SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION

SUMMARY One of the applications of chitosan is based on its ability to stabilized metallic nanoparticles with minimum chitosan metal molar ratio. This work describes the synthesis and characterization of Ag, Au, Pt, and Cu nanoparticles stabilized by chitosan through chemical reduction of metallic s...

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Autores principales:	LEÓN,YASNA, CÁRDENAS,GALO, ARIAS,MAURICIO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2017
Materias:	Nanoparticles Chitosan TEM
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403760
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spelling	oai:scielo:S0717-970720170004037602018-04-02SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTIONLEÓN,YASNACÁRDENAS,GALOARIAS,MAURICIO Nanoparticles Chitosan TEM SUMMARY One of the applications of chitosan is based on its ability to stabilized metallic nanoparticles with minimum chitosan metal molar ratio. This work describes the synthesis and characterization of Ag, Au, Pt, and Cu nanoparticles stabilized by chitosan through chemical reduction of metallic salts by sodium borohydride (NaBH4). The properties of bionanocomposites were studied in terms of their surface plasmon resonance, crystalline structure, average diameter size, particle distributions and functional groups. The samples were characterized by TEM, electron diffraction, UV-Visible and FTIR. The stability of the colloids at room temperature were also measured. A high stability for the colloidal dispersion with chitosan can be observed (> three months). We found that TEM studies show a size distribution between 6 and 10 nm, depending on metals and chitosan metal relation. Electron diffraction analysis for the metallic nanoparticles shows the presence of Ag, Au, Pt and Cu. The FT-IR exhibit the presence of the chitosan in the stabilisation of metallic nanoparticles.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.62 n.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403760en10.4067/s0717-9707017000403760
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nanoparticles Chitosan TEM
spellingShingle	Nanoparticles Chitosan TEM LEÓN,YASNA CÁRDENAS,GALO ARIAS,MAURICIO SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
description	SUMMARY One of the applications of chitosan is based on its ability to stabilized metallic nanoparticles with minimum chitosan metal molar ratio. This work describes the synthesis and characterization of Ag, Au, Pt, and Cu nanoparticles stabilized by chitosan through chemical reduction of metallic salts by sodium borohydride (NaBH4). The properties of bionanocomposites were studied in terms of their surface plasmon resonance, crystalline structure, average diameter size, particle distributions and functional groups. The samples were characterized by TEM, electron diffraction, UV-Visible and FTIR. The stability of the colloids at room temperature were also measured. A high stability for the colloidal dispersion with chitosan can be observed (> three months). We found that TEM studies show a size distribution between 6 and 10 nm, depending on metals and chitosan metal relation. Electron diffraction analysis for the metallic nanoparticles shows the presence of Ag, Au, Pt and Cu. The FT-IR exhibit the presence of the chitosan in the stabilisation of metallic nanoparticles.
author	LEÓN,YASNA CÁRDENAS,GALO ARIAS,MAURICIO
author_facet	LEÓN,YASNA CÁRDENAS,GALO ARIAS,MAURICIO
author_sort	LEÓN,YASNA
title	SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
title_short	SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
title_full	SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
title_fullStr	SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
title_full_unstemmed	SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION
title_sort	synthesis and characterizations of metallic nanoparticles in chitosan by chemical reduction
publisher	Sociedad Chilena de Química
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072017000403760
work_keys_str_mv	AT leonyasna synthesisandcharacterizationsofmetallicnanoparticlesinchitosanbychemicalreduction AT cardenasgalo synthesisandcharacterizationsofmetallicnanoparticlesinchitosanbychemicalreduction AT ariasmauricio synthesisandcharacterizationsofmetallicnanoparticlesinchitosanbychemicalreduction
_version_	1714200919527129088

SYNTHESIS AND CHARACTERIZATIONS OF METALLIC NANOPARTICLES IN CHITOSAN BY CHEMICAL REDUCTION

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