Synthesis and characterization of β-lactam functionalized superparamagnetic Fe3O4@SiO2 nanoparticles as an approach for improvement of antibacterial activity of β-lactams

RSC Advances ◽  
2016 ◽  
Vol 6 (49) ◽  
pp. 43376-43387 ◽  
Author(s):  
Mohsen Esmaeilpour ◽  
Ali Reza Sardarian ◽  
Aliasghar Jarrahpour ◽  
Edris Ebrahimi ◽  
Jaber Javidi
Keyword(s):  
Antibacterial Activity ◽  
Sio2 Nanoparticles ◽  
Synthesis And Characterization ◽  
Synergic Effect

Preparation of magnetic β-lactam functionalized Fe3O4@SiO2 nanoparticles has a synergic effect to improve the antibacterial activity.

Electrospun PU/MgO/Ag Nanofibers for Antibacterial Activity and Flame Retardency

2021 ◽  
pp. 0887302X2110094
Author(s):  
V. Mamtha ◽  
H. N. Narasimha Murthy ◽  
V. Pujith Raj ◽  
Prashantha Tejas ◽  
C. S. Puneet ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Melting Point ◽  
Protective Clothing ◽  
Electrospun Nanofibers ◽  
Synthesis And Characterization ◽  
Zone Of Inhibition ◽  
Solution Combustion ◽  
E Coli ◽  
Afterglow Time

Antibacterial activity and fire retardation are equally desired for protective clothing. For achieving this, AgNP and MgO are independently researched as nanofillers in Polyurethane based electrospun nanofibers and their synergistic effect is scarcely addressed. This article reports synthesis and characterization of MgO of 70.01 nm and AgNP of 51 to 76 nm by solution combustion and hydrothermal routes respectively and their incorporation in electrospinning of Polyurethane. Flow rate 1 ml/hr, applied voltage 13 kV, tip to collector distance 15 cm were adopted for the electrospinning. Nanofibers of 65 nm were obtained for PU/MgO (3 wt. %) and 106 nm for PU/MgO (3 wt. %)/Ag (1 wt. %). Addition of MgO increased the melting point, after flame time and afterglow time. Incorporation of AgNP improved antibacterial activity. PU/MgO/Ag (2 wt. %) exhibited zone of inhibition of 2.1 cm and 3 cm against E. Coli and S. Aureus, respectively.

Synthesis and characterization of core-shell SiO2 nanoparticles/poly(3-aminophenylboronic acid) composites

2007 ◽  
Vol 104 (4) ◽  
pp. 2743-2750 ◽  
Author(s):  
Yu-Ping Zhang ◽  
Se-Hee Lee ◽  
Kakarla Raghava Reddy ◽  
Anantha Iyengar Gopalan ◽  
Kwang-Pill Lee
Keyword(s):  
Sio2 Nanoparticles ◽  
Synthesis And Characterization ◽  
Core Shell ◽  
Aminophenylboronic Acid
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