Effect of hydrogenated iron oxide nanoparticles with regular spherical shape by underwater plasma discharge treatment for high-efficiency water purification

2020 ◽  
Vol 46 (15) ◽  
pp. 23582-23591
Author(s):  
Yesul Jeong ◽  
Ji-In Park ◽  
Myoung Gyu Ha ◽  
Jong-Seong Bae ◽  
Yunju Choi ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Water Purification ◽  
High Efficiency ◽  
Spherical Shape ◽  
Plasma Discharge ◽  
Oxide Nanoparticles ◽  
Discharge Treatment ◽  
Regular Spherical Shape

Superparamagnetic iron oxide nanoparticles enhance glioma radiosensitivity via inducing cell cycle arrest and apoptosis

2020 ◽  
Author(s):  
Jinning Mao ◽  
Meng Jiang ◽  
Xingliang Dai ◽  
Guodong Liu ◽  
Zhixiang Zhuang ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Glioma Cells ◽  
Superparamagnetic Iron Oxide ◽  
Spherical Shape ◽  
Treated Group ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
X Ray

Abstract Aim: Superparamagnetic iron oxide nanoparticles (SPIONs) is a widely used biomedical material for imaging and targeting drug delivery. We synthesized SPIONs and tested their effects on the radiosensitization of glioma.Methods: Acetylated 3-aminopropyltrimethoxysilane (APTS)-coated iron oxide nanoparticles (Fe3O4 NPs) were synthesized via a one-step hydrothermal approach and the surface was chemically modified with acetic anhydride to generate surface charge-neutralized NPs. NPs were characterized by TEM and ICP-AES. Radiosensitivity of U87MG glioma cells was evaluated by MTT assay. Cell cycle and apoptosis in glioma cells were examined by flow cytometry. Results: APTS-coated Fe3O4 NPs had a spherical or quasi-spherical shape with average size of 10.5±1.1 nm. NPs had excellent biocompatibility and intracellular uptake of NPs reached the peak 24 hours after treatment. U87 cell viability decreased significantly after treatment with both X-ray and NPs compared to X-ray treatment alone. Compared to X-ray treatment alone, the percentage of cells in G2/M phase (31.83%) significantly increased in APTS-coated Fe3O4 NPs plus X-ray treated group (P<0.05). In addition, the percentage of apoptotic cells was significant higher in APTS-coated Fe3O4 NPs plus X-ray treated group than in X-ray treatment alone group (P<0.05). Conclusion: APTS-coated Fe3O4 NPs achieved excellent biocompatibility and increased radiosensitivity for glioma cells.

Iron oxide magnetic nanoparticles synthesized by atmospheric microplasmas

2014 ◽  
Vol 32 ◽  
pp. 1460343 ◽  
Author(s):  
Ying Wang ◽  
Parvin Kaur ◽  
Augustine Tuck Lee Tan ◽  
Rajveer Singh ◽  
Paul Choon Keat Lee ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Decomposition Method ◽  
Plasma Discharge ◽  
Oxide Nanoparticles ◽  
Thermal Decomposition Method ◽  
Soft Ferromagnetic ◽  
Iron Oxide Magnetic Nanoparticles ◽  
High Possibility

This paper presents the synthesis of iron oxide nanoparticles using the atmospheric microplasma (AMP). The properties of iron oxide nanoparticles synthesized using AMP are compared with particles (i) formed in as-prepared solution and (ii) prepared using thermal decomposition method. Iron oxide nanoparticles prepared by all the 3 treatment methods exhibit quite soft ferromagnetic properties with coercivities less than 10 G. The AMP synthesis technique was found to be more efficient and better than thermal decomposition method due to ultra-shorter experiment time (around 2.5 min) as compared to 90 min required for thermal decomposition method. Moreover, AMP synthesized nanoparticles are better isolated and of smaller size than thermal decomposition ones. The effect of plasma discharge timings on synthesized nanoparticles has also been studied in this work. Coercivity of synthesized nanoparticles decreases with the increasing plasma discharge timings from 3 to 10 min. The nanoparticles synthesized using plasma discharge timing of 10 min exhibit the smallest coercivity of around 3 G. This suggests a high possibility of achieving super-paramagnetic nanoparticles by optimizing the plasma discharge timings of AMP.

Green Synthesis of Iron Oxide Nanoparticles for Lead Removal from Aqueous Solutions

2019 ◽  
Vol 805 ◽  
pp. 122-127 ◽  
Author(s):  
Lakshmi Prasanna Lingamdinne ◽  
Janardhan Reddy Koduru ◽  
Rama Rao Karri
Keyword(s):  
Heavy Metals ◽  
Iron Oxide ◽  
Aqueous Solutions ◽  
Iron Oxide Nanoparticles ◽  
High Efficiency ◽  
High Surface ◽  
Batch Adsorption ◽  
Oxide Nanoparticles ◽  
Lead Removal ◽  
Homogeneous Surface

Pb(II) being carcinogenic and one of the heavy metals which always pose a severe threat to human health. Adsorption is a commonly used method for the removal of heavy metal ions as this process possess high efficiency, easy to handle and cost-effective. Iron oxide based nanomaterial were found to be more attractive for the removal of heavy metals from the aqueous solution because of their size, high surface area, and magnetic. Therefore, in this research study, iron oxide nanoparticles modified with tangerine peel extract (T-Fe3O4) and utilized to carry batch adsorption experiments for the removal of lead from aqueous solutions. It was observed that 99% of Pb(II) adsorption removal was achieved with 0.6 g/L of T-Fe3O4 at an initial concentration of metal at 10 ppm and room temperature of 25°C. The adsorption isotherm was found to be monolayer on the homogeneous surface of the adsorbent. Therefore, the green tangerine peel modified iron oxide nanoparticles can be applied for lead removal from water resources for providing clean and hygienic water for a sustainable and healthier life.

