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

Yu-Jia Deng; Gustav Karl Henrik Wiberg; Alessandro Zana; Shi-Gang Sun; Matthias Arenz

doi:10.1021/acscatal.6b02201

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

Yu-Jia Deng, Gustav Karl Henrik Wiberg, Alessandro Zana, Shi-Gang Sun, Matthias Arenz

8 Citationer (Scopus)

Abstract

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 steady-state conditions THH Pt NPs are even slightly more active than polycrystalline Pt

Originalsprog	Engelsk
Tidsskrift	ACS Catalysis
Vol/bind	7
Udgave nummer	1
Sider (fra-til)	1-6
Antal sider	6
ISSN	2155-5435
DOI	https://doi.org/10.1021/acscatal.6b02201
Status	Udgivet - 6 jan. 2017

Adgang til dokumentet

10.1021/acscatal.6b02201

Citationsformater

@article{46e9e50e6fe14b2d9a1a5c69173728d1,

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

abstract = "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 steady-state conditions THH Pt NPs are even slightly more active than polycrystalline Pt",

keywords = "THH, Pt, nanoparticles, oxygen reduction reaction, steady-state conditions",

author = "Yu-Jia Deng and Wiberg, {Gustav Karl Henrik} and Alessandro Zana and Shi-Gang Sun and Matthias Arenz",

year = "2017",

month = jan,

day = "6",

doi = "10.1021/acscatal.6b02201",

language = "English",

volume = "7",

pages = "1--6",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "American Chemical Society",

number = "1",

}

TY - JOUR

T1 - Tetrahexahedral Pt Nanoparticles: Comparing the Oxygen Reduction Reaction under Transient vs Steady-State Conditions

AU - Deng, Yu-Jia

AU - Wiberg, Gustav Karl Henrik

AU - Zana, Alessandro

AU - Sun, Shi-Gang

AU - Arenz, Matthias

PY - 2017/1/6

Y1 - 2017/1/6

N2 - 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 steady-state conditions THH Pt NPs are even slightly more active than polycrystalline Pt

AB - 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 steady-state conditions THH Pt NPs are even slightly more active than polycrystalline Pt

KW - THH

KW - Pt

KW - nanoparticles

KW - oxygen reduction reaction

KW - steady-state conditions

U2 - 10.1021/acscatal.6b02201

DO - 10.1021/acscatal.6b02201

M3 - Journal article

SN - 2155-5435

VL - 7

SP - 1

EP - 6

JO - ACS Catalysis

JF - ACS Catalysis

IS - 1

ER -

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

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater