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 |
| 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. |
| WOS关键词 | REDUCED GRAPHENE OXIDE ; EFFICIENT ELECTROCATALYST ; REDUCTION REACTION ; COBALT OXIDE ; NANOCRYSTALS |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000455561200073 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372879 |
| 专题 | 大连化学物理研究所 |
| 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：大连化学物理研究所
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