Abstract
In the present study, poly(vinylpyrrolidone) (PVP) served as reducing and capping agents for the synthesis of gold nanoparticles (AuNPs) in alkaline medium. The PVP-AuNPs were then combined with carbon nanotubes (CNTs) to assemble thin films onto ITO via the layer-by-layer (LbL) technique. The PVP-AuNPs/CNTs LbL films were analyzed with UV–Vis spectroscopy and atomic force microscopy (AFM). The latter technique revealed that the PVP-AuNPs/CNTs LbL films took over the entire ITO surface homogeneously, which positively impacted the magnitude of the anodic currents for glycerol electro-oxidation. Such results indicated that the combination PVP-AuNPs with CNTs in an adequate LbL fashion nanostructure may be feasible for applications in various fields such as catalysis, fuel cells, and sensing.
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Acknowledgements
The authors are grateful to CNPq (Grants 477668/2013-5 and 442087/2014-4), FAPEMIG (Grant APQ-01763-13), and Rede Mineira de Química (FAPEMIG—CEX-RED-00010-14) for the financial support. Furthermore, the authors gratefully thank Prof. Noelio O. Dantas (UFU, Brazil) for the facilities with the AFM measurements, and Prof. Waldir Avansi Jr. (UFSCar, Brazil) for the TEM images performed at LME/LNNano/CNPEM.
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Siqueira, J.R., Gabriel, R.C. & Gasparotto, L.H.S. Layer-by-layer assembly of poly(vinylpyrrolidone)-embedded gold nanoparticles with carbon nanotubes for glycerol electro-oxidation. J Mater Sci 51, 8323–8330 (2016). https://doi.org/10.1007/s10853-016-0061-y
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DOI: https://doi.org/10.1007/s10853-016-0061-y