Sulfur dioxide adsorption by Iron Oxide Nanoparticles@Clinoptilolite/HCl

Introduction: The purpose of this study was to investigate and compare the effect of iron oxide nanoparticles on the adsorption of sulfur dioxide by modified zeolite with hydrochloric acid. In this investigation was used modi- fied zeolite with HCl with and without iron oxide nanoparticles (Iron Oxide Nanoparticles@Clinoptilolite/HCl) as adsorbent. Materials and methods: Structural characteristics, chemical composition and specific surface area of adsorbent were determined using the FTIR, FE- SEM, EDX, Mapping, XRD, XRF and BET techniques. Glass cylinder filled with zeolite seeds and SO2 cylinder balanced with N2 gas was used for experi- ments. It was evaluated factors affecting SO2 uptake process including tem- perature and contact time, also thermodynamics and kinetics of adsorption. Sulfur dioxide adsorption of real sample was taken with both adsorbents. Results: Adsorption efficiency of SO2 in the synthetic and actual sample were %82.8±5.5 and %67.2±7.21 respectively, by modified zeolite with HCl and iron oxide nanoparticles in the optimum conditions of temperature of 25 °C and duration 28.5 min. As well as, removal percentage average was obtained in the synthetic and actual sample %46.1±4.34 and %35.8±5.85 respectively, by modified zeolite with HCl without nanoparticles in optimum condition of temperature of 25 °C and contact time of 20.5 min.The results showed that SO2 adsorption is an exothermic and spontaneous process and adsorption ki- netics of sulfur dioxide by both adsorbent is more consistent Pseudo-second order kinetics model. Conclusion: The use of iron oxide nanoparticles on the zeolite can increase SO2 removal efficiency from the gas phase.

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Investigation of the factors affecting the photothermal therapy potential of small iron oxide nanoparticles over the 730–840 nm spectral region

Photochemical & Photobiological Sciences ◽

10.1039/c8pp00203g ◽

2018 ◽

Vol 17 (11) ◽

pp. 1787-1793 ◽

Cited By ~ 6

Author(s):

K. Bilici ◽

A. Muti ◽

F. Demir Duman ◽

A. Sennaroğlu ◽

H. Yağcı Acar

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Spectral Region ◽

Photothermal Therapy ◽

Laser Intensity ◽

Excitation Wavelength ◽

Oxide Nanoparticles ◽

Factors Affecting

Photothermal activity of SPIONs is not dependent on the excitation wavelength, attenuation or laser intensity but to the power.

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Size and distribution of the iron oxide nanoparticles in SBA-15 nanoporous silica via SANS study

Scientific Reports ◽

10.1038/s41598-019-52417-w ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 1

Author(s):

Adriana Zeleňáková ◽

Pavol Hrubovčák ◽

Ondrej Kapusta ◽

Norbert Kučerka ◽

Aleksander Kuklin ◽

...

Keyword(s):

Iron Oxide ◽

Neutron Scattering ◽

Iron Oxide Nanoparticles ◽

Structural Characteristics ◽

Superposition Principle ◽

Structural Features ◽

Silica Matrix ◽

The Body ◽

Oxide Nanoparticles ◽

Wide Range

Abstract Structural characteristics of nanocomposite series consisting of iron oxide nanoparticles (NPs) embedded in the regular pores of amorphous silica matrix (SBA-15) were investigated by means of small angle neutron scattering (SANS). By virtue of unique neutron properties, insight into the inner structure and matter organization of this kind of systems was facilitated for the first time. Based on rigorous experimental support, fundamental model describing the neutron scattering intensity distribution was proposed by assuming general composite structural features. Model application to SANS data confirmed the presence of iron oxide NPs in the body of examined matrices, providing additional information on their shape, concentration and size distribution. Scattering superposition principle employed in the model conception allows for tailoring its fundamental characteristics, and renders it a potent and versatile tool for a wide range of applications.

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Benzene Removal by Iron Oxide Nanoparticles Decorated Carbon Nanotubes

Journal of Nanomaterials ◽

10.1155/2016/5654129 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 14

Author(s):

Aamir Abbas ◽

Basim Ahmed Abussaud ◽

Ihsanullah ◽

Nadhir A. H. Al-Baghli ◽

Marwan Khraisheh ◽

...

Keyword(s):

Carbon Nanotubes ◽

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Contact Time ◽

Batch Adsorption ◽

Oxide Nanoparticles ◽

Order Kinetic ◽

Initial Concentration ◽

Adsorbent Dosage ◽

Benzene Removal

In this paper, carbon nanotubes (CNTs) impregnated with iron oxide nanoparticles were employed for the removal of benzene from water. The adsorbents were characterized using scanning electron microscope, X-ray diffraction, BET surface area, and thermogravimetric analysis. Batch adsorption experiments were carried out to study the adsorptive removal of benzene and the effect of parameters such as pH, contact time, and adsorbent dosage. The maximum removal of benzene was 61% with iron oxide impregnated CNTs at an adsorbent dosage 100 mg, shaking speed 200 rpm, contact time 2 hours, initial concentration 1 ppm, and pH 6. However, raw CNTs showed only 53% removal under same experimental conditions. Pseudo-first-order kinetic model was found well to describe the obtained data on benzene removal from water. Initial concentration was varied from 1 to 200 mg/L for isotherms study. Langmuir isotherm model was observed to best describe the adsorption data. The maximum adsorption capacities were 987.58 mg/g and 517.27 mg/g for iron oxide impregnated CNTs and raw CNTs, respectively. Experimental results revealed that impregnation with iron oxide nanoparticles significantly increased the removal efficiency of CNTs.

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Magnetic hyperthermia – high therapeutic efficiency of superparamagentic iron oxide nanoparticles in cancer xenograft models

RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren ◽

10.1055/s-0034-1372776 ◽

2014 ◽

Vol 186 (S 01) ◽

Author(s):

H Dähring ◽

R Lundwig ◽

S Kossatz ◽

V Ettelt ◽

G Rimkus ◽

...

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Magnetic Hyperthermia ◽

Oxide Nanoparticles ◽

Therapeutic Efficiency ◽

Xenograft Models

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

Journal of Drug Discovery and Therapeutics ◽

10.32553/jddt.v6i10.444 ◽

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.

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Novel Superparamagnetic Iron Oxide Nanoparticles for a Multifunctional Nanomedicine Platform

10.1557/proc-1140-hh05-11 ◽

2008 ◽

Cited By ~ 1

Author(s):

Oleh Taratula ◽

Ronak Savla ◽

Ipsit Pandya ◽

Andrew Wang ◽

Tamara Minko ◽

...

Keyword(s):

Iron Oxide ◽

Iron Oxide Nanoparticles ◽

Superparamagnetic Iron Oxide ◽

Superparamagnetic Iron Oxide Nanoparticles ◽

Oxide Nanoparticles

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

10.26434/chemrxiv.6815672.v1 ◽

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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