Título: | SYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES AND SERS RESPONSE OF ETHYLENEDIAMINETETRAACETIC ACID AND ITS CHROMIUM(III) COMPLEX ADSORVED ON THEIR SURFACE | ||||||||||||||||||||||||||||||||||||
Autor: |
THAMIRES IDALINO DA SILVA |
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Colaborador(es): |
NICOLAS ADRIAN REY - Orientador TOMMASO DEL ROSSO - Coorientador |
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Catalogação: | 12/AGO/2015 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=25035&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=25035&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.25035 | ||||||||||||||||||||||||||||||||||||
Resumo: | |||||||||||||||||||||||||||||||||||||
Nowadays, the nanoparticles have been target of searches in several in
various areas due its magnetic, photonic, optoelectronic and catalytic exclusive
proprieties. The present work aimed to study the SERS response and the
possible interaction between the gold nanoparticles and ethylenediamninetatraacetic acid and its chromium (III) complex. This complex was synthesized and characterized by elemental analyses ( atomic absorption
spectrometry and CHN ), infrared spectroscopy, Raman spectroscopy and
Ultraviolet-visible spectroscopy techniques. It was possible to see that, in this
case, the ligand EDTA coordenates as a quinquidentate with the chromium íon,
and one water molecule occupied the sixty valence position. In this paper was
synthesized also a aqueous colloidal solution of gold nanoparticle by the physic
method pulsed laser ablation. This method is very interesting because allow the
formation of the particles without the action of another reagent, utilizing just
gold and quarter. After that, its was characterized by ultraviolet-visible
spectroscopy, SERS, SEM and TEM. The dates showed that the particles had
relatively small diameters, near 10 to 30 nm and there was the presence of
carbon monoxide molecules adsorbed in its surfaces, possibility from CO2
present in the air that is so much soluble in water and in some stage of ablation
was reduced. In order that study and present the sensibility of the SERS
techniques, solutions of EDTA and synthesized complex was prepared in such a
manner as when its added inside the colloidal solutions its final concentration
was 10(-5) mol / L. In order to analyzed by SERS, these mixtures was deposited in
a glass plate that before was covered by a aluminum layer so as to extinct some
interference from glass fluorescence. The SERS bands got was studied and we
believe that the interaction occurred in the nanoparticles surface with a both
ligand and complex was by hydrogen bond.
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