Optimizing the Design and Synthesis of Supported Silver Nanoparticles for Low Cost Water Disinfection

2014 ◽  
Vol 48 (20) ◽  
pp. 12320-12326 ◽  
Author(s):  
Di He ◽  
Maritsa Kacopieros ◽  
Atsushi Ikeda-Ohno ◽  
T. David Waite
Keyword(s):  
Silver Nanoparticles ◽  
Low Cost ◽  
Water Disinfection ◽  
Design And Synthesis

scholarly journals Robust immobilization of anionic silver nanoparticles on cellulose filter paper toward a low-cost point-of-use water disinfection system with improved anti-biofouling properties

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 4873-4882
Author(s):  
Gongyan Liu ◽  
Ruiquan Yu ◽  
Jing Jiang ◽  
Zhuang Ding ◽  
Jing Ma ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Filter Paper ◽  
Low Cost ◽  
Water Disinfection ◽  
Point Of Use ◽  
Cellulose Filter

Point-of-use water disinfection by GA@AgNPs-LA-FP.

Size-controlled fabrication of silver nanoparticles using the Hedyotis puberula leaf extract: toxicity on mosquito vectors and impact on biological control agents

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 96573-96583 ◽  
Author(s):  
Raja Mohamed Sait Thameem Azarudeen ◽  
Marimuthu Govindarajan ◽  
Abubucker Amsath ◽  
Shine Kadaikunnan ◽  
Naiyf S. Alharbi ◽  
...  
Keyword(s):  
Biological Control ◽  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Low Cost ◽  
Aquatic Organisms ◽  
Capping Agent ◽  
Mosquito Vectors ◽  
Biological Control Agents ◽  
Size Controlled ◽  
Control Tool

As a low-cost and eco-friendly control tool, Ag nanoparticles were fabricated usingHedyotis puberulaaqueous extract as a reducing and capping agent and showed potent activity against malaria and arbovirus vectors with low biotoxicity against non-target aquatic organisms.

Antimicrobial and Antibiofilm Effects of Silver Nanoparticles Produced by Yarrowia lipolytica Against Vegetative and Starved Shigella

NANO ◽  
2021 ◽  
pp. 2150088
Author(s):  
Kalthoum Chourabi ◽  
Lobna Elleuch ◽  
Salma Kloula ◽  
Ahmed Landoulsi ◽  
Abdelwaheb Chatti
Keyword(s):  
Silver Nanoparticles ◽  
Yarrowia Lipolytica ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Water Disinfection ◽  
Personal Hygiene ◽  
Visible Range ◽  
Significant Toxicity ◽  
Air Disinfection ◽  
The Stability

Silver nanoparticles have attracted much interest from scientists to develop nanosilver-based disinfectant products due to their unique properties of high antimicrobial activity. This study focused on biosynthesis, characterization, antimicrobial and antibiofilm effects of silver nanoparticles against vegetative and starved Shigella strains. The silver nanoparticles were synthesized using the yeast Yarrowia lipolytica and characterized by ultraviolet–visible spectroscopy, X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The antimicrobial and antibiofilm activities of silver nanoparticles were tested against the growth of vegetative and starved Shigella strains. After the addition of silver nitrate solution to the supernatant of Y. lipolytica, we noticed the appearance of a brown-black coloration that suggested the formation of silver nanoparticles. The presence of silver nanoparticles was manifested by a maximum absorption in the ultraviolet–visible range, precisely at the wavelength 420[Formula: see text]nm. The crystalline nature and the stability of silver nanoparticles were confirmed, respectively, by XRD and FTIR analysis. The antibacterial activity of silver nanoparticles showed significant toxicity on Shigella strains indicating that the starved cells were more sensitive to treatment with silver nanoparticles than vegetative cells. Surprisingly, the biofilm formation had not been inhibited by silver nanoparticles for both vegetative and starved cells. In conclusion, a new class of nanosilver containing disinfectant nanoproducts will be promising for advanced environmental treatments including air disinfection, water disinfection, surface disinfection and personal hygiene that will help to prevent the further outbreak of diseases.

Immobilization of Silver Nanoparticles on Chitosan-Coated Silica-Gel-Beads and the Antibacterial Activity

2021 ◽  
Vol 892 ◽  
pp. 36-42
Author(s):  
Muhammad Iqbal Hidayat ◽  
Muhammad Adlim ◽  
Ilham Maulana ◽  
Muhammad Zulfajri
Keyword(s):  
Silver Nanoparticles ◽  
Silica Gel ◽  
Low Cost ◽  
Antibacterial Properties ◽  
Chitosan Film ◽  
Silver Ions ◽  
Filter Material ◽  
Silver Ion ◽  
Gel Beads ◽  
Metal Colloid

Silver nanoparticles (Ag0) have attracted the most attention due to their broad antimicrobial application and outstanding activity. The silver nanoparticles are usually in colloidal form, then immobilization the colloid onto solid support is still interesting to explore. In this work, a new method for silver colloidal nanoparticle immobilization on silica gel beads (SiG), which was then symbolized as Ag0-[chi-SiG] was conducted and characterized successfully. The finding proved that SiG must be coated with three chitosan film layers to give stable support for silver nanoparticles. This coating method caused the chitosan completely covered SiG, and the chitosan film provides coordination bonding for silver ions. The most appropriate solvent for silver ion impregnation on the surface of chi-SiG is methanol compared to other solvents. Tungsten lamp as the photo-irradiation, which is low cost and environmentally friendly has been proven effective for silver ion reduction, as shown by silver metal colloid UV-Vis surface plasmon resonance at 400-700 nm. Ag0-[chi-SiG] showed the antibacterial properties of inhibiting the growth Staphylococcus aureus and Escherichia coli; then it provides the potential application for antibacterial filter material. According to the weight comparison between antibacterial standard and Ag content, then Ag0-[chi-SiG] has two and five times higher of exhibiting zone for each bacteria.

