scholarly journals A magnetically recoverable photocatalyst prepared by supporting TiO2nanoparticles on a superparamagnetic iron oxide nanocluster core@fibrous silica shell nanocomposite

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9587-9595 ◽  
Author(s):  
Bokyung Seo ◽  
Chaedong Lee ◽  
Donggeon Yoo ◽  
Peter Kofinas ◽  
Yuanzhe Piao
Keyword(s):  
Iron Oxide ◽  
Superparamagnetic Iron Oxide ◽  
Silica Shell

A magnetically recoverable photocatalyst was prepared by supporting TiO2nanoparticles on a superparamagnetic iron oxide nanocluster core@fibrous silica shell nanocomposite.

scholarly journals A molecular nanocap activated by superparamagnetic heating for externally stimulated cargo release

2016 ◽  
Vol 52 (9) ◽  
pp. 1843-1846 ◽  
Author(s):  
B. Rühle ◽  
S. Datz ◽  
C. Argyo ◽  
T. Bein ◽  
J. I. Zink
Keyword(s):  
Iron Oxide ◽  
Mesoporous Silica ◽  
Superparamagnetic Iron Oxide ◽  
Alder Reaction ◽  
Silica Shell ◽  
Diels Alder ◽  
Shell Nanoparticles ◽  
Diels Alder Reaction ◽  
Iron Oxide Core

A novel thermoresponsive snaptop for stimulated cargo release from superparamagnetic iron oxide core – mesoporous silica shell nanoparticles based on a [2 + 4] cycloreversion reaction (retro-Diels Alder reaction) is presented.

scholarly journals Comparison of Iron Oxide Nanoparticles in Photothermia and Magnetic Hyperthermia: Effects of Clustering and Silica Encapsulation on Nanoparticles’ Heating Yield

2020 ◽  
Vol 10 (20) ◽  
pp. 7322 ◽  
Author(s):  
Sebastjan Nemec ◽  
Slavko Kralj ◽  
Claire Wilhelm ◽  
Ali Abou-Hassan ◽  
Marie-Pierre Rols ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Heat Generation ◽  
Photothermal Therapy ◽  
Superparamagnetic Iron Oxide ◽  
Magnetic Hyperthermia ◽  
Silica Shell ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Silica Encapsulation

Photothermal therapy is gathering momentum. In order to assess the effects of the encapsulation of individual or clustered superparamagnetic iron oxide nanoparticles (SPIONs) on nanoparticle light-to-heat conversion, we designed and tested individual and clustered SPIONs encapsulated within a silica shell. Our study compared both photothermia and magnetic hyperthermia, and it involved individual SPIONs as well as silica-encapsulated individual and clustered SPIONs. While, as expected, SPION clustering reduced heat generation in magnetic hyperthermia, the silica shell improved SPION heating in photothermia.

Multifunctional Fe3O4@nSiO2@mSiO2/Pr-Imi-NH2·Ag core–shell microspheres as highly efficient catalysts in the aqueous reduction of nitroarenes: improved catalytic activity and facile catalyst recovery

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 41871-41877 ◽  
Author(s):  
Mina Jafari Nasab ◽  
Ali Reza Kiasat
Keyword(s):  
Catalytic Activity ◽  
Iron Oxide ◽  
Mesoporous Silica ◽  
Superparamagnetic Iron Oxide ◽  
Silica Shell ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Functionalized Mesoporous Silica ◽  
Iron Oxide Core ◽  
Core Shell Nanoparticles

Core@shell nanoparticles with a superparamagnetic iron oxide core, a middle nonporous silica shell, and an outer organo functionalized mesoporous silica shell were synthesized and evaluated for immobilizing Ag nanoparticles.

scholarly journals SPIO@SiO2–Re@PEG nanoparticles as magneto-optical dual probes and sensitizers for photodynamic therapy

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38521-38532 ◽  
Author(s):  
Marco Galli ◽  
Elisa Moschini ◽  
Maria Vittoria Dozzi ◽  
Paolo Arosio ◽  
Monica Panigati ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Iron Oxide ◽  
Singlet Oxygen ◽  
Superparamagnetic Iron Oxide ◽  
Silica Shell ◽  
Active Components ◽  
Rhenium Complex ◽  
Iron Oxide Core

A superparamagnetic iron oxide core and a photoluminescent rhenium complex embedded in a silica shell are the active components of a dual magneto-optical nanoprobe, also able to generate singlet oxygen upon irradiation.

scholarly journals Surfactant free superparamagnetic iron oxide nanoparticles for stable ferrofluids in physiological solutions

2015 ◽  
Vol 51 (14) ◽  
pp. 2863-2866 ◽  
Author(s):  
K. Mandel ◽  
M. Straßer ◽  
T. Granath ◽  
S. Dembski ◽  
G. Sextl
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Superparamagnetic Iron Oxide ◽  
Silica Shell ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Wide Ph Range ◽  
Ph Range

Ferrofluids of superparamagnetic Fe3O4 nanoparticles with “patchy” silica shell are stable over a wide pH range and in physiological solutions.

TARGETING CYCLIN B1 WITH ANTISENSE OLIGONUCLETOTIDES- COATED SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES

2018 ◽  
Vol 6 (10) ◽  
Author(s):  
Hosam Zaghloul ◽  
Doaa A. Shahin ◽  
Ibrahim El- Dosoky ◽  
Mahmoud E. El-awady ◽  
Fardous F. El-Senduny ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Cellular Uptake ◽  
Superparamagnetic Iron Oxide ◽  
Cyclin B1 ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Mcf7 Cells ◽  
M Phase ◽  
The Impact

Antisense oligonucleotides (ASO) represent an attractive trend as specific targeting molecules but sustain poor cellular uptake meanwhile superparamagnetic iron oxide nanoparticles (SPIONs) offer stability of ASO and improved cellular uptake. In the present work we aimed to functionalize SPIONs with ASO targeting the mRNA of Cyclin B1 which represents a potential cancer target and to explore its anticancer activity. For that purpose, four different SPIONs-ASO conjugates, S-M (1–4), were designated depending on the sequence of ASO and constructed by crosslinking carboxylated SPIONs to amino labeled ASO. The impact of S-M (1–4) on the level of Cyclin B1, cell cycle, ROS and viability of the cells were assessed by flowcytometry. The results showed that S-M3 and S-M4 reduced the level of Cyclin B1 by 35 and 36%, respectively. As a consequence to downregulation of Cyclin B1, MCF7 cells were shown to be arrested at G2/M phase (60.7%). S-M (1–4) led to the induction of ROS formation in comparison to the untreated control cells. Furthermore, S-M (1–4) resulted in an increase in dead cells compared to the untreated cells and SPIONs-treated cells. In conclusion, targeting Cyclin B1 with ASO-coated SPIONs may represent a specific biocompatible anticancer strategy.

Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

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