TY - JOUR
T1 - Reaction of H2 with polyoxometalate supported Rhodium(0) and Iridium(0) nanoparticles in aqueous suspensions
T2 - a kinetic study
AU - Vijay, Aswin Kottapurath
AU - Meyerstein, Dan
AU - Marks, Vered
AU - Albo, Yael
N1 - Publisher Copyright:
© 2022 The Royal Society of Chemistry.
PY - 2022/6/23
Y1 - 2022/6/23
N2 - The kinetics of the reactions of H2 with rhodium and iridium nanoparticles (NPs), in aqueous suspensions, were studied by following their catalytic reduction of PW12O403−, POM. The reaction of H2 with the same size (∼2.5 nm) of two different nanoparticles was carried out to check how the nature of the nanoparticles affects the reaction kinetics. Herein we report the first kinetic measurement of H2 + Rh0 and Ir0 NPs in the absence of an electric field. A comparison of the apparent rate constants of the reactions Rh0-NPs and Ir0-NPs + H2 to the previously reported Pt0-NPs + H2 indicates that the rates decrease along the series k(Pt) > k(Rh) > k(Ir), though they are of the same order of magnitude. The adsorption of hydrogen and/or H atom can affect the structure of the M0-NPs.
AB - The kinetics of the reactions of H2 with rhodium and iridium nanoparticles (NPs), in aqueous suspensions, were studied by following their catalytic reduction of PW12O403−, POM. The reaction of H2 with the same size (∼2.5 nm) of two different nanoparticles was carried out to check how the nature of the nanoparticles affects the reaction kinetics. Herein we report the first kinetic measurement of H2 + Rh0 and Ir0 NPs in the absence of an electric field. A comparison of the apparent rate constants of the reactions Rh0-NPs and Ir0-NPs + H2 to the previously reported Pt0-NPs + H2 indicates that the rates decrease along the series k(Pt) > k(Rh) > k(Ir), though they are of the same order of magnitude. The adsorption of hydrogen and/or H atom can affect the structure of the M0-NPs.
UR - http://www.scopus.com/inward/record.url?scp=85133557266&partnerID=8YFLogxK
U2 - 10.1039/d2nj02253b
DO - 10.1039/d2nj02253b
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AN - SCOPUS:85133557266
SN - 1144-0546
VL - 46
SP - 13643
EP - 13650
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 28
ER -