High flux microfiltration membranes with silver nanoparticles for water disinfection

2015 ◽  
Vol 56 (13) ◽  
pp. 3590-3598 ◽  
Author(s):  
Aline Marques Ferreira ◽  
Érica Barbosa Roque ◽  
Fabiana Valéria da Fonseca ◽  
Cristiano Piacsek Borges
Keyword(s):  
Silver Nanoparticles ◽  
Water Disinfection ◽  
High Flux ◽  
Microfiltration Membranes

Hybrid Chitosan–Silver Nanoparticles Enzymatically Embedded on Cork Filter Material for Water Disinfection

2017 ◽  
Vol 56 (13) ◽  
pp. 3599-3606 ◽  
Author(s):  
Lina Vanesa Garcia Peña ◽  
Petya Petkova ◽  
Rosanna Margalef-Marti ◽  
Marc Vives ◽  
Lorena Aguilar ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Filter Material ◽  
Water Disinfection

Synthesis, characterization and application of green seaweed mediated silver nanoparticles (AgNPs) as antibacterial agents for water disinfection

2018 ◽  
Vol 78 (1) ◽  
pp. 235-246 ◽  
Author(s):  
D. Dixit ◽  
D. Gangadharan ◽  
K. M. Popat ◽  
C. R. K. Reddy ◽  
M. Trivedi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Inductively Coupled Plasma ◽  
Antibacterial Agents ◽  
Bacterial Count ◽  
Water Disinfection ◽  
Bacterial Strains ◽  
Vis Spectroscopy ◽  
Green Seaweed

Abstract A simple and eco-friendly method for the synthesis of hybrid bead silver nanoparticles (AgNPs) employing the aqueous extract derived from natural and renewable source namely tropical benthic green seaweed Ulva flexuosa was developed. This route involves the reduction of Ag+ ions anchored onto macro porous methacrylic acid copolymer beads to AgNPs for employing them as antibacterial agents for in vitro water disinfection. The seaweed extract itself acts as a reducing and stabilizing agent and requires no additional surfactant or capping agent for forming the AgNPs. The nanoparticles were analyzed using high-resolution transmission electron microscopy, UV–Vis spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray analysis and inductively coupled plasma optical emission spectroscopy. The study elucidates that such biologically synthesized AgNPs exhibit potential antibacterial activity against two Gram positive (Bacillus subtilis, Staphylococcus aureus) and two Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacterial strains tested. The bacterial count in treated water was reduced to zero for all the strains. Atomic force microscopy was performed to confirm the pre- and post-state of the bacteria with reference to their treatment with AgNPs. Attributes like facile environment-friendly procedure, stability and high antibacterial potency propel the consideration of these AgNPs as promising antibacterial entities.

Water Disinfection Using Novel Cyclodextrin Polyurethanes Containing Silver Nanoparticles Supported on Carbon Nanotubes

2009 ◽  
Vol 10 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Lungile P. Lukhele ◽  
Bhekie B. Mamba ◽  
Maggy NB Momba ◽  
Rui W.M. Krause
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
Water Disinfection

Nanocomposite cellulose fabrics with in situ generated silver nanoparticles by bioreduction method

2020 ◽  
pp. 152808372092473 ◽  
Author(s):  
Suchart Siengchin ◽  
Pawinee Boonyasopon ◽  
Vajja Sadanand ◽  
Anumakonda Varada Rajulu
Keyword(s):  
Silver Nanoparticles ◽  
Size Range ◽  
Low Cost ◽  
Aqueous Dispersion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Gram Positive Bacteria ◽  
Bed Materials ◽  
Cellulose Fabrics

In the present work, nanocomposite cellulose fabrics with in situ generated silver nanoparticles were prepared by bioreduction method employing aqueous dispersion of low-cost natural turmeric powder as a reducing agent and different concentrated aqueous AgNO3 as source solutions. The prepared nanocomposite cellulose fabrics were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and antibacterial tests. The nanocomposite cellulose fabrics had roughly spherical silver nanoparticles in the size range of 41–130 nm with an overall average of 78 nm. The X-ray analysis indicated the generation of both silver nanoparticles and Ag2O nanoparticles in the nanocomposite cellulose fabrics. The nanocomposite cellulose fabrics retained the generated AgNPs even after repeated detergent washings. The prepared nanocomposite cellulose fabrics exhibited excellent antibacterial activity against both the Gram-negative and Gram-positive bacteria and hence can be considered as antibacterial hospital-bed materials, apparels, etc.

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