Etching synthesis of iron oxide nanoparticles for adsorption of arsenic from water

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15900-15910 ◽  
Author(s):  
Wei Cheng ◽  
Weidong Zhang ◽  
Lijuan Hu ◽  
Wei Ding ◽  
Feng Wu ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxide Nanoparticles ◽  
Etching Method

Nano-iron oxide prepared by an etching method is good adsorbent for arsenic removal from water.

scholarly journals Ultra-long magnetic nanochains for highly efficient arsenic removal from water

2014 ◽  
Vol 2 (32) ◽  
pp. 12974-12981 ◽  
Author(s):  
Gautom Kumar Das ◽  
Cecile S. Bonifacio ◽  
Julius De Rojas ◽  
Kai Liu ◽  
Klaus van Benthem ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxide Nanoparticles ◽  
Highly Efficient

Ultralong chains of iron oxide nanoparticles make excellent adsorbents of arsenic in water.

scholarly journals Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2818
Author(s):  
Md Musfiqur Rahman ◽  
Islam Hafez ◽  
Mehdi Tajvidi ◽  
Aria Amirbahman
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Cellulose Nanofibrils ◽  
Fixed Bed ◽  
Optimal Operation ◽  
Oxide Nanoparticles ◽  
Order Kinetic ◽  
Order Kinetic Model ◽  
Minimal Mass

The application and optimal operation of nanoparticle adsorbents in fixed-bed columns or industrial-scale water treatment applications are limited. This limitation is generally due to the tendency of nanoparticles to aggregate, the use of non-sustainable and inefficient polymeric resins as supporting materials in fixed-bed columns, or low adsorption capacity. In this study, magnesium-doped amorphous iron oxide nanoparticles (IONPs) were synthesized and immobilized on the surface of cellulose nanofibrils (CNFs) within a lightweight porous aerogel for arsenic removal from water. The IONPs had a specific surface area of 165 m2 g−1. The IONP-containing CNF aerogels were stable in water and under constant agitation due to the induced crosslinking using an epichlorohydrin crosslinker. The adsorption kinetics showed that both As(III) and As(V) adsorption followed a pseudo second-order kinetic model, and the equilibrium adsorption isotherm was best fitted using the Langmuir model. The maximum adsorption capacities of CNF-IONP aerogel for As(III) and As(V) were 48 and 91 mg As g-IONP−1, respectively. The optimum IONP concentration in the aerogel was 12.5 wt.%, which resulted in a maximum arsenic removal, minimal mass loss, and negligible leaching of iron into water.

scholarly journals Arsenic Removal from Water Using Flame-Synthesized Iron Oxide Nanoparticles with Variable Oxidation States

2013 ◽  
Vol 47 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Aamir D. Abid ◽  
Masakazu Kanematsu ◽  
Thomas M. Young ◽  
Ian M. Kennedy
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxidation States ◽  
Oxide Nanoparticles

One-step synthesis of magnetic composites of cellulose@iron oxide nanoparticles for arsenic removal

2013 ◽  
Vol 1 (3) ◽  
pp. 959-965 ◽  
Author(s):  
Xiaolin Yu ◽  
Shengrui Tong ◽  
Maofa Ge ◽  
Junchao Zuo ◽  
Changyan Cao ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxide Nanoparticles ◽  
Magnetic Composites ◽  
One Step

Magnetic iron oxide nanoparticles prepared by electrical wire explosion for arsenic removal

2013 ◽  
Vol 246 ◽  
pp. 572-574 ◽  
Author(s):  
Kyungsun Song ◽  
Wonbaek Kim ◽  
Chang-Yul Suh ◽  
Dongbok Shin ◽  
Kyung-Seok Ko ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Arsenic Removal ◽  
Oxide Nanoparticles ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Wire Explosion ◽  
Electrical Wire ◽  
Magnetic Iron Oxide ◽  
Electrical Wire Explosion

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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