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Oxygen Electrocatalysis at Mn-III-O-x-C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?

文献类型：期刊论文

作者Wu, Kuang-Hsu1,2; Huang, Xing3; Tahini, Hassan4; Kappen, Peter5; Huang, Rui6; Tan, Xin4; Jang, Ling-Yun7; Ding, Yuxiao8; Smith, Sean C.4; Qi, Wei6
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2019-01-09
卷号11期号:1页码:706-713
关键词hybrid heterojunction single-layer catalyst synergistic effect cooperative catalysis oxygen reduction
ISSN号1944-8244
DOI10.1021/acsami.8b16325
通讯作者Wu, Kuang-Hsu(kuang-hsu.wu@unsw.edu.au) ; Wang, Da-Wei(da-wei.wang@unsw.edu.au)
英文摘要The interface at the metal oxide-carbon hybrid heterojunction is the source to the well-known "synergistic effect" in catalysis. Understanding the structure-function properties is key for designing more advanced catalyst-support systems. Using a model Mn-III-O-x single-layer catalyst on carbon, we herein report a full elucidation to the catalytic synergism at the hybrid heterojunction in the oxygen reduction reaction (ORR). The successful fabrication of the single-layer catalyst from bottom-up is fully characterized by the X-ray absorption fine structure and high-resolution transmission electron microscopy. For oxygen electrocatalysis over this model hybrid heterostructure, our results, from both theory and experiment, show that the synergistic ORR truly undergoes a cooperated two-step electrocatalysis with catalytic promotion (Delta E-onset = 60 mV) near the heterojunction and over the single-layer catalyst through an interfacial electronic interplay, rather than an abstruse transition towards a one-step dissociative pathway. Finally, we report a superior peroxide-reducing activity of 432.5 mA cm(-2) mg((M))(-1) over the Mn-III-O-x single-layer.
资助项目University of New South Wales (UNSW) ; University of Queensland (UQ) ; Chinese Academy of Sciences ; Australian Research Council (ARC) Discovery Project[DP160103244] ; UNSW Faculty-Funded Research Fellowship ; Australian Government ; Government of Western Australia
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000455561200073
出版者AMER CHEMICAL SOC
资助机构University of New South Wales (UNSW) ; University of Queensland (UQ) ; Chinese Academy of Sciences ; Australian Research Council (ARC) Discovery Project ; UNSW Faculty-Funded Research Fellowship ; Australian Government ; Government of Western Australia
源URL[http://ir.imr.ac.cn/handle/321006/131295]  
专题金属研究所_中国科学院金属研究所
通讯作者Wu, Kuang-Hsu; Wang, Da-Wei
作者单位1.Univ New South Wales, Sch Chem Engn, PartCat Res Grp, Sydney, NSW 2052, Australia
2.Univ Queensland, Sch Chem & Mol Biosci, Brisbane, Qld 4072, Australia
3.Max Planck Gesell, Fritz Haber Inst, AC Dept, D-14195 Berlin, Germany
4.Australian Natl Univ, Res Sch Phys & Engn, Integrated Mat Design Lab, Canberra, ACT 2601, Australia
5.Australian Synchrotron, Synchrotron Light Source, Melbourne, Vic 3168, Australia
6.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
7.Natl Synchrotron Radiat Res Ctr, Res Div, Hsinchu 300, Taiwan
8.Max Planck Inst Chem Energy Convers, D-45470 Mulheim, Germany
9.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian, Liaoning 116023, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Kuang-Hsu,Huang, Xing,Tahini, Hassan,et al. Oxygen Electrocatalysis at Mn-III-O-x-C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(1):706-713.
APA Wu, Kuang-Hsu.,Huang, Xing.,Tahini, Hassan.,Kappen, Peter.,Huang, Rui.,...&Wang, Da-Wei.(2019).Oxygen Electrocatalysis at Mn-III-O-x-C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?.ACS APPLIED MATERIALS & INTERFACES,11(1),706-713.
MLA Wu, Kuang-Hsu,et al."Oxygen Electrocatalysis at Mn-III-O-x-C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?".ACS APPLIED MATERIALS & INTERFACES 11.1(2019):706-713.

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来源：金属研究所

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