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New organometallic salts as precursors for the functionalization of carbon nanotubes with metallic nanoparticles

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Abstract

New organometallic salts were synthesized in aqueous solution and were used as precursors for the functionalization of carbon nanotubes (CNT) by metallic nanoparticles. The precursors were obtained by reaction between HAuCl4, (NH4)2PtCl6, (NH4)2PdCl6, or (NH4)3RhCl6 with cetyltrimethylammonium bromide (CTAB). The as-obtained (CTA) n Me x Cl y salts (with Me = Au, Pt, Pd, Rh) were characterized by Fourier-transform infra-red (FTIR) spectroscopy, 1H nuclear magnetic resonance (NMR) spectroscopy, and thermogravimetric analysis. These precursors were then used to synthesize metallic nanoparticles of Au, Pt, Pd, and Rh over multiwalled carbon nanotubes (MWCNT). Characterization by scanning transmission electron microscopy (STEM) and thermogravimetric analysis under air reveals that the CNT-supported catalysts exhibit high loading and good dispersion of the metallic nanoparticles with small average particle sizes. The present preparation procedure therefore allows obtaining high densities of small metallic nanoparticles at the surface of MWCNT.

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Acknowledgments

We gratefully acknowledge for their technical support R. A. Villegas, C. Ornelas, D. Lardizabal, and W. Antúnez from Laboratorio Nacional de Nanotecnologia at CIMAV-Chihuahua, I. Gradilla from CNyN, PAPIIT Project IN102509, Red de Nanociencias y Nanotecnologia-Conacyt as well as A. Vega-Rios from the CGI at IT-Tijuana.

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Authors and Affiliations

  1. Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, KM 107 Carretera Tijuana-Ensenada, C.P. 22860, Ensenada, BC, México

    G. Alonso-Núñez, L. Morales de la Garza, E. Rogel-Hernández & E. Reynoso

  2. Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Av. Tecnológico, 14418, C.P. 22390, Mesa de Otay, Tijuana, BC, México

    E. Rogel-Hernández

  3. Instituto Tecnológico de Tijuana, Centro de Graduados e Investigación, A.P. 1166, C.P. 22000, Tijuana, BC, México

    A. Licea-Claverie & R. M. Felix-Navarro

  4. Institut de Recherches sur la Catalyse et l’Environnement de Lyon, UMR 5256 CNRS—Université de Lyon, 2 Avenue Albert Einstein, 69100, Villeurbanne, France

    G. Berhault

  5. Centro de Investigación en Materiales Avanzados S. C., C.P. 31109, Chihuahua, Chih, México

    F. Paraguay-Delgado

Authors
  1. G. Alonso-Núñez
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  2. L. Morales de la Garza
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  3. E. Rogel-Hernández
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  4. E. Reynoso
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  5. A. Licea-Claverie
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  6. R. M. Felix-Navarro
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  7. G. Berhault
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  8. F. Paraguay-Delgado
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Correspondence to G. Alonso-Núñez.

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Alonso-Núñez, G., de la Garza, L.M., Rogel-Hernández, E. et al. New organometallic salts as precursors for the functionalization of carbon nanotubes with metallic nanoparticles. J Nanopart Res 13, 3643–3656 (2011). https://doi.org/10.1007/s11051-011-0283-5

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  • DOI: https://doi.org/10.1007/s11051-011-0283-5

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