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The metal Pd is deposited on semiconducting single-walled carbon nanotubes (SWNTs) by physical vapor deposition. The image of scanning electron microscopy shows that the Pd nanoparticles (10—30 nm) are formed on the carbon nanotubes. It is found by the conductive atomic force microscopy that with the increase of Pd nanoparticles, the semiconducting carbon nanotube is changed gradually into a metallic one. Furthermore, our density functional theory calculation demonstrates that with the Pd adsorption increasing the band gap of the SWNT becomes smaller, and eventually disappears, which is in good agreement with the experimental result.
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Keywords:
- single-walled carbon nanotubes /
- Pd nanopaticles /
- conductive atomic force microscope /
- first principles calculations
[1] Quinn B M, Dekker C, Lemay S G 2005 J. Am. Chem. Soc. 127 6146
[2] Kim Y T, Ohshima K, Higashimine K, Uruga T, Takata M, Suematsu H, Mitani T 2006 Angew Chem. Int. Ed. 45 407
[3] Wildgoose G G, Banks C E, Compton R G 2006 Small 2 182
[4] Ciraci S, Dag S, Yildirim T, Gülseren O, Senger R T 2004 J. Phys.: Condens. Matter 16 R901
[5] Qu L T, Dai L M, Osawa E 2006 J. Am. Chem. Soc. 128 5523
[6] Lin Y, Watson K A, Ghose S, Smith J G, Williams T V, Crooks R E, Cao W, Connell J W 2009 ACS Nano 3 871
[7] Tong L M, Li Z P, Zhu T, Xu H X, Liu Z F 2008 J. Phys. Chem. C 112 7119
[8] Yang C K, Zhao J J, Lu J P 2004 Nano Lett. 4 561
[9] Ganguly U, Kan E C, Zhang Y 2005 Appl. Phys. Lett. 87 043108
[10] Kong J, Chapline M G, Dai H J 2001 Adv. Mater. 13 1384
[11] Star A, Joshi V, Skarupo S, Thomas D, Gabriel J C P 2006 J. Phys. Chem. B 110 21014
[12] Kim B K, Park N, Na P S, So H M, Kim J J, Kim H, Kong K J, Chang H, Ryu B H, Choi Y M, Lee J O 2006 Nanotechnology 17 496
[13] Stadermann M, Papadakis S J, Falvo M R, Fu Q, Liu J, Fridman Y, Boland J J, Superfine R, Washburn S 2005 Phys. Rev. B 72 245406
[14] Sundqvist P, Garcia-Vidal F J, Flores F, Moreno-Moreno M, Gómez-Navarro C, Bunch J S, Gomez-Herrero J 2007 Nano Lett. 7 2568
[15] Kodama Y, Sato R, Inami N, Shikoh E, Yamamoto Y, Hori H 2007 Appl. Phys. Lett. 91 133515
[16] Zhou W W, Han Z Y, Wang J Y, Zhang Y, Jin Z, Sun X, Zhang Y W, Yan C H, Li Y 2006 Nano Lett. 6 2987
[17] Wang J, Jin Z, Cheng J, Li Y 2009 J. Phys. Chem. C 113 8132
[18] Zhao H B, Li Z, Li R, Zhang Z H,Zhang Y,Liu Y,Li Y 2009 Acta Phys. Sin. 58 373(in Chinese) [赵华波、李 震、李 睿、张朝晖、张 岩、刘 宇、李 彦 2009 物理学报 58 373]
[19] Purewal M S, Hong B H, Ravi A, Chandra B, Hone J, Kim P 2007 Phys. Rev. Lett. 9 2568
[20] Durgun E, Dag S, Bagci V M K, Gulseren O, Yildirim T, Ciraci S 2003 Phys. Rev. B 67 201401R
[21] Yagi Y, Briere T M, Sluiter M H F, Kumar V, Farajian A A, Kawazoe Y 2004 Phys. Rev. B 69 075414
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[1] Quinn B M, Dekker C, Lemay S G 2005 J. Am. Chem. Soc. 127 6146
[2] Kim Y T, Ohshima K, Higashimine K, Uruga T, Takata M, Suematsu H, Mitani T 2006 Angew Chem. Int. Ed. 45 407
[3] Wildgoose G G, Banks C E, Compton R G 2006 Small 2 182
[4] Ciraci S, Dag S, Yildirim T, Gülseren O, Senger R T 2004 J. Phys.: Condens. Matter 16 R901
[5] Qu L T, Dai L M, Osawa E 2006 J. Am. Chem. Soc. 128 5523
[6] Lin Y, Watson K A, Ghose S, Smith J G, Williams T V, Crooks R E, Cao W, Connell J W 2009 ACS Nano 3 871
[7] Tong L M, Li Z P, Zhu T, Xu H X, Liu Z F 2008 J. Phys. Chem. C 112 7119
[8] Yang C K, Zhao J J, Lu J P 2004 Nano Lett. 4 561
[9] Ganguly U, Kan E C, Zhang Y 2005 Appl. Phys. Lett. 87 043108
[10] Kong J, Chapline M G, Dai H J 2001 Adv. Mater. 13 1384
[11] Star A, Joshi V, Skarupo S, Thomas D, Gabriel J C P 2006 J. Phys. Chem. B 110 21014
[12] Kim B K, Park N, Na P S, So H M, Kim J J, Kim H, Kong K J, Chang H, Ryu B H, Choi Y M, Lee J O 2006 Nanotechnology 17 496
[13] Stadermann M, Papadakis S J, Falvo M R, Fu Q, Liu J, Fridman Y, Boland J J, Superfine R, Washburn S 2005 Phys. Rev. B 72 245406
[14] Sundqvist P, Garcia-Vidal F J, Flores F, Moreno-Moreno M, Gómez-Navarro C, Bunch J S, Gomez-Herrero J 2007 Nano Lett. 7 2568
[15] Kodama Y, Sato R, Inami N, Shikoh E, Yamamoto Y, Hori H 2007 Appl. Phys. Lett. 91 133515
[16] Zhou W W, Han Z Y, Wang J Y, Zhang Y, Jin Z, Sun X, Zhang Y W, Yan C H, Li Y 2006 Nano Lett. 6 2987
[17] Wang J, Jin Z, Cheng J, Li Y 2009 J. Phys. Chem. C 113 8132
[18] Zhao H B, Li Z, Li R, Zhang Z H,Zhang Y,Liu Y,Li Y 2009 Acta Phys. Sin. 58 373(in Chinese) [赵华波、李 震、李 睿、张朝晖、张 岩、刘 宇、李 彦 2009 物理学报 58 373]
[19] Purewal M S, Hong B H, Ravi A, Chandra B, Hone J, Kim P 2007 Phys. Rev. Lett. 9 2568
[20] Durgun E, Dag S, Bagci V M K, Gulseren O, Yildirim T, Ciraci S 2003 Phys. Rev. B 67 201401R
[21] Yagi Y, Briere T M, Sluiter M H F, Kumar V, Farajian A A, Kawazoe Y 2004 Phys. Rev. B 69 075414
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