Synthesis of silver nanoparticles using agar-agar water solution and femtosecond pulse laser irradiation

Synthesis of silver nanoparticles using agar-agar water solution and femtosecond pulse laser irradiation

Autor Matos, Ricardo Almeida de Autor UNIFESP Google Scholar
Cordeiro, Thiago da Silva Google Scholar
Samad, Ricardo Elgul Google Scholar
Sicchieri, Leticia Bonfante Google Scholar
Vieira Junior, Nilson Dias Google Scholar
Courrol, Lilia Coronato Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
IPEN CNEN SP
Resumo We report a method to synthetize silver nanoparticles using an agar-agar solution illuminated by light from a xenon lamp, followed by irradiation by ultrashort laser pulses. Spherical nanoparticles of similar to 100 nm were created by the xenon lamp illumination, and after the ultrashort pulses irradiation their sizes were reduced to under 10 nm. Bideionized water was used as solvent and surfactants or reducing agents were substituted by agar-agar and light, characterizing the process as a green synthesis, a completely inoffensive procedure for the environment. the xenon light was used to reduce silver ions (Ag+) into metallic silver (Ag-0), and the laser irradiation was important to decrease the nanoparticles diameter. the average particles size, size distribution, morphology, and structure were determined by dynamic light scattering (DLS), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and UV/visible absorption spectrophotometry. (C) 2013 Elsevier B.V. All rights reserved.
Palavra-chave Silver nanoparticles
Green synthesis
Laser ablation
Femtoseconds
Photolysis
Idioma Inglês
Financiador Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Data de publicação 2013-04-20
Publicado em Colloids and Surfaces A-physicochemical and Engineering Aspects. Amsterdam: Elsevier B.V., v. 423, p. 58-62, 2013.
ISSN 0927-7757 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 58-62
Fonte http://dx.doi.org/10.1016/j.colsurfa.2013.01.061
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000316831200008
Endereço permanente http://repositorio.unifesp.br/handle/11600/36215

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