Simultaneous removals of VOCs and bioaerosol by oxidation and antibacterial activities using nano-silver composites

Supported nano-silver composites, famous for large specific surface area, good dispersibility and high catalytic activity, have been widely used in chemistry and chemical engineering, biomedicine and new materials. In this paper, we report recent research progress on supported nano-silver composites as reviewed from preparation techniques (chemical reduction, physical reduction and in-situ formation), types of supporters (organic and inorganic) and anti-microbial/catalytic activity. Firstly, the principles and merits/demerits of three preparation techniques for silver nanoparticles are elaborated. Afterwards, preparation, structures and properties of supported nano-silver composites are summarized through different types of supporters, as well as their applications in catalytic reaction, pollutant control and antimicrobial. Furthermore, it has been demonstrated that silver nanoparticles produced by in-situ formation are more stable and well-distributed, readily meeting the demands for practical applications. Finally, superior supporters for nano-silver composites should be of high specific surface area and good stability, non-expensive, environmentally friendly and low-toxicity.

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The Use of Innovative Nano emulsions and Nano-Silver Composites Packaging for anti-bacterial properties: An article review

Iranian Journal of Aquatic Animal Health ◽

10.18869/acadpub.ijaah.3.1.61 ◽

2017 ◽

Vol 3 (1) ◽

pp. 61-73 ◽

Cited By ~ 2

Author(s):

H Ahari ◽

Keyword(s):

Nano Silver ◽

Silver Composites

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An Improved Halo Method for Evaluating the Antibacterial Activity of Leather

Leather and Footwear Journal ◽

10.24264/lfj.20.3.2 ◽

2020 ◽

Vol 20 (3) ◽

pp. 229-236

Author(s):

Jinwei Zhang ◽

Qiuyue Tang ◽

Wuyong Chen ◽

Hongbin Sun ◽

Qiming Ou ◽

...

Keyword(s):

Antibacterial Activity ◽

Intraclass Correlation ◽

Antibacterial Activities ◽

New Method ◽

Culture Dish ◽

Nano Silver ◽

Testing Method ◽

Sterile Medium ◽

The Difference ◽

Better Than

In order to evaluate leather antibacterial activity rapidly and accurately, an improved halo method was developed based on conventional halo method and the agar diffusion plate method. During the new method, there were two layers of medium, the bottom was sterile medium and the top was medium containing microbes; more than one leather sample could be tested in a culture dish. The antibacterial activities of leather treated by nano-silver, nano-ZnO and butyl paraben against Escherichia coli, Staphylococcus aureus, Aspergillus niger and Rhodotorula mucilaginosa were tested by the new method. The results indicated intraclass correlation coefficient values were greater than 0.7 but the P values were less than 0.05 during improved halo method testing, thus, the repeatability and reliability was comparable or even better than conventional method. Nano-silver showed excellent and broad antibacterial activity and the difference between each antibacterial agent could be observed clearly and intuitively during improved halo method testing. In sum, improved halo method was a fast, accurate, qualitative and quantitative testing method and would be a new choice for evaluating leather antibacterial activity.

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Synthesis and Anti/Bacteriostasis of Nano-Silver Composites Based Modified Chitosan

Material Sciences ◽

10.12677/ms.2018.84029 ◽

2018 ◽

Vol 08 (04) ◽

pp. 265-272

Author(s):

波蔡

Keyword(s):

Nano Silver ◽

Modified Chitosan ◽

Silver Composites

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The Structure and Properties of Nano Silver Antibacterial Polyester Fabrics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.332-334.860 ◽

2011 ◽

Vol 332-334 ◽

pp. 860-864 ◽

Cited By ~ 1

Author(s):

Ting Ting Zhou ◽

Hong Lin ◽

Yu Yue Chen

Keyword(s):

Hyperbranched Polymer ◽

Antibacterial Activities ◽

Structure And Properties ◽

Silver Particles ◽

Polyester Fabrics ◽

Nano Silver ◽

Eds Analysis ◽

Washing Durability ◽

Finishing Process ◽

Ft Ir

The homemade amino-terminated hyperbranched polymer (HBP-NH2) was applied as a reducing agent to prepare nano silver. A suitable finishing process was proposed to treat polyester fabrics with nano silver solutions. The distribution and morphology of nano silver on the surface of polyester fiber were observed by SEM. EDS analysis was carried out to investigate element contents of the treated polyester fabrics. The FT-IR spectra, physical mechanical properties and antibacterial activities of nano silver antibacterial polyester fabrics had been tested and compared with common polyester fabrics. The results showed that nano silver particles dispersed uniformly on the surface of the fiber. The treated polyester fabrics attained excellent antibacterial activity and washing durability. The nano silver antibacterial polyester fabrics had an expansive application prospect.

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Toxicity and application of nano-silver in multi-drug resistant therapy

Letters in Applied NanoBioScience ◽

10.33263/lianbs91.824829 ◽

2020 ◽

Vol 9 (1) ◽

pp. 824-829

Keyword(s):

Silver Nanoparticles ◽

Pathogenic Bacteria ◽

Antibacterial Activities ◽

Multidrug Resistant ◽

Resistant Bacteria ◽

Drug Resistant ◽

Continuous Increase ◽

Nano Silver ◽

Drug Resistant Bacteria ◽

Global Issue

Nano-silver toxicity is a major challenge in the field of nanotechnology and nanoscience. Silver nanoparticles have antibacterial activity against gram-negative and gram-positive bacteria. The level of nanotoxicity varies according to the size, shape, surface charge and cellular uptake. The size of nanoparticles influences their interaction and reactivity with cell membranes. Silver nanoparticles were investigated for the broad-spectrum antibacterial activities, especially against antibiotic-resistant bacteria. In the present scenario, pharmaceutical and biomedical sectors are facing the challenges of the continuous increase in multidrug-resistant human pathogenic microbes. The development of multidrug resistance has become a global issue with serious consequences in the management of infectious diseases caused by pathogenic bacteria. For the multi-drug resistant therapy, various combinations of antibiotics were used with silver nanoparticles. This review discusses the nanotoxicity and bactericidal potential of silver nanoparticles against the multi-drug resistant bacteria.

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