TY - JOUR
T1 - The effect on the electrocatalytic activity of the chemical interaction of selenium with palladium centers
T2 - Oxygen reduction and methanol oxidation reactions in alkaline medium
AU - Vega-Granados, Karla
AU - Canaff, Christine
AU - Estudillo-Wong, Luis Alberto
AU - Alonso-Núez, Gabriel
AU - Cruz-Reyes, Juan
AU - Alonso-Vante, Nicolas
N1 - Publisher Copyright:
© 2021 IOP Publishing Ltd.
PY - 2021/8
Y1 - 2021/8
N2 - The chemical reactivity of two different selenium precursors (SeO2 and Se) with nanoparticulated palladium was studied in a simple aqueous phase synthesis to generate palladium selenides (Pd x Se y ). As confirmed by XRD, XPS, TEM and energy dispersive spectroscopy analyses, the products generated showed different degrees of selenization according to the nature of the chemical precursor. Such degree of selenization was more important with elemental selenium, in contrast to SeO2. Surface electrochemistry and CO stripping in alkaline medium, clearly revealed the different interactions and stability of Pd x Se y achieved with the Pd/C precursor depending on the selenium source. The electrocatalysis of the oxygen reduction reaction was also influenced by the Se source, first in the different degree of reactivity, and second in the selectivity of the reduction product between H2O and H2O2, as well as the tolerance to the methanol oxidation reaction.
AB - The chemical reactivity of two different selenium precursors (SeO2 and Se) with nanoparticulated palladium was studied in a simple aqueous phase synthesis to generate palladium selenides (Pd x Se y ). As confirmed by XRD, XPS, TEM and energy dispersive spectroscopy analyses, the products generated showed different degrees of selenization according to the nature of the chemical precursor. Such degree of selenization was more important with elemental selenium, in contrast to SeO2. Surface electrochemistry and CO stripping in alkaline medium, clearly revealed the different interactions and stability of Pd x Se y achieved with the Pd/C precursor depending on the selenium source. The electrocatalysis of the oxygen reduction reaction was also influenced by the Se source, first in the different degree of reactivity, and second in the selectivity of the reduction product between H2O and H2O2, as well as the tolerance to the methanol oxidation reaction.
KW - alkaline
KW - electrocatalysis
KW - oxygen reduction reaction
KW - palladium-selenides
KW - surface electrochemistry
UR - http://www.scopus.com/inward/record.url?scp=85108386255&partnerID=8YFLogxK
U2 - 10.1088/1361-648X/ac02e5
DO - 10.1088/1361-648X/ac02e5
M3 - Artículo
C2 - 34011696
AN - SCOPUS:85108386255
SN - 0953-8984
VL - 33
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 31
M1 - 314001
ER -