Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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In-Situ Generation of Nanostructured Au Surfaces by Anodic Dissolution Followed by Cathodic Deposition

산화 용해에 연이은 환원 석출을 통한 나노구조 금 표면 형성

  • Kweon, Suji (Department of Chemistry, Chungbuk National University) ;
  • Choi, Suhee (Department of Chemistry, Chungbuk National University) ;
  • Kim, Jongwon (Department of Chemistry, Chungbuk National University)
  • Received : 2015.07.16
  • Accepted : 2015.07.29
  • Published : 2015.08.31
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Abstract

Electrochemical fabrication of nanostructured Au surfaces has received increased attention. In the present work, electrochemical modification of Au surfaces for fabricating nanostructured Au surfaces in the absence of externally added precursors is presented, which is different to the previous methods utilizing electrochemical deposition of externally added precursors. Application of anodic potential at Au surfaces in phosphate buffers containing $Br^-$ resulted in the anodic dissolution of Au, which produced Au precursors at the electrode surfaces. The resulting Au precursors were further reduced at the surface to produce nanostructured Au structures. The effects of applied potential and time on the morphology of Au nanostructures were systematically examined, from which a unique backbone type Au nanostructures was produced. The backbone type Au nanostructures exhibited high surface-enhanced Raman activity. The present work would give insights into the formation of electrochemical fabrication of nanostructured Au surfaces.

전기화학적인 방법으로 나노구조를 지니는 금 표면을 형성하는 방법에 관한 연구는 최근 많은 연구자들의 관심을 끌고 있다. 첨가된 금 전구체를 전기화학 석출에 의해 나노구조 금 표면을 형성하는 기존 연구와는 달리, 본 연구에서는 전구체를 외부에서 첨가하지 않고 금 표면을 전기 화학적으로 변형하여 표면에 나노구조체를 형성하는 방법을 제시하였다. $Br^-$이 존재하는 인산 완충용액 전해질 하에서 금 전극에 산화전위를 가해 주면 산화 용해된 금은 $Br^-$과 결합하여 전극 표면에 전구체를 형성하는데, 이렇게 형성된 표면상의 전구체를 연이어 환원시켜 주면 실시간으로 나노구조 금 표면을 형성하는 것이 가능함을 보였다. 전극에 가해주는 전위와 시간의 조절이 전극 표면에 형성되는 금 나노구조의 모양에 미치는 영향을 체계적으로 관찰한 결과 독특한 척추 모양의 금 나노구조가 형성이 되었다. 척추 모양의 금 나노구조는 표면증강 라만 분광 활성이 높은 것으로 나타났다. 본 연구에서 제시된 방법은 전구체 없이 전기화학적으로 금 전극 표면을 변형시키는 새로운 방법으로 금 나노구조 형성에 관한 연구에 도움이 될 것으로 기대한다.

