v. 34 n. 2 (2021): Revista ION
Artigos

Biossíntese de nanopartículas de prata com Chlorella sp.

Alberto Ricardo Albis Arrieta
Universidad del Atlántico
Fredy Andrés Gonzalez Ortiz
Universidad del Atlántico
Daniel Torrenegra Escorcia
Universidad del Atlántico

Publicado 2021-07-27

Palavras-chave

  • Química Verde,
  • Nanopartículas de Prata,
  • Biossíntese,
  • Microalga

Como Citar

Albis Arrieta, A. R., Gonzalez Ortiz, F. A., & Torrenegra Escorcia, D. (2021). Biossíntese de nanopartículas de prata com Chlorella sp. REVISTA ION, 34(2), 7–15. https://doi.org/10.18273/revion.v34n2-2021001

Resumo

Neste trabalho, mostramos os resultados da biossíntese de nanopartículas de prata utilizando a microalga Chlorella sp. cultivada em diversos meios contendo concentrações de glicerol que variam entre 5% e 20%, e condições variáveis de luz e temperatura. A síntese de nanopartículas foi realizada utilizando sobrenadantes e pelotas de culturas de microalgas autotróficas, heterotróficas e mixotróficas. A presença de nanopartículas de prata foi verificada por espectroscopia ultravioleta - visível, e as amostras que apresentam as maiores concentrações de nanopartículas foram caracterizadas por microscopia eletrônica de varredura. As condições mixotróficas melhoraram a excreção de exo-polímeros que melhoraram a redução de prata e a síntese de nanopartículas. As nanopartículas obtidas mostraram forma elipsoidal com dimensões de 108 nm x 156 nm e 87 nm x 123 nm para síntese realizada com sobrenadantes de culturas mixotróficas com glicerol 5% e 10%, respectivamente.

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