scholarly journals Green chemical synthesis for well-defined and sharply distributed SiO2@FexOy particles

2021 ◽  
Author(s):  
Leis Florencia ◽  
Long Leonel Andrés ◽  
Di Virgilio Ana ◽  
Pablo Arnal
Keyword(s):  
Iron Oxide ◽  
Chemical Synthesis ◽  
Colloidal Silica ◽  
Oxide Shell ◽  
Silica Spheres ◽  
Shell Formation ◽  
Colloidal Spheres ◽  
Silica Core ◽  
Core Shell Structure ◽  
Green Chemical Synthesis

Abstract Using a non-toxic precursor, we created a green chemical synthesis for colloidal spheres with a core@shell structure having a silica core and an iron oxide shell (SiO2@FexOy). Our synthesis pathway enabled an iron oxide shell formation with a 9 ± 6 nm thick shell onto colloidal silica spheres (ca. 700 nm). SiO2@FexOy particles reduced A549 cell viability and induced DNA damage. SiO2@FexOy particles showed the potential for removing fluoride from water.

Production and characterization of long-term stable superparamagnetic iron oxide-shell silica-core nanocomposites

2017 ◽  
Vol 442 ◽  
pp. 497-503 ◽  
Author(s):  
Angelika Nistler ◽  
Carolin Hartmann ◽  
Christine Rümenapp ◽  
Matthias Opel ◽  
Bernhard Gleich ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Superparamagnetic Iron Oxide ◽  
Oxide Shell ◽  
Silica Core

scholarly journals Plantain Peel Mediated Green Synthesis Iron Oxide Nanoparticles, Surface Functionalization, and Them Performance towards Methylene Blue and Methyl Orange Dye Removal

2018 ◽  
Vol 7 (3.36) ◽  
pp. 101
Author(s):  
Woan Giun Tan ◽  
Wei Ming Ng ◽  
Jit Kang Lim ◽  
Hui Xin Che
Keyword(s):  
Methylene Blue ◽  
Iron Oxide ◽  
Methyl Orange ◽  
Iron Oxide Nanoparticles ◽  
Dye Removal ◽  
Oxide Shell ◽  
Oxide Nanoparticles ◽  
Shell Nanoparticles ◽  
Silica Core ◽  
Peel Extract

Currently, green synthesis approach is used as the biocompatible, eco-friendly, and sustainable alternative of conventional approaches to synthesize iron oxide nanoparticles. In this work, magnetic iron oxide nanoparticles were synthesized by using plantain peel extract via green and biogenic approach. The surface of green synthesized iron oxide nanoparticles was functionalized to increase the stability of the nanoparticles and maintain the coexisting of both magnetic and catalytic property of the nanoparticles at the same time. Two kinds of surface functionalization structures were synthesized in this study, included silica core-iron oxide shell nanoparticles and silica core-PDDA polymerized iron oxide shell nanoparticles. The main concern of this study is the performance of bare and surface functionalized green synthesized nanoparticles. Methylene blue and methyl orange dyes were used as the model of dye removal test to indicate the feasibility of the synthesized nanocomposites. In summary, surface functionalized nanocomposites achieved higher dye removal efficiency than bare green synthesized iron oxide nanoparticles in both the methylene blue and methyl orange degradation test. Methylene blue dye was removed in higher rate than methyl orange dye due to the presence of negatively charged iron oxide nanoparticles with both the adsorptive and catalytic properties. At last, the components present in plantain peel extract were confirmed by using Fourier Transform Infrared Spectroscopy.  

Green chemical synthesis of new chelating fiber and its mechanism for recovery gold from aqueous solution

2019 ◽  
Vol 378 ◽  
pp. 120674 ◽  
Author(s):  
Weiquan Zhang ◽  
Lina Wu ◽  
Xiaoxiang Han ◽  
Lanying Yao ◽  
Shengze Zhao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Chemical Synthesis ◽  
Green Chemical Synthesis

High-resolution T1 MRI via renally clearable dextran nanoparticles with an iron oxide shell

2021 ◽  
Author(s):  
Tae-Hyun Shin ◽  
Pan Ki Kim ◽  
Sunghwi Kang ◽  
Jiyong Cheong ◽  
Soojin Kim ◽  
...  
Keyword(s):  
Iron Oxide ◽  
High Resolution ◽  
Oxide Shell

ChemInform Abstract: Green Chemical Synthesis of Bisphosphonic/Dronic Acid Derivatives

ChemInform ◽  
2015 ◽  
Vol 46 (40) ◽  
pp. no-no
Author(s):  
Gyorgy Keglevich ◽  
Alajos Grun ◽  
Rita Kovacs ◽  
Sandor Garadnay ◽  
Istvan Greiner
Keyword(s):  
Chemical Synthesis ◽  
Green Chemical Synthesis

Zero valent iron core–iron oxide shell nanoparticles as small magnetic particle imaging tracers

2020 ◽  
Vol 56 (24) ◽  
pp. 3504-3507 ◽  
Author(s):  
Lucy Gloag ◽  
Milad Mehdipour ◽  
Marina Ulanova ◽  
Kevin Mariandry ◽  
Muhammad Azrhy Nichol ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Nanoparticle ◽  
Magnetic Particle ◽  
Zero Valent Iron ◽  
Oxide Shell ◽  
Iron Core ◽  
Shell Nanoparticles ◽  
Magnetic Particle Imaging ◽  
Nanoparticle Imaging ◽  
Particle Imaging

Zero valent iron core–iron oxide shell nanoparticles coated with a multi-phosphonate brush co-polymer are shown to be small and effective magnetic nanoparticle imaging tracers.

Influence of Lysozyme on the Biomimetic Growth of Silica Tubes in Porous Membranes

2007 ◽  
Vol 1008 ◽  
Author(s):  
Clémentine Gautier ◽  
Rémi Courson ◽  
Pascal Jean Lopez ◽  
Jacques Livage ◽  
Thibaud Coradin
Keyword(s):  
Porous Membranes ◽  
Shell Formation ◽  
Core Particle ◽  
Biomimetic Models ◽  
Membrane Pores ◽  
The Core ◽  
Core Shell Structure ◽  
Poly Carbonate ◽  
Tube Shell

AbstractPore channels of poly-carbonate membranes were recently used as biomimetic models to study the effect of confinement on silicate condensation, leading to the formation of silica tubes exhibiting a core-shell structure. In this work, we pre-immobilized lysozyme on the membrane pores, inducing the modification of the tube shell formation process, and variation in core particle size. These data strengthen previous assumptions on the role of interfacial interactions on the growth of the tube shell and indicate that such interactions also influence the core particle formation. Such approach therefore seems suitable to mimic the formation of silica/protein multilayers as found in several biomineralizing organisms

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