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A Co-N-4 moiety embedded into graphene as an efficient single-atom-catalyst for NO electrochemical reduction: a computational study
Wang, ZX; Zhao, JX; Wang, JY; Cabrera, CR; Chen, ZF; Zhao, JX (reprint author), Harbin Normal Univ, Key Lab Photon & Elect Bandgap Mat, Coll Chem & Chem Engn, Minist Educ, Harbin 150025, Heilongjiang, Peoples R China.; Chen, ZF (reprint author), Univ Puerto Rico, Dept Chem, Rio Piedras Campus, San Juan, PR 00931 USA.
2018-05-07
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume6Issue:17Pages:7547-7556
AbstractElectrochemical reduction of nitric oxide (NOER) is a promising technology for the removal of harmful N-containing species in groundwater under mild conditions. In this work, by means of density functional theory computations, we systematically investigated the potential of utilizing experimentally feasible transition metal-N-4/graphenes as NOER catalysts. Our results revealed that NO molecules can be moderately activated on a Co-N-4 moiety embedded into graphene, and the subsequent NOER steps can proceed to form either NH3 at low coverages or N2O at higher coverages. Especially, the computed onset potential of NOER on Co-N-4/graphene (ca. -0.12 V) is comparable to (or even better than) those on well-established Pt-based catalysts. Thus, Co-N-4/graphene is a promising single-atom-catalyst with high efficiency for NO electrochemical reduction, which opens a new avenue for NO reduction for environmental remediation.; Electrochemical reduction of nitric oxide (NOER) is a promising technology for the removal of harmful N-containing species in groundwater under mild conditions. In this work, by means of density functional theory computations, we systematically investigated the potential of utilizing experimentally feasible transition metal-N-4/graphenes as NOER catalysts. Our results revealed that NO molecules can be moderately activated on a Co-N-4 moiety embedded into graphene, and the subsequent NOER steps can proceed to form either NH3 at low coverages or N2O at higher coverages. Especially, the computed onset potential of NOER on Co-N-4/graphene (ca. -0.12 V) is comparable to (or even better than) those on well-established Pt-based catalysts. Thus, Co-N-4/graphene is a promising single-atom-catalyst with high efficiency for NO electrochemical reduction, which opens a new avenue for NO reduction for environmental remediation.
description.department[wang, zhongxu ; zhao, jingxiang] harbin normal univ, key lab photon & elect bandgap mat, coll chem & chem engn, minist educ, harbin 150025, heilongjiang, peoples r china ; [wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [cabrera, carlos r. ; chen, zhongfang] univ puerto rico, dept chem, rio piedras campus, san juan, pr 00931 usa
KeywordElectrocatalytic Nitrate Reduction Nitric-oxide Oxygen Reduction Nitrogen-cycle Platinum-electrode Hydrogen Evolution Metal-electrodes Neutral Media c Catalyst Fuel-cell
Subject AreaChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationExcellent Young Foundation of Harbin Normal University [XKYQ201304]; NSF-CREST Center for Innovation, Research and Education in Environmental Nanotechnology (CIRE2N) [HRD-1736093]; NASA [17-EPSCoRProp-0032]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79313
Collection中国科学院金属研究所
Corresponding AuthorZhao, JX (reprint author), Harbin Normal Univ, Key Lab Photon & Elect Bandgap Mat, Coll Chem & Chem Engn, Minist Educ, Harbin 150025, Heilongjiang, Peoples R China.; Chen, ZF (reprint author), Univ Puerto Rico, Dept Chem, Rio Piedras Campus, San Juan, PR 00931 USA.
Recommended Citation
GB/T 7714
Wang, ZX,Zhao, JX,Wang, JY,et al. A Co-N-4 moiety embedded into graphene as an efficient single-atom-catalyst for NO electrochemical reduction: a computational study[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(17):7547-7556.
APA Wang, ZX.,Zhao, JX.,Wang, JY.,Cabrera, CR.,Chen, ZF.,...&Chen, ZF .(2018).A Co-N-4 moiety embedded into graphene as an efficient single-atom-catalyst for NO electrochemical reduction: a computational study.JOURNAL OF MATERIALS CHEMISTRY A,6(17),7547-7556.
MLA Wang, ZX,et al."A Co-N-4 moiety embedded into graphene as an efficient single-atom-catalyst for NO electrochemical reduction: a computational study".JOURNAL OF MATERIALS CHEMISTRY A 6.17(2018):7547-7556.
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