Preparation and Characterization of Chitosan/Silver Nano-composite and its Application on Nile Water as Antibacterial Materials

MRS Advances ◽  
2020 ◽  
Vol 5 (26) ◽  
pp. 1331-1338
Author(s):  
Heba Elfaig ◽  
Wala Elsayed ◽  
Hasabo Ahmed
Keyword(s):  
Silver Nanoparticles ◽  
Chitosan Nanoparticles ◽  
Water Disinfection ◽  
Coliform Bacteria ◽  
Sem Images ◽  
Nano Composite ◽  
Complete Inactivation ◽  
Nile Water ◽  
Antibacterial Material

Abstract:The prepared silver/chitosan nanocomposite and chitosan nanoparticles in this study may demonstrate the potential in optimizing the minimum amount required to achieve complete inactivation of various Coliform bacteria in Nile water. Chitosan nanoparticles were prepared based on the ionic gelation of the prepared chitosan and silver nanoparticles were reduced by Solenostemma Argel extract. Finally, chitosan silver-loaded nanoparticles were prepared by dispersing silver nanoparticles onto the chitosan nanoparticles. The SEM images exhibited a diameter range of 10 nm–30 nm for both of the fabricated silver nanoparticles and chitosan nanoparticles. The UV-Vis analysis confirmed the formation of Ag nanoparticles by the appearance of the characteristic peak at 410 nm. The antibacterial activity of chitosan nanoparticles and silver-loaded nanoparticles was evaluated against the Coliform bacteria. Results show an improvement in the inhibition of the growth of various bacteria tested when silver nanoparticles were introduced which was (0.03g/100ml). Consequently, chitosan silver-loaded nanoparticles could be recommended as an efficient antibacterial material for water disinfection.

SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES EMBEDDED IN EMULSIFIED ISOBUTYL ACRYLATE

2013 ◽  
Vol 12 (05) ◽  
pp. 1350041
Author(s):  
C. DENNIS ◽  
S. VIDHYA ◽  
K. SHADAK ALEE ◽  
D. NARAYANA RAO
Keyword(s):  
Silver Nanoparticles ◽  
Synthesis And Characterization ◽  
Spherical Nanoparticles ◽  
Colloidal Solutions ◽  
Sem Images ◽  
Atomic Force ◽  
Infrared Spectrophotometer ◽  
Laser Ablation Technique ◽  
Scanning Electron

Silver nanoparticles were generated using laser ablation technique in emulsified isobutyl acrylate solution in which the nanoparticles are stabilized and embedded over the acrylic polymerized solution. Further, the colloidal solutions were characterized with atomic force microscope (AFM), scanning electron microscope (SEM) and Fourier transform infrared spectrophotometer (FTIR). AFM image results of the nanoparticles displays the silver nanoparticles embedded over the emulsified acrylic layer and dispersion of spherical nanoparticles across the polymer were eruptions of silver nanoparticles can be seen clearly. In addition, FTIR spectrum and SEM images validate the nanoparticle reaction over the polymerized acrylate solution and size of the metal nanoparticles respectively.

scholarly journals Design, Development and Characterization of Graphene Sand Nano-Composite for Water Filtration

2020 ◽  
Vol 63 (2) ◽  
pp. 118-122
Author(s):  
Shahid Hussain Abro ◽  
Alidad Chandio ◽  
Iftikhar A. Channa ◽  
Abdulaziz S. Alaboodi
Keyword(s):  
Design Development ◽  
Visible Spectroscopy ◽  
Sem Images ◽  
River Sand ◽  
Nano Composite ◽  
Ftir Characterization ◽  
Global Issue ◽  
Scientific Approach ◽  
Uv Visible

