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

doi:10.1021/acsami.8b16325

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	Oxygen Electrocatalysis at Mn-III-O-x-C Hybrid Heterojunction: An Electronic Synergy or Cooperative Catalysis?
	Wu, Kuang-Hsu 2,3; Huang, Xing 4; Tahini, Hassan 5; Kappen, Peter 6; Huang, Rui 7; Tan, Xin 5; Jang, Ling-Yun 1; Ding, Yuxiao 8; Smith, Sean C.5; Qi, Wei 7
刊名	ACS APPLIED MATERIALS & INTERFACES
	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
DOI	10.1021/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
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000455561200073
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
内容类型	期刊论文
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.Natl Synchrotron Radiat Res Ctr, Res Div, Hsinchu 300, Taiwan 2.Univ New South Wales, Sch Chem Engn, PartCat Res Grp, Sydney, NSW 2052, Australia 3.Univ Queensland, Sch Chem & Mol Biosci, Brisbane, Qld 4072, Australia 4.Max Planck Gesell, Fritz Haber Inst, AC Dept, D-14195 Berlin, Germany 5.Australian Natl Univ, Res Sch Phys & Engn, Integrated Mat Design Lab, Canberra, ACT 2601, Australia 6.Australian Synchrotron, Synchrotron Light Source, Melbourne, Vic 3168, Australia 7.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 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.