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We use the density functional theory (DFT) with dispersion correction to investigate the stability and electronic structure of hydrazine (N2H4) adsorpted on Ni8Fe8/Ni (111) alloy surface. The geometries and adsorption characteristics of the structure on the Ni8Fe8 alloy surface are presented. Results show that N2H4 bridging between two iron atoms gives the strongest adsorption with an adsorption energy of -1.578 eV/N2H4. Top modes turn out to be the local minima with adsorption energies of -1.346 eV/N2H4 (for the top site on a Fe atom) and -1.061 eV/N2H4 (for the top site on a Ni atom). It is demonstrated that the bridging mode is more favorable than the top mode on the NiFe alloy surface with a coverage of 1/16 ML, and Fe atom can provide stronger adsorption site than Ni atom. The van der Waals contribution is significant with a value of about 0.4 eV/N2H4. Meanwhile, the van der Waals contribution is larger for adsorption on Fe atom than on Ni atom, and for adsorption of the bridging mode than of the top mode. We also find that the structure of N2H4 in the anti molecule, rather than the gauche molecule, is bound on the top site of Fe atom on the NiFe alloy surface with a coverage of 1/16 ML, which demonstrates that the repulsive adsorbate-adsorbate interaction is weak on the surface with low coverage. The strong interaction between the surface atom and the adsorbate contributes to the result that the lone pair electrons of N2H4 in gauche conformer are attracted by the Fe atom. In addition, for the five adsorption structures of N2H4 on Ni8Fe8/Ni(111) alloy surface, we analyze the projected electronic density of states (DOS), induced charge density and electron localisation function (ELF) slices through the Fe-N or Ni-N bonds of the adsorbed molecule on the alloy surface. It shows that the electronic DOS presents the mixture between HOMO of N2H4 and the d orbital of the surface atom, which corresponds to charge transfer between the substrate and the adsorbate. The charges are transferred mainly from N2H4 to the surface atoms, and the extents of charge transfer are different for the bridging mode and the top one which is present in the induced charge density. Furthermore, the region of localisation in the ELF slices can be found for the adsorptions between the N atom of N2H4 and the Fe or Ni atom of surface, which gives a clear view of the coordination bonds for the interactions of N–Fe or N–Ni.
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Keywords:
- hydrazine /
- adsorption /
- electronic structure /
- density functional theory
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[2] He L, Huang Y, Liu X Y, Li L, Wang A, Wang X, Mou C Y, Zhang T 2014 Appl. Catal. B: Environ. 147 779
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[8] Singh S K, Xu Q 2010 Chem. Commun. 46 6545
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[10] Manukyan K V, Cross A, Rouvimov S, Miller J, Mukasyan A S, Wolf E E 2014 Appl. Catal. A: Gen. 476 47
[11] Chen J H, Liu E K, Li Y, Qi X, Liu G D, Luo H Z, Wang W H, Wu G H 2015 Acta Phys. Sin. 64 077104 (in Chinese) [陈家华, 刘恩克, 李勇, 祁欣, 刘国栋, 罗鸿志, 王文洪, 吴光恒 2015 物理学报 64 077104]
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[19] Agusta M K, Kasai H 2012 Surf. Sci. 606 766
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[21] Deng Z, Lu X, Wen Z, Wei S, Liu Y, Fu D, Zhao L, Guo W 2013 Phys. Chem. Chem. Phys. 15 16172
[22] Zhu J P, Ma L, Zhou S M, Miao J, Jiang Y 2015 Chin. Phys. B 24 017101
[23] He Y B, Jia J F, Wu H S 2015 Appl. Surf. Sci. 339 36
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[41] Tereshchuk P, Da Silva J L F 2012 J. Phys. Chem. C 116 24695
[42] He Y B, Jia J F, Wu H S 2015 J. Phys. Chem. C 119 8763
[43] Albright T A, Burdett J K, Whangbo M H 2013 Orbital Interactions in Chemistry (2nd Ed.) (New York: John Wiley & Sons, Inc.)
