen reduction reaction (ORR) activity of the electrocatalysts was investigated in acid media using the rotating disk electrode (RDE) system. Accelerated durability test (ADT) results showed that photo-deposited Pt nanoparticles onto SnO2-C nanocomposite are more durable than those chemically deposited on carbon.
AB - Platinum nanoparticles (NPs) were photo-deposited on SnO2-C nanocomposites prepared by sol-gel method. Surface morphology of the prepared materials, examined by scanning electron microscopy (SEM) and transmission electron microscopy, confirmed selective deposition of Pt NPs on SnO2 nanoclusters formed on carbon surface. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) analysis, cyclic voltammetry (CV) and CO stripping experiments revealed modification of the electronic properties of the Pt NPs photo-deposited on the oxide-carbon composite in comparison to Pt/C prepared by the carbonyl chemical route. Rietveld refinement was employed to identify existing phases of catalysts and to determine the crystallite size. Micro-strain and intrinsic stacking fault increased and decreased, respectively, as a function of crystallite size. Pt loadings were determined by inductively coupled plasma mass spectrometry (ICP-MS). The oxygen reduction reaction (ORR) activity of the electrocatalysts was investigated in acid media using the rotating disk electrode (RDE) system. Accelerated durability test (ADT) results showed that photo-deposited Pt nanoparticles onto SnO2-C nanocomposite are more durable than those chemically deposited on carbon.
KW - Electrocatalysis
KW - Oxygen reduction reaction
KW - Photo-deposition
KW - Pt nanoparticles
KW - Tin dioxide
UR - http://www.scopus.com/inward/record.url?scp=85067047054&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2019.05.104
DO - 10.1016/j.electacta.2019.05.104
M3 - Artículo
SN - 0013-4686
VL - 316
SP - 162
EP - 172
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -