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The Oxygen Reduction Reaction Rate of Metallic Nanoparticles during Catalyzed Oxidation.


ABSTRACT: This work reports the oxygen reduction reaction (ORR) kinetics of metal nanoparticle catalysts between 500 and 600?°C at low oxygen partial pressures. Ex situ and in situ TEM measurements demonstrate catalyzed nanowire growth initially follows linear kinetics; characteristic of being ORR rate limited. The ORR rates of Ag, Au, Cu, Ni, Pd, Rh and Pt measured at 600?°C form a volcano plot versus relative oxidation potential. Cu nanoparticles produce the maximum ORR rate under these conditions.

SUBMITTER: Sun K 

PROVIDER: S-EPMC5539166 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature

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The Oxygen Reduction Reaction Rate of Metallic Nanoparticles during Catalyzed Oxidation.

Sun Ke K   Xue Jinbo J   Tai Kaiping K   Dillon Shen J SJ  

Scientific reports 20170801 1


This work reports the oxygen reduction reaction (ORR) kinetics of metal nanoparticle catalysts between 500 and 600 °C at low oxygen partial pressures. Ex situ and in situ TEM measurements demonstrate catalyzed nanowire growth initially follows linear kinetics; characteristic of being ORR rate limited. The ORR rates of Ag, Au, Cu, Ni, Pd, Rh and Pt measured at 600 °C form a volcano plot versus relative oxidation potential. Cu nanoparticles produce the maximum ORR rate under these conditions. ...[more]

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