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贵金属纳米粒子由于其非常独特的光学特性和表面活性, 在光子学、 催化和生物标识等方面都有非常重要的应用. 采用离子溅射和后续热处理相结合的方法在玻璃表面形成了尺寸大约为6080 nm的单分散的球形金纳米粒子. 在适当的温度条件下, 采用步进式增加的强直流电场, 实现了金纳米粒子的电场辅助溶解过程. 在玻璃表面的不同颜色区域, 初始球形的金纳米粒子溶解成月蚀状形貌. 结合不同颜色区域内金纳米粒子的表面等离子体共振吸收性质和扫描电镜照片, 研究了实验条件对金纳米粒子性质的影响. 结合电场辅助溶解实验过程中的电流-电压特性, 分析了金纳米粒子在强直流电场辅助下溶解的物理过程: 金粒子中动出的电子向阳极的隧穿过程作为开始, 随后是金阳离子向玻璃基体中的传输过程和阴极提供的电子与带有正电荷的金粒子相结合的过程. 详细讨论了电场辅助溶解法实现金纳米粒子形貌控制的物理机制.Noble metal nanoparticles have potential applications in photonics, catalysis, and bio-labeling, owing to their much unique optical properties and surface activities. Monodisperse spherical Au nanoparticles with sizes in a range of about 60-80 nm are formed on the glass surfaces via ion sputtering and follow-up heat treatment. At an appropriate temperature, the electric field assisted dissolution process of Au nanoparticles is realized by the strong direct current electric field in step-like feature. In the different color areas of glass surface, it can be found that the original spherical Au nanoparticles are dissolved into the particles with the shape of a lunar eclipse. From surface plasmon resonance absorption properties and scattering electron microscopy images of Au nanoparticles in the different color areas, the influence of experimental condition on property of gold nanoparticle is demonstrated. From the current-voltage characteristics in electric field assisted dissolution experimental process, the physical process of Au nanoparticle dissolution under strong direct current electric field is analysed: the tunneling process of ejected electrons from Au particles to the anode starts, then followed by transfer process of Au cations to the glass matrix and the combination process of electrons from cathode with a positive charge Au particles. The physical mechanism of morphology control of Au nanoparticles realized by electric field assisted dissolution method is discussed in detail.
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Keywords:
- Au nanoparticles /
- electric field assisted dissolution /
- surface plasmon resonance /
- current-voltage characteristics
[1] Engheta N 2007 Science 317 1698
[2] Qu S L, Zhao C J, Gao Y C, Song Y L, Liu S T, Qiu J R, Zhu C S 2005 Acta Phys. Sin. 54 139 (in Chinese) [曲士良, 赵崇军, 高亚臣, 宋瑛林, 刘树田, 邱建荣, 朱从善 2005 54 139]
[3] Yuan H, Ma W H, Chen C C, Zhao J C, Liu J W, Zhu H Y, Gao X P 2007 Chem. Mater. 19 1592
[4] Zhu B H, Wang F F, Zhang K, Ma G H, Guo L J, Qian S X 2007 Acta Phys. Sin. 56 4024 (in Chinese) [朱宝华, 王芳芳, 张琨, 马国宏, 郭立俊, 钱士雄 2007 56 4024]
[5] Shang C, Liu Z P 2011 J. Am. Chem. Soc. 133 9938
[6] Nguyen D T, Kim D J, Kim K S 2011 Micron 42 207
[7] Schmitt-Rink S, Miller D A B, Chemla D S 1987 Phys. Rev. B 35 8113
[8] Hao P, Wu Y H, Zhang P 2010 Acta Phys. Sin. 59 6532 (in Chinese) [郝鹏, 吴一辉, 张平 2010 59 6532]
[9] Depairs O, Kazansky P G, Abdolvand A, Podipensky A, Seifert G, Graener H 2004 Appl. Phys. Lett. 85 872
[10] Podipensky A, Abdolvand A, Seifert G, Depairs O, Kazansky P G 2004 J. Phys. Chem. B 108 17699
[11] Deparis O, Kazansky P G, Podlipensky A, Abdolvand A, Selfert G 2006 J. Appl. Phys. 100 044318
[12] Janicki V, Sancho-Parramon J, Peiró F, Arbiol J 2010 Appl. Phys. B 98 93
[13] Lipovskii A A, Melehin V G, Petrikov V D 2006 Tech. Phys. Lett. 32 275
