Tetrahexahedral Pt Nanoparticles: Comparing the Oxygen Reduction Reaction under Transient vs Steady-State Conditions

Deng, Y. J.; Wiberg, Gustav; Zana, Alessandro; Sun, S. G.; Arenz, Matthias (2017). Tetrahexahedral Pt Nanoparticles: Comparing the Oxygen Reduction Reaction under Transient vs Steady-State Conditions. ACS Catalysis, 7(1), pp. 1-6. American Chemical Society 10.1021/acscatal.6b02201

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In this work, we have synthesized tetrahexahedral (THH) Pt nanoparticles (NPs) enclosed with {730} high-index facets using a one-step square wave potential procedure. The catalytic activity of the THH NPs toward the oxygen reduction reaction (ORR) is studied under both transient and steady-state conditions. As a benchmark, the ORR activity is compared with those of polycrystalline Pt and a commercial Pt/C catalyst. The results show that, under transient conditions, the catalytic performance of the THH Pt NPs and Pt/C are approximately the same and about 2 times lower than that of polycrystalline Pt. However, under steady-state conditions the THH Pt NPs perform considerably better than Pt/C. Under steadystate conditions THH Pt NPs are even slightly more active than polycrystalline Pt.

Item Type:

Journal Article (Original Article)


08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Wiberg, Gustav; Zana, Alessandro and Arenz, Matthias


500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry




American Chemical Society




Matthias Arenz

Date Deposited:

16 Apr 2018 16:11

Last Modified:

25 Oct 2019 23:06

Publisher DOI:


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Additional Information:

Notes: Eh4zu Times Cited:3 Cited References Count:61 Date: 2017

Uncontrolled Keywords:

thh pt nanoparticles oxygen reduction reaction steady-state conditions high-index facets shape-controlled synthesis deep eutectic solvents automotive fuel-cells platinum nanocrystals alloy electrocatalysts anisotropic growth alkaline-solution pemfc catalysts pt-catalysts





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