scholarly journals Surface Modification of PES Hollow Fiber Membranes using Iron Oxide Particles for Water Treatment Does Particle Size Really Matter?

2021 ◽  
Vol 17 (5) ◽  
pp. 621-635
Author(s):  
Nadiene Salleha Mohd Nawi ◽  
Lau Woei Jye ◽  
Norhaniza Yusof ◽  
Noresah Said ◽  
Ahmad Fauzi Ismail
Keyword(s):  
Particle Size ◽  
Surface Modification ◽  
Iron Oxide ◽  
Water Treatment ◽  
Polymeric Membranes ◽  
Particle Sizes ◽  
Particle Type ◽  
Iron Oxide Particles ◽  
Oxide Particles

Factors such as particle type and its loading have been previously studied in tailoring the efficiency of particles-modified polymeric membranes for water treatment. However, the role of particle sizes in membrane modification is often overlooked. 

Understanding the impacts of sodium silicate on water quality and iron oxide particles

2019 ◽  
Vol 5 (8) ◽  
pp. 1360-1370 ◽  
Author(s):  
Bofu Li ◽  
Benjamin F. Trueman ◽  
Mohammad Shahedur Rahman ◽  
Yaohuan Gao ◽  
Yuri Park ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Iron Oxide ◽  
Water Treatment ◽  
Sodium Silicate ◽  
Bacterial Growth ◽  
Drinking Water Treatment ◽  
Iron Oxide Particles ◽  
Oxide Particles

Silicates represent an alternative drinking water treatment for colour and turbidity due to iron. They may avoid the drawbacks of polyphosphates: increased lead solubility, the potential for increased bacterial growth, and phosphorus in wastewater.

The role of reactive surface sites and complexation by humic acids in the interaction of clay mineral and iron oxide particles

2004 ◽  
Vol 35 (3) ◽  
pp. 257-267 ◽  
Author(s):  
Etelka Tombácz ◽  
Zsuzsanna Libor ◽  
Erzsébet Illés ◽  
Andrea Majzik ◽  
Erwin Klumpp
Keyword(s):  
Iron Oxide ◽  
Clay Mineral ◽  
Humic Acids ◽  
Iron Oxide Particles ◽  
Surface Sites ◽  
Reactive Surface ◽  
Oxide Particles

Biomimetic synthesis of superparamagnetic iron oxide particles in proteins

2003 ◽  
Vol 18 (6) ◽  
pp. 1309-1313 ◽  
Author(s):  
Arvind Sinha ◽  
Suprabha Nayar ◽  
G. V. S. Murthy ◽  
P. A. Joy ◽  
V. Rao ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Quaternary Structure ◽  
Inorganic Ions ◽  
Superparamagnetic Iron Oxide ◽  
Egg White ◽  
Biomimetic Synthesis ◽  
Iron Oxide Particles ◽  
Superparamagnetic Iron Oxide Particles ◽  
Oxide Particles

Matrix-mediated in situ synthesis of monodispersed magnetite and maghemite nanoparticles (2–16 nm) was carried out using the cavities present in gels of globular proteins such as egg white and bovine serum albumin. Under stringent conditions, spatial-charge-distribution-assisted molecular recognition of proteins for inorganic ions led to the site- and polymorph-specific synthesis of superparamagnetic iron oxide particles. A transformation from magnetite to maghemite as a nucleating phase could be observed by partially denaturing the egg white protein, signifying the delicate role of quaternary structure of proteins under different reaction conditions, in determining the size and shape of the polymorph.

Magnetic behavior of coated superparamagnetic iron oxide nanoparticles in ferrofluids

2001 ◽  
Vol 676 ◽  
Author(s):  
W. Voit ◽  
D. K. Kim ◽  
W. Zapka ◽  
M. Muhammed ◽  
K. V. Rao
Keyword(s):  
Particle Size ◽  
Iron Oxide ◽  
Superparamagnetic Iron Oxide ◽  
Magnetic Behavior ◽  
Blocking Temperature ◽  
Iron Oxide Particles ◽  
Physical Particle ◽  
Superparamagnetic Iron Oxide Particles ◽  
Oxide Particles ◽  
Co Precipitation

ABSTRACTWe present a study on the magnetic behavior of nanosized iron oxide particles coated with different surfactants (sodium oleate, PVA and starch) in a ferrofluid. The effect of the coating material, and different particle concentrations in the ferrofluid have been magnetically investigated to determine the effective magnetic particle size and possible interaction. The superparamagnetic iron oxide particles, synthesized by a controlled co-precipitation technique, are found to contain magnetite (Fe3O4) as a main phase with a narrow physical particle size distribution between 6 and 8 nm. The mean effective magnetic size of the particles in different ferrofluid systems are estimated to be around 4-5 nm which is smaller than the physical particle size. On a 10% dilution in the starch coated ferrofluid we observe a decrease in the blocking temperature.

Surface Modification of Ultrafine Magnetic Iron Oxide Particles

2002 ◽  
Vol 14 (8) ◽  
pp. 3226-3228 ◽  
Author(s):  
A. B. Bourlinos ◽  
A. Bakandritsos ◽  
V. Georgakilas ◽  
D. Petridis
Keyword(s):  
Surface Modification ◽  
Iron Oxide ◽  
Iron Oxide Particles ◽  
Magnetic Iron Oxide ◽  
Oxide Particles

scholarly journals Aqueous one-pot synthesis of well-defined zwitterionic diblock copolymers by RAFT polymerization: an efficient and environmentally-friendly route to a useful dispersant for aqueous pigments

2021 ◽  
Vol 23 (3) ◽  
pp. 1248-1258
Author(s):  
Shannon M. North ◽  
Steven P. Armes
Keyword(s):  
Iron Oxide ◽  
Diblock Copolymers ◽  
Raft Polymerization ◽  
Environmentally Friendly ◽  
Iron Oxide Particles ◽  
One Pot ◽  
One Pot Synthesis ◽  
Highly Effective ◽  
Oxide Particles

An atom-efficient, wholly aqueous one-pot synthesis of zwitterionic diblock copolymers has been devised. Such copolymers can serve as highly effective aqueous dispersants for nano-sized transparent yellow iron oxide particles.

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