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Silver, gold and the corresponding core shell nanoparticles: synthesis and characterization

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Abstract

Simple strategies for producing silver and gold nanoparticles (AgNP and AuNP) along with the corresponding core shell nanoparticles (Au–Ag and Ag–Au) by reduction of the metal salts AgBF4 and HAuCl4 by NaBH4 in water will be presented. The morphologies of the obtained nanoparticles are determined by the order of addition of reactants. The obtained NPs, with sizes in the range 3–40 nm, are characterized by transmission electronic microscopy (TEM) and UV–Vis absorption spectroscopy, so as to evaluate their qualities. Moreover, a direct electrochemical detection protocol based on a cyclic voltammetry in water solution that involves the use of glassy carbon electrode is also applied to characterize the prepared NPs. The developed NPs and the related electroanalytical method seem to be with interest for future sensing and biosensing applications including DNA sensors and immunosensors.

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Acknowledgments

This work is supported by Projects: MAT2005-03553 and Consolider-Ingenio 2010, Project CSD2006-00012. CTQ2007-63913

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Authors and Affiliations

  1. Unitat de Química Inorgànica, Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Catalonia, Spain

    Fraser Douglas, Ramon Yañez & Josep Ros

  2. Nanobioelectronics & Biosensors Group, Institut Català de Nanotecnologia, Bellaterra, Catalonia, Spain

    Sergio Marín, Alfredo de la Escosura-Muñiz & Arben Merkoçi

  3. Group of Sensors & Biosensors, Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Catalonia, Spain

    Sergio Marín, Salvador Alegret & Arben Merkoçi

Authors
  1. Fraser Douglas
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  2. Ramon Yañez
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  3. Josep Ros
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  4. Sergio Marín
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  5. Alfredo de la Escosura-Muñiz
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  6. Salvador Alegret
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  7. Arben Merkoçi
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Corresponding author

Correspondence to Arben Merkoçi.

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The author Fraser Douglas is on leave from: Chemistry Department, University of Glasgow, Glasgow G12 8QQ, UK.

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Douglas, F., Yañez, R., Ros, J. et al. Silver, gold and the corresponding core shell nanoparticles: synthesis and characterization. J Nanopart Res 10 (Suppl 1), 97–106 (2008). https://doi.org/10.1007/s11051-008-9374-3

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  • DOI: https://doi.org/10.1007/s11051-008-9374-3

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