  Water purification and filtration is a global issue and many researchers are engaged to resolve this problem by adopting the scientific approach, graphene sand composite was prepared through bio- synthesized technique. River sand was used in this context to remove the impurities already present in the sand 0.1M nitric acid treated the sand and the product was powder black in colour, referred as GSC, graphene sand composite. SEM, XRD and FTIR characterization was used to analyze the results. SEM images showed nano sized layers or sheets of graphene extending outwards.The XRD peak represents the multi lagered graphene structure which is formed by the treatment of the composite with acid and application of the high temperature during experiment UV-visible spectroscopy results successfully reveals the filtration difference between mud water and filtered water.  

scholarly journals Graphene Functionalization by 1,6-Diaminohexane and Silver Nanoparticles for Water Disinfection

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Abdelsattar O. E. Abdelhalim ◽  
Ahmed Galal ◽  
Mohamed Z. Hussein ◽  
Ibrahim E.-T. El Sayed
Keyword(s):  
Silver Nanoparticles ◽  
Fecal Coliform ◽  
Total Coliform ◽  
Water Disinfection ◽  
Coliform Bacteria ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Graphene Functionalization ◽  
First Time

Reduced graphene (G) was prepared by chemically reducing graphene oxide (GO). For the first time, the resulting G was functionalized by 1,6-diaminohexane and decorated with silver nanoparticles (AgNPs). The resulting G and modified G were characterized by X-ray diffraction (XRD), nuclear magnetic resonance (NMR), infrared (FTIR) spectroscopies, and high resolution transmission electron microscopy (HRTEM). The 1,6-diaminohexane-graphene structure was ascertained from the NMR and FTIR data. AgNPs were identified with various sizes within the graphene matrix. The resulting hybrid material was used as an effective antimicrobial contact catalyst for disinfecting water from Total Coliform and Fecal Coliform bacteria. A triple action in this respect was achieved from graphene, 1,6-diaminohexane, and AgNPs without observed release of silver that causes toxicity.

scholarly journals Development, Testing and Characterization of Al NanoTiCp Composites through Powder Metallurgy Techniques

2021 ◽  
Vol 5 (8) ◽  
pp. 224
Author(s):  
Gaurav Bajpai ◽  
Anuradha Tiwari ◽  
Rajesh Purohit ◽  
Vijay Panchore ◽  
Rashmi Dwivedi ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Matrix Composites ◽  
Micro Hardness ◽  
Compaction Process ◽  
Sem Images ◽  
Nano Composite ◽  
Industrial Sectors ◽  
Isostatic Compaction ◽  
Indirect Tensile

In the present scenario, weight diminution and strength enrichment are the main requirements for escalating the application of a nano composite material in different sectors. Several industrial sectors, such as automobile, defense and aerospace, are making various components of nano composites with the help of powder metallurgy processing. In this study, Al nanoTiCp composites (2, 4 and 6 wt %) were contrived through modified powder metallurgy (PM) techniques with the help of Cold Isostatic Compaction process (CIP). The mechanical properties such as density, porosity, micro-hardness, compressive strength and indirect tensile strength were increasing with the reinforcement of nanoTiCp particles up to 4 wt % in Al metal matrix composites. Nevertheless, clustering of nanoTiCp particles were found at 6 wt %, which is also observed in SEM images.

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Mai Ngọc Tuan Anh
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Silver Nitrate ◽  
Sodium Borohydride ◽  
Trisodium Citrate ◽  
Synthesis And Characterization ◽  
Silver Nanoplates ◽  
Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

Optimization and Physicochemical Characterization of Chitosan and Chitosan Nanoparticles Extracted from the Crayfish Procambarus clarkii Wastes

2019 ◽  
Vol 38 (2) ◽  
pp. 385 ◽  
Author(s):  
Marwa M. El-Naggar ◽  
Wael S. I. Abou-Elmagd ◽  
Ashraf Suloma ◽  
Hamza A. El-Shabaka ◽  
Magdy T. Khalil ◽  
...  
Keyword(s):  
Procambarus Clarkii ◽  
Chitosan Nanoparticles ◽  
Physicochemical Characterization
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