Silver-loaded delaminated hectorite nanoparticles for antibacterial materials

Silver nanoparticles are excellent antibacterial materials with wide application. However, it is extremely unstable associated with easy aggregation and colour changes. Although a great number of carriers have been developed for stable silver nanoparticles, it is never ending to broaden silver carri...

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Bibliographic Details
Published in:Micro & nano letters 2019-05, Vol.14 (5), p.531-533
Main Authors: Chen, Mingjie, Li, Ruimin, Shu, Xiulin, Li, Liangqiu, Xie, Xiaobao, Shi, Qingshan
Format: Article
Language:English
Subjects:
alternative silver carrier
antibacterial activity
antibacterial material
Antibacterial materials
bacterial cell wall
biomedical materials
cationic ionic change
E coli
energy‐dispersive X‐ray study
Escherichia coli
hectorite nanoparticles
microorganisms
nanocomposites
nanofabrication
nanomedicine
Nanoparticles
Photoelectrons
Scanning electron microscopy
Silver
silver carrier
silver‐loaded hectorite nanoparticle
stable silver nanoparticles
Staphylococcus aureus
surface coating
transmission electron microscopy
X-ray diffraction
X‐ray chemical analysis
X‐ray photoelectron spectra
X‐ray photoelectron spectroscopy
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Summary:Silver nanoparticles are excellent antibacterial materials with wide application. However, it is extremely unstable associated with easy aggregation and colour changes. Although a great number of carriers have been developed for stable silver nanoparticles, it is never ending to broaden silver carrier to meet varying applications. Herein, delaminated hectorite was developed as an alternative silver carrier. The structure of silver-loaded delaminated hectorite was confirmed by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy/energy-dispersive X-ray studies. Silver (8.69 wt%) was loaded onto the hectorite nanoparticles by cationic ionic change and surface coating. The silver-loaded hectorite showed fast bacterial killing ability (kill more than 94% Escherichia coli and 83% Staphylococcus aureus at 50 ppm within 1 h) by destroying bacterial cell wall.
ISSN:1750-0443
1750-0443
DOI:10.1049/mnl.2018.5017