Environmental Engineering Reference
In-Depth Information
h rough the UV-Vis and electron microscopy data, it was verii ed that the
inclusion of silver nanoparticles in cotton i bers improved their thermal
stability and elongation properties. h e developed silver nanoparticles-
loaded cotton i bers were highly active against gram-negative
E. coli.
h e
author further suggested that such kinds of i bers have great potential
for utilization in hospitals and healthcare applications. In an interesting
experiment, Hebeish
et al.
[131] synthesized silver nanoparticles (6-8 nm)
by employing the reducing and stabilizing power of hydroxypropyl starch
(HPS). h ey reported that the deposition of nanosilver on the surface of
cotton fabrics in the presence and absence of binder had been an ef ective
way to prevent microbial contaminations. It was observed that through
the use of binder, the antibacterial activity of the treated fabrics against
Escherichia coli
(gram -ve) and
Staphylococcus aureus
(gram +ve) bacteria
was maintained even at er 20 washings in home laundering. Shastri and
colleagues [128] also reported the production of silver nanoparticles using
the wet reduction method and biologically by using leaf extract of neem
(
Azadirachta indica
) plant. Formation of silver nanoparticles of various
shapes and sizes (5-50 nm) were revealed by UV-Visible spectroscopy and
transmission electron microscopy. h e authors of this study investigated
the antibacterial ei cacy of the nanosilver-i nished fabrics (nylon and cot-
ton sock fabrics) against a wide range of organisms such as
Sarcina lutea
,
an odor-producing organism,
Klebsiella pnuemoniae
,
Pseudomonas aeru-
ginosa
, methicillin-resistant
Staphylococcus aureus
and
Candida albicans,
causing foot infections, by employing a zone inhibition test, antibacterial
test and wash fastness test.
10.5
Concluding Remarks and Future Aspects
Synthesis of green chemistry-based transition metal nanoparticles using
inexpensive and ei cient plant materials is a new and emerging area of
research in the scientii c world. h e intent of this chapter was to provide a
concise insight into the recent developmental works pertaining to transi-
tion metal nanoparticle synthesis by using plant material. h e synthesis
of nanoparticles is characterized by processes that result in the produc-
tion of stable nanoparticles of more various shapes and sizes. Such kinds
of nanoparticles have numerous applications and have created new inter-
esting i elds in all the sciences. h eir applications have already led to the
development of novel textile properties. Existing studies are coni ned
mostly to their use in antimicrobial textiles and little information is avail-
able about their role in other important applications such as self-cleaning
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