Green synthesis and characterization of silver nanoparticles using ascomycota fungi Penicillium nalgiovense AJ12
PBN-AR
Instytucja
Wydział Chemiczny (Politechnika Wrocławska)
Informacje podstawowe
Główny język publikacji
eng
Czasopismo
JOURNAL OF CLUSTER SCIENCE
ISSN
1040-7278
EISSN
Wydawca
DOI
URL
Rok publikacji
2014
Numer zeszytu
nr 4
Strony od-do
989-1004
Numer tomu
vol. 25
Identyfikator DOI
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Słowa kluczowe
pol
koloid
biosynteza
właściwości
stabilizacja
Streszczenia
Język
eng
Treść
A new method for green synthesis of silver nanoparticles using the cell-free filtrate of Penicillium nalgiovense AJ12 as reducing and protecting agent was described. The pathway is based on the reduction of Ag1+ by protein(s). Various techniques such as UV–Vis spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier transform infrared and Zeta potential measurements were used to characterize the silver nanoparticle obtained. The results revealed synthesis of the spherical silver nanoparticles coated with protein(s). The average size of the particles obtained from TEM was 15.2 ± 2.6 nm. DLS measurements showed that the particle size was higher than that estimated from TEM measurements and was 25.2 ± 2.8 nm. Studies on the role of the cell-free filtrate proteins in the synthesis of silver nanoparticles indicated that the process is non-enzymatic but involves amino acids interactions with silver ions. It was found that the aqueous silver nanoparticles suspensions exhibited excellent stability over a wide range of ionic strength, pH and temperature.
Inne
System-identifier
000194208
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