In-situ deposition of silver−iron oxide nanoparticles on the surface of fly ash for water purification

2015 ◽  
Vol 453 ◽  
pp. 159-168 ◽  
Author(s):  
Mahesh Kumar Joshi ◽  
Hem Raj Pant ◽  
Nina Liao ◽  
Jun Hee Kim ◽  
Han Joo Kim ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Fly Ash ◽  
Iron Oxide Nanoparticles ◽  
Water Purification ◽  
Oxide Nanoparticles ◽  
In Situ Deposition

scholarly journals Superparamagnetic iron oxide nanoparticles (SPIONs) conjugated with lipase Candida antarctica A for biodiesel synthesis

RSC Advances ◽  
2020 ◽  
Vol 10 (63) ◽  
pp. 38490-38496
Author(s):  
Luis Fernando Peffi Ferreira ◽  
Thayná Mazzi de Oliveira ◽  
Sergio Hiroshi Toma ◽  
Marcos Makoto Toyama ◽  
Koiti Araki ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Enzymatic Activity ◽  
Iron Oxide Nanoparticles ◽  
High Efficiency ◽  
Superparamagnetic Iron Oxide ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Biodiesel Production ◽  
Oxide Nanoparticles ◽  
Biodiesel Synthesis ◽  
Lipase A

A newly designed biocatalyst prepared by conjugation of lipase A on SPION demonstrated high efficiency for biodiesel production. The nanomaterial was characterized by FTIR, TGA and XRD, and its enzymatic activity compared with a commercial standard.

scholarly journals Preparation and Characterization of a Tumor-Targeting Dual-Image System Based on Iron Oxide Nanoparticles Functionalized with Folic Acid and Rhodamine

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Alejandra Ancira-Cortez ◽  
Enrique Morales-Avila ◽  
Blanca E. Ocampo-García ◽  
Carlos González-Romero ◽  
Luis A. Medina ◽  
...  
Keyword(s):  
Folic Acid ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hela Cells ◽  
High Efficiency ◽  
Diagnostic Tools ◽  
Oxide Nanoparticles ◽  
Image System ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Dual Image

Cancer is one of the diseases with most deaths worldwide, around 8.2 million annually. For this reason, several treatments and diagnostic tools have been investigated and developed over the past decades. Among them, a dual-image system has been developed to achieve and enhance the detection of cancer, which has not been done with systems currently available. The present study describes the preparation of a dual-image targeting system composed of magnetic iron oxide nanoparticles functionalized with folic acid and rhodamine; nanoparticles synthesis was achieved by a coprecipitation method; the functionalization was carried out by a carbodiimide with folic acid and/or the rhodamine isothiocyanate; conjugates were characterized by spectrometric techniques; toxicity was measured by cell proliferation assay on HeLa cells using progressive concentrations of functionalized nanoparticles. Cellular uptake assay was carried out by competitive assay on HeLa cells. Iron oxide magnetite nanoparticles, modified with folic acid and rhodamine, were successfully synthetized with a particle size lower than 20 nm (TEM), EDS, HRTEM, and XDR showed highly crystalline Fe3O4 nanoparticles. Folic acid and rhodamine were conjugated with high efficiency. A significant selectivity and uptake, facilitated by surface modification of iron oxide nanoparticles with folic acid, were demonstrated. The multifunctional system showed suitable physicochemical and biological properties for cell targeting through folate receptors.

scholarly journals PREPARATION AND CHARACTERIZATION OF MAGNETIC IRON OXIDE NANOPARTICLES

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Dijana Đeorđić ◽  
Marko Bošković ◽  
Marija Perović ◽  
Erzsébet Illés
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
High Efficiency ◽  
Magnetic Behavior ◽  
Magnetic Hyperthermia ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Transmission Electron ◽  
Naoh Solution

The presented experimental research focuses on obtaining iron oxide nanoparticles with high efficiency for magnetic hyperthermia treatments. They were prepared by two different synthesis methods. The first sample was prepared in the modified process of thermal decomposition of Fe precursor in a polyol solution. The second sample was prepared by coprecipitation based on mixing iron salts solution with NaOH solution. Samples were characterized by X-ray powder diffraction, SQUID measurements, transmission electron microscopy and Zetasizer Nano series. The results derived from two systems obtained by different synthesis methods represent valuable knowledge in the fundamental research on magnetic behavior of nanoparticle systems and also a significant contribution in the developing field of application of magnetic hyperthermia.

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