[14] Baresna M, Kazansky P G, Deparis O, Carvalho I C S, Takahashi S, Zayats A 2010 Adv. Mater. 22 4368
[15] Zou Z Y, Chen X J, Wang Q, Qu S L, Wang X Y 2008 J. Appl. Phys. 104 113113
[16] Abdolvand A, Podipensky A, Matthias S, Syrowatka F, Gösele U, Seifert G, Graener H 2005 Adv. Mater. 17 2983
[17] Lipovskii A A, Kuittinen M, Karvinen P, Leinonen K, Melehin V G, Zhurikhina V V, Svirko Y P 2008 Nanotechnology 19 415304
[18] Link S, EI-Sayed M 1999 J. Phys. Chem. B 103 8410
[19] Kelly K L, Coronado E, Zhao L L, Schatz G C 2003 J. Phys. Chem. B 107 668
[20] Sheng P 1980 Phys. Rev. Lett. 45 60
[21] Raffi M, Akhter J I, Hasan M M 2006 Chem. Phys. 99 405
[22] Plech A, Cerna R, Kotaidis V, Hudert F, Bartels A, Dekorsy T 2007 Nano Lett. 7 1026
[23] Oonishi T, Sato S, Yao H, Kimura K 2007 J. Appl. Phys. 101 114314
[24] Sancho-Parramon J, Abdolvand A, Podipensky A, Seifert G, Graener H, Syrowatka F 2006 Appl. Opt. 45 8874
[25] Snow A W, Wohltjen H 1998 Chem. Mater. 10 947
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[1] Engheta N 2007 Science 317 1698
[2] Qu S L, Zhao C J, Gao Y C, Song Y L, Liu S T, Qiu J R, Zhu C S 2005 Acta Phys. Sin. 54 139 (in Chinese) [曲士良, 赵崇军, 高亚臣, 宋瑛林, 刘树田, 邱建荣, 朱从善 2005 54 139]
[3] Yuan H, Ma W H, Chen C C, Zhao J C, Liu J W, Zhu H Y, Gao X P 2007 Chem. Mater. 19 1592
[4] Zhu B H, Wang F F, Zhang K, Ma G H, Guo L J, Qian S X 2007 Acta Phys. Sin. 56 4024 (in Chinese) [朱宝华, 王芳芳, 张琨, 马国宏, 郭立俊, 钱士雄 2007 56 4024]
[5] Shang C, Liu Z P 2011 J. Am. Chem. Soc. 133 9938
[6] Nguyen D T, Kim D J, Kim K S 2011 Micron 42 207
[7] Schmitt-Rink S, Miller D A B, Chemla D S 1987 Phys. Rev. B 35 8113
[8] Hao P, Wu Y H, Zhang P 2010 Acta Phys. Sin. 59 6532 (in Chinese) [郝鹏, 吴一辉, 张平 2010 59 6532]
[9] Depairs O, Kazansky P G, Abdolvand A, Podipensky A, Seifert G, Graener H 2004 Appl. Phys. Lett. 85 872
[10] Podipensky A, Abdolvand A, Seifert G, Depairs O, Kazansky P G 2004 J. Phys. Chem. B 108 17699
[11] Deparis O, Kazansky P G, Podlipensky A, Abdolvand A, Selfert G 2006 J. Appl. Phys. 100 044318
[12] Janicki V, Sancho-Parramon J, Peiró F, Arbiol J 2010 Appl. Phys. B 98 93
[13] Lipovskii A A, Melehin V G, Petrikov V D 2006 Tech. Phys. Lett. 32 275
[14] Baresna M, Kazansky P G, Deparis O, Carvalho I C S, Takahashi S, Zayats A 2010 Adv. Mater. 22 4368
[15] Zou Z Y, Chen X J, Wang Q, Qu S L, Wang X Y 2008 J. Appl. Phys. 104 113113
[16] Abdolvand A, Podipensky A, Matthias S, Syrowatka F, Gösele U, Seifert G, Graener H 2005 Adv. Mater. 17 2983
[17] Lipovskii A A, Kuittinen M, Karvinen P, Leinonen K, Melehin V G, Zhurikhina V V, Svirko Y P 2008 Nanotechnology 19 415304
[18] Link S, EI-Sayed M 1999 J. Phys. Chem. B 103 8410
[19] Kelly K L, Coronado E, Zhao L L, Schatz G C 2003 J. Phys. Chem. B 107 668
[20] Sheng P 1980 Phys. Rev. Lett. 45 60
[21] Raffi M, Akhter J I, Hasan M M 2006 Chem. Phys. 99 405
[22] Plech A, Cerna R, Kotaidis V, Hudert F, Bartels A, Dekorsy T 2007 Nano Lett. 7 1026
[23] Oonishi T, Sato S, Yao H, Kimura K 2007 J. Appl. Phys. 101 114314
[24] Sancho-Parramon J, Abdolvand A, Podipensky A, Seifert G, Graener H, Syrowatka F 2006 Appl. Opt. 45 8874
[25] Snow A W, Wohltjen H 1998 Chem. Mater. 10 947
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