Anomalous multiphonon features of hyper-Raman in ZnO NPs

Ahmed, Eliyash; Roy, Ranit; Rajaraman, R.; Senthilkumar, K.

doi:10.1088/1757-899x/561/1/012031

Cited by 1 publication

(1 citation statement)

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“…1,20 Metal nanoparticles, such as Fe, Ag, and Cu NPs, can be introduced into the prepared GA/HA cryogels as GA/HA-M (M: Fe, Ag, and Cu) cryogel composites that render increased antimicrobial activity for the resultant materials. [21][22][23] Morphological and physicochemical characterizations of the particles and cryogels were evaluated by using scanning electron microscope (SEM), Fourier transform infrared (FT-IR), dynamic light scattering (DLS), and zeta potential measurements. The maximum swelling capacity, moisture content of GA cryogel, and GA/HA cryogel were determined at physiological conditions such as pH 5.4, 7.4, and 9; the pore volume (Vp) of the cryogels was determined.…”

Section: Introductionmentioning

confidence: 99%

Humic acid particle embedded super porous gum Arabic cryogel network for versatile use

Suner

Şahiner

2017

Polymers for Advanced Techs

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Super porous gum Arabic (GA) cryogels were synthesized by crosslinking of natural GA with divinyl sulfone at cryogenic conditions, −20°C for potential biomedical applications. Humic acid (HA) nanoparticles were also prepared by using degradable and biocompatible crosslinkers such as trimethylolpropane triglycidyl ether, poly(ethylene glycol) diglycidyl ether, and trisodium trimetaphosphate in a single step and then entrapped within GA cryogel network as GA/HA particle cryogel. Furthermore, GA/HA cryogel was used as a template for Ag, Cu, and Fe nanoparticle preparation, and their antimicrobial properties were tested against Escherichia coli, Staphylococcus aureus, and Bacillus subtilis strains. The minimum inhibition concentration values of Ag and Cu nanoparticle-loaded GA/HA cryogel composites were determined as 10 mg mL −1. Furthermore, the blood compatibility tests such as hemolysis and blood clotting indexes were determined for GA cryogels and found to be more compatible with 0.08 ± 0.01% hemolysis and 89.4 ± 6.1 blood clotting values, whereas the hemolysis of the Ag, Cu, and Fe nanoparticle-loaded GA/HA Ag, Cu, and Fe metal nanoparticle cryogel composites decreased in the order of Fe > Cu > Ag nanoparticles. KEYWORDScryogel/microgel, GA/HA natural polymer, gum Arabic cryogel/hydrogel, hemocompatible cryogel composite, humic acid micro/nanogel

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Section: Introductionmentioning

confidence: 99%