[44] Kitchin J R, Nørskov J K, Barteau M A, Chen J G 2004 J. Chem. Phys. 120 10240
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[46] Becke A D, Edgecombe K E 1990 J. Chem. Phys. 92 5397
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[1] Cao N, Su J, Luo W, Cheng G 2014 Int. J. Hydrogen Energ. 39 9726
[2] He L, Huang Y, Liu X Y, Li L, Wang A, Wang X, Mou C Y, Zhang T 2014 Appl. Catal. B: Environ. 147 779
[3] Serov A, Padilla M, Roy A J, Atanassov P, Sakamoto T, Asazawa K, Tanaka H 2014 Angew. Chem. Int. Ed. 53 10336
[4] Singh S K, Zhang X B, Xu Q 2009 J. Am. Chem. Soc. 131 9894
[5] Singh S K, Xu Q 2009 J. Am. Chem. Soc. 131 18032
[6] Singh A K, Yadav M, Aranishi K, Xu Q 2012 Int. J. Hydrogen Energ. 37 18915
[7] Singh S K, Lizuka Y, Xu Q 2011 Int. J. Hydrogen Energ. 36 11794
[8] Singh S K, Xu Q 2010 Chem. Commun. 46 6545
[9] Singh S K, Singh A K, Aranishi K, Xu Q 2011 J. Am. Chem. Soc. 133 19638
[10] Manukyan K V, Cross A, Rouvimov S, Miller J, Mukasyan A S, Wolf E E 2014 Appl. Catal. A: Gen. 476 47
[11] Chen J H, Liu E K, Li Y, Qi X, Liu G D, Luo H Z, Wang W H, Wu G H 2015 Acta Phys. Sin. 64 077104 (in Chinese) [陈家华, 刘恩克, 李勇, 祁欣, 刘国栋, 罗鸿志, 王文洪, 吴光恒 2015 物理学报 64 077104]
[12] Liao J, Xie Z Q, Yuan J M, Huang Y P, Mao Y L 2014 Acta Phys. Sin. 63 163101 (in Chinese) [廖建, 谢召起, 袁健美, 黄艳平, 毛宇亮 2014 物理学报 63 163101]
[13] Li L, Xu J, Xu L F, Lian C S, Li J J, Wang J T, Gu C Z 2015 Chin. Phys. B 24 056803
[14] Daff T D, Costa D, Lisiecki I, de Leeuw N H 2009 J. Phys. Chem. C 113 15714
[15] Daff T D, de Leeuw N H 2012 J. Mater. Chem. 22 23210
[16] Tafreshi S S, Roldan A, Dzade N Y, de Leeuw N H 2014 Surf. Sci. 622 1
[17] Tafreshi S S, Roldan A, de Leeuw N H 2014 J. Phys. Chem. C 118 26103
[18] Zhang P X, Wang Y G, Huang Y Q, Zhang T, Wu G S, Li J 2011 Catal. Today 165 80
[19] Agusta M K, Kasai H 2012 Surf. Sci. 606 766
[20] McKay H L, Jenkins S J, Wales D J 2011 J. Phys. Chem. C 115 17812
[21] Deng Z, Lu X, Wen Z, Wei S, Liu Y, Fu D, Zhao L, Guo W 2013 Phys. Chem. Chem. Phys. 15 16172
[22] Zhu J P, Ma L, Zhou S M, Miao J, Jiang Y 2015 Chin. Phys. B 24 017101
[23] He Y B, Jia J F, Wu H S 2015 Appl. Surf. Sci. 339 36
[24] Pereira A O, Miranda C R 2014 Appl. Surf. Sci. 288 564
[25] Carrasco J, Liu W, Michaelides A, Tkatchenko A 2014 J. Chem. Phys. 140 084704
[26] Atodiresei N, Caciuc V, Franke J H, Blgel S 2008 Phys. Rev. B 78 045411
[27] Blöchl P E 1994 Phys. Rev. B 50 17953
[28] Kresse G, Joubert D 1999 Phys. Rev. B 59 1758
[29] Kresse G, Furthmller J 1996 Phys. Rev. B 54 11169
[30] Kresse G, Furthmller J 1996 Comp. Mater. Sci 6 15
[31] Kresse G, Hafner J 1993 Phys. Rev. B 47 558
[32] Kresse G, Hafner J 1994 Phys. Rev. B 49 14251
[33] Perdew J P, Burke K, Ernzerhof M 1997 Phys. Rev. Lett. 78 1396
[34] Perdew J P, Burke K, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865
[35] Monkhorst H J, Pack J D 1976 Phys. Rev. B 13 5188
[36] Methfessel M, Paxton A T 1989 Phys. Rev. B 40 3616
[37] Štich I, Car R, Parrinello M, Baroni S 1989 Phys. Rev. B 39 4997
[38] Momma K, Izumi F 2011 J. Appl. Crystallogr. 44 1272
[39] Grimme S, Ehrlich S, Goerigk L 2011 J. Comput. Chem. 32 1456
[40] Grimme S, Antony J, Ehrlich S, Krieg H 2010 J. Chem. Phys. 132 154104
[41] Tereshchuk P, Da Silva J L F 2012 J. Phys. Chem. C 116 24695
[42] He Y B, Jia J F, Wu H S 2015 J. Phys. Chem. C 119 8763
[43] Albright T A, Burdett J K, Whangbo M H 2013 Orbital Interactions in Chemistry (2nd Ed.) (New York: John Wiley & Sons, Inc.)
[44] Kitchin J R, Nørskov J K, Barteau M A, Chen J G 2004 J. Chem. Phys. 120 10240
[45] Burdett J K, McCormick T A 1998 J. Phys. Chem. A 102 6366
[46] Becke A D, Edgecombe K E 1990 J. Chem. Phys. 92 5397
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