Keywords

References

  1. M. C. Daniel and D. Astruc, 'Gold Nanoparticles: Assembly, Supramolecular Chemistry, Quantum-Size-Related Properties, and Applications toward Biology, Catalysis, and Nanotechnology' Chem. Rev., 104, 293 (2004). https://doi.org/10.1021/cr030698+
  2. J. Elias, M. Gizowska, P. Brodard, R. Widmer, Y. deHazan, T. Graule, J. Michler, and L. Philippe, 'Electrodeposition of Gold Thin Films with Controlled Morphologies and Their Applications in Electrocatalysis and SERS' Nanotechnology, 23, 255705 (2012). https://doi.org/10.1088/0957-4484/23/25/255705
  3. Y. Tian, H. Q. Liu, G. H. Zhao, and T. Tatsuma, 'Shape-Controlled Electrodeposition of Gold Nanostructures' J. Phys. Chem. B, 110, 23478 (2006). https://doi.org/10.1021/jp065292q
  4. H. Zhang, J. J. Xu, and H. Y. Chen, 'Shape-Controlled Gold Nanoarchitectures: Synthesis, Superhydrophobicity, and Electrocatalytic Properties' J. Phys. Chem. C, 112, 13886 (2008). https://doi.org/10.1021/jp802012h
  5. R. G. Freeman, K. C. Grabar, K. J. Allison, R. M. Bright, and et al., 'Self-Assembled Metal Colloid Monolayers: An Approach to SERS Substrates' Science, 267, 1629 (1995). https://doi.org/10.1126/science.267.5204.1629
  6. M. Lahav, T. Sehayek, A. Vaskevich, and I. Rubinstein, 'Nanoparticle Nanotubes' Angew. Chem. Int. Ed., 42, 5576 (2003). https://doi.org/10.1002/anie.200352216
  7. P. N. Bartlett, J. J. Baumberg, P. R. Birkin, M. A. Ghanem, and M. C. Netti, 'Highly Ordered Macroporous Gold and Platinum Films Formed by Electrochemical Deposition through Templates Assembled from Submicron Diameter Monodisperse Polystyrene Spheres' Chem. Mater., 14, 2199 (2002). https://doi.org/10.1021/cm011272j
  8. B. Seo, S. Choi, and J. Kim, 'Simple Electrochemical Deposition of Au Nanoplates from Au(I) Cyanide Complexes and Their Electrocatalytic Activities' ACS Appl. Mater. Interfaces, 3, 441 (2011). https://doi.org/10.1021/am101018g
  9. M. Hyun, S. Choi, Y. W. Lee, S. H. Kwon, S. W. Han, and J. Kim, 'Simple Electrodeposition of Dendritic Au Rods from Sulfite-Based Au(I) Electrolytes with High Electrocatalytic and SERS Activities' Electroanalysis, 23, 2030 (2011). https://doi.org/10.1002/elan.201000759
  10. Y. Xia, J. Liu, W. Huang, and Z. Li, 'Electrochemical Fabrication of Clean Dendritic Au Supported Pt Clusters for Electrocatalytic Oxidation of Formic Acid' Electrochim. Acta, 70, 304 (2012). https://doi.org/10.1016/j.electacta.2012.03.071
  11. C. Guo, Y. Xia, Y.-Z. Xu, J.-F. Zheng, and Z.-L. Li, 'Transformation of Randomly Aggregated Gold Nanoparticles into Dendritic Structures by Square Wave Potential Pulses' Mater. Lett., 65, 2326 (2011). https://doi.org/10.1016/j.matlet.2011.05.036
  12. H. J. Qiu and X. R. Huang, 'Effects of Pt Decoration on the Electrocatalytic Activity of Nanoporous Gold Electrode toward Glucose and Its Potential Application for Constructing a Nonenzymatic Glucose Sensor' J. Electroanal. Chem., 643, 39 (2010). https://doi.org/10.1016/j.jelechem.2010.03.011
  13. X. Xu, J. Jia, X. Yang, and S. Dong, 'A Templateless, Surfactantless, Simple Electrochemical Route to a Dendritic Gold Nanostructure and Its Application to Oxygen Reduction' Langmuir, 26, 7627 (2010). https://doi.org/10.1021/la904245q
  14. G. D. Christian, M. Chateau-Gosselin, and G. J. Patriarche, 'Electrogeneration of Gold(III) in Halide Media' Anal. Chim. Acta, 107, 83 (1979). https://doi.org/10.1016/S0003-2670(01)93198-8
  15. T. H. Lin, C. W. Lin, H. H. Liu, J. T. Sheu, and W. H. Hung, 'Potential-Controlled Electrodeposition of Gold Dendrites in the Presence of Cysteine' Chem. Commun., 47, 2044 (2011). https://doi.org/10.1039/c0cc03273e
  16. J.-J. Feng, A.-Q. Li, Z. Lei, and A.-J. Wang, 'Low- Potential Synthesis of "Clean" Au Nanodendrites and Their High Performance toward Ethanol Oxidation' ACS Appl. Mater. Interfaces, 4, 2570 (2012). https://doi.org/10.1021/am3002346
  17. S. Trasatti and O. A. Petrii, 'Real Surface-Area Measurements in Electrochemistry' Pure Appl. Chem., 63, 711 (1991).
  18. P. A. Kohl, 'Electrodeposition of Gold' M. Schlesinger and M. Paunovic, 115, John Wiley & Sons, New Jersy (2010).
  19. G. Schatz, M. Young, and R. Van Duyne, 'Electromagnetic Mechanism of SERS' K. Kneipp, M. Moskovits, and H. Kneipp, 103, 19, Springer Berlin Heidelberg, Evanston (2006).
  20. F. Hao, C. L. Nehl, J. H. Hafner, and P. Nordlander, 'Plasmon Resonances of a Gold Nanostar' Nano Lett., 7, 729 (2007). https://doi.org/10.1021/nl062969c

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