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Topological quantum catalyst: Dirac nodal line states and a potential electrocatalyst of hydrogen evolution in the TiSi family
Li, JX; Ma, H; Xie, Q; Feng, SB; Ullah, S; Li, RH; Dong, JH; Li, DZ; Li, YY; Chen, XQ; Chen, XQ (reprint author), Univ Sci & Technol China, Chinese Acad Sci, Sch Mat Sci & Engn, Shenyang Natl Lab Mat Sci,Inst Met Res, Shenyang 110016, Peoples R China.
2018
Source PublicationSCIENCE CHINA-MATERIALS
ISSN2095-8226
Volume61Issue:1Pages:23-29
AbstractTopological nodal line (DNL) semimetals, a closed loop of the inverted bands in its bulk phases, result in the almost flat drumhead-like non-trivial surface states (DNSSs) with an unusually high electronic density near the Fermi level. High catalytic active sites generally associated with high electronic densities around the Fermi level, high carrier mobility and a close-to-zero free energy of the adsorbed state of hydrogen (Delta G(H*)approximate to 0) are prerequisite to design alternative of precious platinum for catalyzing electrochemical hydrogen production from water. By combining these two aspects, it is natural to consider if the DNLs are a good candidate for the hydrogen evolution reaction (HER) or not because its DNSSs provide a robust platform to activate chemical reactions. Here, through first-principles calculations we reported a new DNL TiSi-type family, exhibiting a closed Dirac nodal line due to the linear band crossings in k(y)=0 plane. The hydrogen adsorbed state on the surface yields Delta G(H*) to be almost zero and the topological charge carries participate in HER. The results highlight a new routine to design topological quantum catalyst utilizing the topological DNL-induced surface bands as active sites, rather than edge sites-, vacancy-, dopant-, strain-, or heterostructure-created active sites.; Topological nodal line (DNL) semimetals, a closed loop of the inverted bands in its bulk phases, result in the almost flat drumhead-like non-trivial surface states (DNSSs) with an unusually high electronic density near the Fermi level. High catalytic active sites generally associated with high electronic densities around the Fermi level, high carrier mobility and a close-to-zero free energy of the adsorbed state of hydrogen (Delta G(H*)approximate to 0) are prerequisite to design alternative of precious platinum for catalyzing electrochemical hydrogen production from water. By combining these two aspects, it is natural to consider if the DNLs are a good candidate for the hydrogen evolution reaction (HER) or not because its DNSSs provide a robust platform to activate chemical reactions. Here, through first-principles calculations we reported a new DNL TiSi-type family, exhibiting a closed Dirac nodal line due to the linear band crossings in k(y)=0 plane. The hydrogen adsorbed state on the surface yields Delta G(H*) to be almost zero and the topological charge carries participate in HER. The results highlight a new routine to design topological quantum catalyst utilizing the topological DNL-induced surface bands as active sites, rather than edge sites-, vacancy-, dopant-, strain-, or heterostructure-created active sites.
description.department[li, jiangxu ; ma, hui ; xie, qing ; feng, shaobo ; ullah, sami ; li, ronghan ; li, dianzhong ; li, yiyi ; chen, xing-qiu] univ sci & technol china, chinese acad sci, sch mat sci & engn, shenyang natl lab mat sci,inst met res, shenyang 110016, peoples r china ; [ma, hui ; dong, junhua] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china ; [xie, qing ; ullah, sami] univ chinese acad sci, beijing 100049, peoples r china
KeywordTransition-metals Weyl Fermion Semimetal Mos2 Surface Nanosheets Discovery Silicides Oxidation Crystals
Subject AreaMaterials Science, Multidisciplinary
Funding OrganizationNational Science Fund for Distinguished Young Scholars [51725103]; National Natural Science Foundation of China [51671193, 51474202]; Science Challenging Project [TZ2016004]; special program for applied research of the NSFC-Guangdong Joint Fund (the second phase) [U1501501]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79601
Collection中国科学院金属研究所
Corresponding AuthorChen, XQ (reprint author), Univ Sci & Technol China, Chinese Acad Sci, Sch Mat Sci & Engn, Shenyang Natl Lab Mat Sci,Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Li, JX,Ma, H,Xie, Q,et al. Topological quantum catalyst: Dirac nodal line states and a potential electrocatalyst of hydrogen evolution in the TiSi family[J]. SCIENCE CHINA-MATERIALS,2018,61(1):23-29.
APA Li, JX.,Ma, H.,Xie, Q.,Feng, SB.,Ullah, S.,...&Chen, XQ .(2018).Topological quantum catalyst: Dirac nodal line states and a potential electrocatalyst of hydrogen evolution in the TiSi family.SCIENCE CHINA-MATERIALS,61(1),23-29.
MLA Li, JX,et al."Topological quantum catalyst: Dirac nodal line states and a potential electrocatalyst of hydrogen evolution in the TiSi family".SCIENCE CHINA-MATERIALS 61.1(2018):23-29.
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