scholarly journals Flavin-Conjugated Iron Oxide Nanoparticles as Enzyme-Inspired Photocatalysts for Azo Dye Degradation

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 324
Author(s):  
Samer I. Nehme ◽  
Leander Crocker ◽  
Ljiljana Fruk
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Azo Dye ◽  
Ethylenediaminetetraacetic Acid ◽  
Dye Degradation ◽  
Water Remediation ◽  
Oxide Nanoparticles ◽  
Photocatalytic System ◽  
Ethanesulfonic Acid ◽  
Water Pollutant

In this work, a new photocatalytic system consisting of iron oxide nanoparticles (IONPs), coated with a catechol-flavin conjugate (DAFL), is synthesized and explored for use in water remediation. In order to test the efficiency of the catalyst, the photodegradation of amaranth (AMT), an azo dye water pollutant, was performed under aerobic and anaerobic conditions, using either ethylenediaminetetraacetic acid (EDTA) or 2-(N-morpholino)ethanesulfonic acid (MES) as electron donors. Depending on the conditions, either dye photoreduction or photooxidation were observed, indicating that flavin-coated iron-oxide nanoparticles can be used as a versatile enzyme-inspired photocatalysts.

scholarly journals Efficiency in Ofloxacin Antibiotic Water Remediation by Magnetic Zeolites Formed Combining Pure Sources and Wastes

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2137
Author(s):  
Claudia Belviso ◽  
Giulia Guerra ◽  
Maryam Abdolrahimi ◽  
Davide Peddis ◽  
Federica Maraschi ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Red Mud ◽  
Tap Water ◽  
Water Remediation ◽  
Polluted Water ◽  
Oxide Nanoparticles ◽  
Zeolite A ◽  
Adsorption Affinity ◽  
Silica Alumina

In this work, red mud (RM) and spinel iron oxide nanoparticles (SPIONs) were added to pure silica/alumina sources (SAs) and fly ash (FA) with the aim of synthesizing and investigating the magnetic behavior of different zeolites. SAs were used to synthesize zeolite with LTA topology (zeolite A) with the addition of both red mud and spinel iron oxide nanoparticles. FA and RM were mixed to synthesize sodalite whereas only FA with the addition of SPIONs was used to form zeolite with FAU-topology (zeolite X). All the synthetic products showed magnetic properties. However, zeolites with spinel iron oxide nanoparticles (zeolites A and X) showed ferromagnetic-like behavior. Sodalite was characterized by a reduction in saturation magnetization, whereas zeolite A with red mud displayed antiferromagnetic behavior. For the first time, all the synthetic products were tested for polluted water remediation by a persistent emerging contaminant, ofloxacin (OFL) antibiotic. The four zeolite types showed good adsorption affinity towards OFL under actual conditions (tap water, natural pH). All materials were also tested for OFL removal in real waters spiked with OFL 10 µg L−1. Satisfactory recoveries (90–92% in tap water, 83–87% in river water) were obtained for the two zeolites synthesized from industrial waste materials.

Dye degradation property of cobalt and manganese doped iron oxide nanoparticles

2019 ◽  
Vol 9 (8) ◽  
pp. 1823-1832 ◽  
Author(s):  
A. Wahab ◽  
M. Imran ◽  
M. Ikram ◽  
M. Naz ◽  
M. Aqeel ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Dye Degradation ◽  
Oxide Nanoparticles

scholarly journals Iron oxide nanoparticles as heterogeneous electro-Fenton catalysts for the removal of AR18 azo dye

2018 ◽  
Vol 41 (16) ◽  
pp. 2146-2153 ◽  
Author(s):  
Nouha Ben Hafaiedh ◽  
Florence Fourcade ◽  
Nizar Bellakhal ◽  
Abdeltif Amrane
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Azo Dye ◽  
Oxide Nanoparticles

Fabrication of iron oxide nanoparticles from ammonia vapor and their importance in plant growth and dye degradation

2021 ◽  
pp. 1-7
Author(s):  
Devendra Jain ◽  
Himmat Singh Kushwaha ◽  
Kuldeep Singh Rathore ◽  
Bjorn John Stephen ◽  
Hemant Kumar Daima ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Plant Growth ◽  
Iron Oxide Nanoparticles ◽  
Dye Degradation ◽  
Oxide Nanoparticles ◽  
Ammonia Vapor

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.

Sign in / Sign up

Export Citation Format

Share Document