Silver Nanocoatings at Large Length Scales: Influence of the AgNPs
Morphology and Capping Agents on the Coating Chemical Stability and
Antimicrobial Effect
We assessed at multiple length scales (nanometers to millimeters) the
nanocoatings of silver nanoparticles (AgNPs) on model SiO2/Si
substrates. The coatings from biogenic AgNPs (from yeasts Rhodotorula
glutinis and Rhodotorula mucilaginosa) were compared to those formed
from ``synthetic'' AgNPs capped with citrate and sodium dodecyl
sulfate (SDS). With computational analysis of large-field (LF) X-ray
images of the whole substrates (5 x 5 mm), we were able to assess the
coatings homogeneity, relative amount of AgNPs, and their distribution
as agglomerates. Surprisingly, by analyzing more than 100,000 elements
(nanoparticles and agglomerates) in each sample, it was observed that
the mentioned features have little dependence on the AgNPs morphology
and capping agents. All silver nanocoatings resisted when immersed in
phosphate-buffered saline medium by forming agglomerates of up to 10 mu
m(2). However, coatings formed with synthetic AgNPs (capped with citrate
and SDS) led to a higher antimicrobial efficiency against Staphylococcus
aureus.
%0 Journal Article
%1 WOS:000406806200006
%A Sousa, Francisco A
%A Noronha, Victor T
%A Machado, Terezinha F
%A Silveira, Jose V
%A Cunha, Francisco A
%A Fechine, Pierre B A
%A Paula, Amauri J
%C CAIXA POSTAL 26037, 05599-970 SAO PAULO, BRAZIL
%D 2017
%I SOC BRASILEIRA QUIMICA
%J JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
%K X-ray confocal electron image imaging} large-field laser microscopy; processing; scanning {nanobiotechnology;
%N 9
%P 1639-1649
%R 10.21577/0103-5053.20160310
%T Silver Nanocoatings at Large Length Scales: Influence of the AgNPs
Morphology and Capping Agents on the Coating Chemical Stability and
Antimicrobial Effect
%V 28
%X We assessed at multiple length scales (nanometers to millimeters) the
nanocoatings of silver nanoparticles (AgNPs) on model SiO2/Si
substrates. The coatings from biogenic AgNPs (from yeasts Rhodotorula
glutinis and Rhodotorula mucilaginosa) were compared to those formed
from ``synthetic'' AgNPs capped with citrate and sodium dodecyl
sulfate (SDS). With computational analysis of large-field (LF) X-ray
images of the whole substrates (5 x 5 mm), we were able to assess the
coatings homogeneity, relative amount of AgNPs, and their distribution
as agglomerates. Surprisingly, by analyzing more than 100,000 elements
(nanoparticles and agglomerates) in each sample, it was observed that
the mentioned features have little dependence on the AgNPs morphology
and capping agents. All silver nanocoatings resisted when immersed in
phosphate-buffered saline medium by forming agglomerates of up to 10 mu
m(2). However, coatings formed with synthetic AgNPs (capped with citrate
and SDS) led to a higher antimicrobial efficiency against Staphylococcus
aureus.
@article{WOS:000406806200006,
abstract = {We assessed at multiple length scales (nanometers to millimeters) the
nanocoatings of silver nanoparticles (AgNPs) on model SiO2/Si
substrates. The coatings from biogenic AgNPs (from yeasts Rhodotorula
glutinis and Rhodotorula mucilaginosa) were compared to those formed
from ``synthetic'' AgNPs capped with citrate and sodium dodecyl
sulfate (SDS). With computational analysis of large-field (LF) X-ray
images of the whole substrates (5 x 5 mm), we were able to assess the
coatings homogeneity, relative amount of AgNPs, and their distribution
as agglomerates. Surprisingly, by analyzing more than 100,000 elements
(nanoparticles and agglomerates) in each sample, it was observed that
the mentioned features have little dependence on the AgNPs morphology
and capping agents. All silver nanocoatings resisted when immersed in
phosphate-buffered saline medium by forming agglomerates of up to 10 mu
m(2). However, coatings formed with synthetic AgNPs (capped with citrate
and SDS) led to a higher antimicrobial efficiency against Staphylococcus
aureus.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {CAIXA POSTAL 26037, 05599-970 SAO PAULO, BRAZIL},
author = {Sousa, Francisco A and Noronha, Victor T and Machado, Terezinha F and Silveira, Jose V and Cunha, Francisco A and Fechine, Pierre B A and Paula, Amauri J},
biburl = {https://www.bibsonomy.org/bibtex/23d105535935797abdba3809b176bf811/ppgfis_ufc_br},
doi = {10.21577/0103-5053.20160310},
interhash = {717e6bc22fffbf466604e0a4fc5651a2},
intrahash = {3d105535935797abdba3809b176bf811},
issn = {0103-5053},
journal = {JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY},
keywords = {X-ray confocal electron image imaging} large-field laser microscopy; processing; scanning {nanobiotechnology;},
number = 9,
pages = {1639-1649},
publisher = {SOC BRASILEIRA QUIMICA},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {Silver Nanocoatings at Large Length Scales: Influence of the AgNPs
Morphology and Capping Agents on the Coating Chemical Stability and
Antimicrobial Effect},
tppubtype = {article},
volume = 28,
year = 2017
}