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Total 52199 results found since Jan 2013.

Electron/gamma radiation-induced synthesis and catalytic activity of gold nanoparticles supported on track-etched poly(ethylene terephthalate) membranes
In this study, Au NPs were generated in the nanochannels of poly (acrylic acid) grafted poly (ethylene terephthalate) track-etched membranes (PAA-g-PET TeMs) by radiation-induced reduction in alcoholic solution using electron beams (5 MeV) and gamma-radiation (Co-60). Prior to irradiation Au3+ ions were immobilized by carboxylate groups of PAA grafts on PET TeMs. The effect of the absorbed dose as well as dose rate on the size and other characteristics of Au NPs were studied using UV–vis, FTIR, XPS spectroscopies, SEM and XRD analysis. It was found that PAA-g-PET TeMs can be successfully used as support material for ra...
Source: Materials Chemistry and Physics - June 27, 2018 Category: Materials Science Source Type: research

Phytofabrication of Selenium Nanoparticles From Emblica officinalis Fruit Extract and Exploring Its Biopotential Applications: Antioxidant, Antimicrobial, and Biocompatibility
Conclusion The present study shows phytofabrication of SeNPs from aqueous fruit extract of E. officinalis by facile, green, economic, and eco-friendly approach. The aqueous fruit extract of E. officinalis was rich with phenolics, flavonoids, and tannins, and was found appropriate for biosynthesis of nanoparticles. The synthesized PF-SeNPs exhibited highly stable, negative charge, amorphous nature, spherical shape and nano-size. The PF-SeNPs has presented efficient bio-potential applications, i.e., antioxidant, antimicrobial, and biocompatibility. The PF-SeNPs has shown potent free radical scavenging activity and it was fo...
Source: Frontiers in Microbiology - April 29, 2019 Category: Microbiology Source Type: research

Impact of Formulation on the Quality and Stability of Freeze-dried Nanoparticles
In conclusion, different types of nanoparticles face distinct challenges for freeze-drying, and lyoprotectants differentially affect various stability and quality attributes of freeze-dried nanoparticles.PMID:34732383 | DOI:10.1016/j.ejpb.2021.10.014
Source: European Journal of Pharmaceutics and Biopharmaceutics - November 4, 2021 Category: Drugs & Pharmacology Authors: Wei-Chung Luo Andr é O'Reilly Beringhs Rachel Kim William Zhang Sajal M Patel Robin H Bogner Xiuling Lu Source Type: research

Photo-catalytic and biomedical applications of one-step, plant extract-mediated green-synthesized cobalt oxide nanoparticles
Environ Sci Pollut Res Int. 2022 Oct 18. doi: 10.1007/s11356-022-23645-x. Online ahead of print.ABSTRACTIn the present work, for the first time, green chemically synthesized and stabilized Co3O4 nanoparticles were employed for catalytic conversion of isopropyl alcohol to acetone by dehydrogenation of IPA. Plant extract of Rosmarinus officinalis was used as a reducing and stabilizing agent for this synthesis. The biosynthesized Co3O4 nanoparticles were annealed at 450℃ followed by their physiochemical characterizations through XRD, SEM, AFM, and FTIR. Size distribution information collected through XRD and AFM back each o...
Source: Environmental Science and Pollution Research International - October 18, 2022 Category: Environmental Health Authors: Ayesha Sani Ali Murad Dilawar Hassan Ghulam Mustafa Channa Ahmed El-Mallul Dora Iliana Medina Source Type: research

Bioinspired antibacterial PVA/Melanin-TiO < sub > 2 < /sub > hybrid nanoparticles: the role of poly-vinyl-alcohol on their self-assembly and biocide activity
This study provides key information on the mutual influence of organic/inorganic components on the functional properties of the final hybrid nanocomposites, contributing to define a much more far-reaching implementation in the synthesis of bioinspired polymer-based nanocomposites.PMID:33706162 | DOI:10.1016/j.colsurfb.2021.111671
Source: Colloids and Surfaces - March 11, 2021 Category: Biotechnology Authors: Giulio Pota Anna Zanfardino Michela Di Napoli Domenico Cavasso Mario Varcamonti Gerardino D'Errico Alessandro Pezzella Giuseppina Luciani Giuseppe Vitiello Source Type: research

Rapid removal of chloramphenicol via the synergy of Geobacter and metal oxide nanoparticles
This study provides new enhancing strategies for the bioremediation of chloramphenicol in the environments.PMID:34426266 | DOI:10.1016/j.chemosphere.2021.131943
Source: Chemosphere - August 24, 2021 Category: Chemistry Authors: Leilei Xiao Fanghua Liu P Senthil Kumar Yunwei Wei Jian Liu Dianfeng Han Shangjie Shan Xingyu Wang Run Dang Jiafeng Yu Source Type: research

Cellulose nanocrystals ‑silver nanoparticles-reduced graphene oxide based hybrid PVA nanocomposites and its antimicrobial properties
Int J Biol Macromol. 2021 Sep 20:S0141-8130(21)01963-2. doi: 10.1016/j.ijbiomac.2021.08.237. Online ahead of print.ABSTRACTTowards fabricating a hybrid biodegradable multifunctional nanocomposite, cellulose nanocrystal (CNC), reduced graphene oxide (rGO) and silver (Ag) nanoparticles were reinforced into polyvinyl alcohol (PVA) polymer matrix. One-step reduction process was followed, composed of reducing graphene oxide (GO) and silver nitrate (AgNO3) into rGO and Ag nanoparticles through hydrazine hydrate (chemical reduction method), respectively. Uniformly dispersed CNC, rGO and Ag nanoparticles in PVA matrix led to an in...
Source: International Journal of Biological Macromolecules - September 23, 2021 Category: Biochemistry Authors: Nidhi Pal Somesh Banerjee Partha Roy Kaushik Pal Source Type: research