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Functions in cooperation for enhanced oxygen reduction reaction: the independent roles of oxygen and nitrogen sites in metal-free nanocarbon and their functional synergy
Wu, Kuang-Hsu; Wang, Da-Wei; Zong, Xu; Zhang, Bingsen; Liu, Yuefeng; Gentle, Ian R.; Su, Dang-Sheng; Su, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.; Wang, DW (reprint author), Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia.; Su, DS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China.
2017-02-21
Source PublicationROYAL SOC CHEMISTRY
ISSN2050-7488
Volume5Issue:7Pages:3239-3248
AbstractHeteroatom-doped nanocarbons are known to behave differently in the oxygen reduction reaction (ORR) in aqueous systems. In the present study, we reveal the dissimilar roles of oxygen and nitrogen sites in nanocarbons and show that the different functions can jointly promote the ORR in cooperation when appropriately combined. The oxygen sites in general could efficiently facilitate both the HO2- generation and the reduction at high overpotential, while the active nitrogen sites could activate the ORR with a lower energy requirement and simultaneously reduce both O-2 and HO2- at low overpotential. A further study to integrate the functionalities in a single nanocarbon reveals the oxidation-resistant nature of the active nitrogen functional group, a chemical basis for the reactivity.; Heteroatom-doped nanocarbons are known to behave differently in the oxygen reduction reaction (ORR) in aqueous systems. In the present study, we reveal the dissimilar roles of oxygen and nitrogen sites in nanocarbons and show that the different functions can jointly promote the ORR in cooperation when appropriately combined. The oxygen sites in general could efficiently facilitate both the HO2- generation and the reduction at high overpotential, while the active nitrogen sites could activate the ORR with a lower energy requirement and simultaneously reduce both O-2 and HO2- at low overpotential. A further study to integrate the functionalities in a single nanocarbon reveals the oxidation-resistant nature of the active nitrogen functional group, a chemical basis for the reactivity.
description.department[wu, kuang-hsu ; zhang, bingsen ; su, dang-sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [wu, kuang-hsu ; gentle, ian r.] univ queensland, sch chem & mol biosci, brisbane, qld 4072, australia ; [wang, da-wei] univ new south wales, sch chem engn, sydney, nsw 2052, australia ; [zong, xu] chinese acad sci, dalian inst chem phys, state key lab catalysis, dalian 116023, peoples r china ; [liu, yuefeng ; su, dang-sheng] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, dalian 116023, peoples r china
Subject AreaChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationUniversity of Queensland; Institute of Metal Research, Chinese Academy of Sciences [2015TW1GB0001, 2017PM0002]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79188
Collection中国科学院金属研究所
Corresponding AuthorSu, DS (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.; Wang, DW (reprint author), Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia.; Su, DS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China.
Recommended Citation
GB/T 7714
Wu, Kuang-Hsu,Wang, Da-Wei,Zong, Xu,et al. Functions in cooperation for enhanced oxygen reduction reaction: the independent roles of oxygen and nitrogen sites in metal-free nanocarbon and their functional synergy[J]. ROYAL SOC CHEMISTRY,2017,5(7):3239-3248.
APA Wu, Kuang-Hsu.,Wang, Da-Wei.,Zong, Xu.,Zhang, Bingsen.,Liu, Yuefeng.,...&Su, DS .(2017).Functions in cooperation for enhanced oxygen reduction reaction: the independent roles of oxygen and nitrogen sites in metal-free nanocarbon and their functional synergy.ROYAL SOC CHEMISTRY,5(7),3239-3248.
MLA Wu, Kuang-Hsu,et al."Functions in cooperation for enhanced oxygen reduction reaction: the independent roles of oxygen and nitrogen sites in metal-free nanocarbon and their functional synergy".ROYAL SOC CHEMISTRY 5.7(2017):3239-3248.
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