Preparation and characterisation of silver nanoparticles in an aqueous suspension of TETA modified graphene oxide and their antibacterial activity

2018 ◽  
Vol 13 (3) ◽  
pp. 369-373 ◽  
Author(s):  
Ran Luo ◽  
Zhiyao Xu ◽  
Xuemei Lin
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Aqueous Suspension ◽  
Modified Graphene Oxide ◽  
Modified Graphene

scholarly journals Antimicrobial Effect of Chitosan Films on Food Spoilage Bacteria

2021 ◽  
Vol 22 (11) ◽  
pp. 5839
Author(s):  
Natalia Wrońska ◽  
Nadia Katir ◽  
Katarzyna Miłowska ◽  
Nisrine Hammi ◽  
Marta Nowak ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Metal Oxide ◽  
Oxide Films ◽  
Nanocomposite Films ◽  
Metal Oxide Films ◽  
Spoilage Bacteria ◽  
Modified Graphene Oxide ◽  
Chitosan Films ◽  
Modified Graphene

Synthetic materials commonly used in the packaging industry generate a considerable amount of waste each year. Chitosan is a promising feedstock for the production of functional biomaterials. From a biological point of view, chitosan is very attractive for food packaging. The purposes of this study were to evaluate the antibacterial activity of a set of chitosan-metal oxide films and different chitosan-modified graphene (oxide) films against two foodborne pathogens: Campylobacter jejuni ATCC 33560 and Listeria monocytogenes 19115. Moreover, we wanted to check whether the incorporation of antimicrobial constituents such as TiO2, ZnO, Fe2O3, Ag, and graphene oxide (GO) into the polymer matrices can improve the antibacterial properties of these nanocomposite films. Finally, this research helps elucidate the interactions of these materials with eukaryotic cells. All chitosan-metal oxide films and chitosan-modified graphene (oxide) films displayed improved antibacterial (C. jejuni ATCC 33560 and L. monocytogenes 19115) properties compared to native chitosan films. The CS-ZnO films had excellent antibacterial activity towards L. monocytogenes (90% growth inhibition). Moreover, graphene-based chitosan films caused high inhibition of both tested strains. Chitosan films with graphene (GO, GOP, GOP-HMDS, rGO, GO-HMDS, rGOP), titanium dioxide (CS-TiO2 20:1a, CS-TiO2 20:1b, CS-TiO2 2:1, CS-TiO2 1:1a, CS-TiO2 1:1b) and zinc oxide (CS-ZnO 20:1a, CS-ZnO 20:1b) may be considered as a safe, non-cytotoxic packaging materials in the future.

The synthesis of citrate-modified silver nanoparticles in an aqueous suspension of graphene oxide nanosheets and their antibacterial activity

2013 ◽  
Vol 105 ◽  
pp. 128-136 ◽  
Author(s):  
Manash R. Das ◽  
Rupak K. Sarma ◽  
Sarat Ch. Borah ◽  
Roopa Kumari ◽  
Ratul Saikia ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Aqueous Suspension ◽  
Graphene Oxide Nanosheets

Nanocomposite Coatings Based on Modified Graphene Oxide and Polydimethylsiloxane: Characterization and Thermal Properties

2020 ◽  
Vol 93 (11) ◽  
pp. 1765-1773
Author(s):  
N. Akhavan Sharif ◽  
M. Ehsani ◽  
D. Zaarei ◽  
M. R. Kalaee ◽  
R. Khajavi
Keyword(s):  
Graphene Oxide ◽  
Thermal Properties ◽  
Nanocomposite Coatings ◽  
Modified Graphene Oxide ◽  
Modified Graphene

scholarly journals Design, synthesis, and catalytic performance of modified graphene oxide based on a cobalt complex as a heterogenous catalyst for the preparation of aminonaphthoquinone derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17108-17115
Author(s):  
Mahnaz Mirheidari ◽  
Javad Safaei-Ghomi
Keyword(s):  
Graphene Oxide ◽  
Cobalt Complex ◽  
Catalytic Performance ◽  
Silica Particles ◽  
Design Synthesis ◽  
Spherical Silica ◽  
Modified Graphene Oxide ◽  
Spherical Silica Particles ◽  
Heterogenous Catalyst ◽  
Modified Graphene

GO@f-SiO2@Co is a heterogenous catalyst composed of spherical silica particles grafted on the surface of graphene oxide with ethylenediamine ligands and coordination with Co(ii). We assessed the activity of the catalyst for the synthesis of aminonaphthoquinones.

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