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

[img] Text
acscatal.6b02201.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (1MB) | Request a copy

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)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Wiberg, Gustav; Zana, Alessandro and Arenz, Matthias

Subjects:

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

ISSN:

2155-5435

Publisher:

American Chemical Society

Language:

English

Submitter:

Matthias Arenz

Date Deposited:

16 Apr 2018 16:11

Last Modified:

16 Apr 2018 16:11

Publisher DOI:

10.1021/acscatal.6b02201

Related URLs:

Web of Science ID:

000391783200001

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

BORIS DOI:

10.7892/boris.111624

URI:

https://boris.unibe.ch/id/eprint/111624

Actions (login required)

Edit item Edit item
Provide Feedback