Exploiting GISAXS for the Study of a 3D Ordered Superlattice of Self-Assembled Colloidal Iron Oxide Nanocrystals

2012 ◽  
Vol 12 (11) ◽  
pp. 5505-5512 ◽  
Author(s):  
Davide Altamura ◽  
Václav Holý ◽  
Dritan Siliqi ◽  
Indira Chaitanya Lekshmi ◽  
Concetta Nobile ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Colloidal Iron ◽  
Self Assembled ◽  
Colloidal Iron Oxide

A PEEM STUDY OF SMALL AGGLOMERATES OF COLLOIDAL IRON OXIDE NANOCRYSTALS

2002 ◽  
Vol 09 (01) ◽  
pp. 437-440 ◽  
Author(s):  
F. NOLTING ◽  
J. LÜNING ◽  
J. ROCKENBERGER ◽  
J. HU ◽  
A. P. ALIVISATOS
Keyword(s):  
Iron Oxide ◽  
Absorption Spectra ◽  
Scaling Laws ◽  
Average Diameter ◽  
Colloidal Iron ◽  
X Ray ◽  
Spatially Resolved ◽  
Particle Size And Shape ◽  
Colloidal Iron Oxide ◽  
X Ray Absorption

A common limitation in nanostructure research is often the requirement to perform experiments on ensembles of nanoparticles, therefore averaging over inherent distributions with respect to particle size and shape, chemical composition, crystallinity and defect structure. This limitation can be overcome by studying the properties of a single nanostructure individually, which will allow one to truly correlate scaling laws of material properties with changes in size. Here we report the first experiments to explore the feasibility of spectromicroscopy using a photoemission electron microscope (PEEM) to record the X-ray absorption spectra of single nanocrystals. Colloidal iron oxide nanocrystals with an average diameter and standard deviation of 13 nm and 2 nm, respectively, were deposited on graphite (HOPG) forming small islands of agglomerated γ- Fe 2 O 3 nanocrystals (4–30 particles) as determined by scanning electron microscopy. Spatially resolved soft X-ray absorption spectra at the Fe L 3,2 edges of these individual islands were recorded with the PEEM2 instrument of the Advanced Light Source (ALS).

COLLOIDAL IRON OXIDE TRANSPORT IN SANDY SOIL INDUCED BY EXCESSIVE PHOSPHORUS APPLICATION 1

Soil Science ◽  
2003 ◽  
Vol 168 (9) ◽  
pp. 617-626 ◽  
Author(s):  
M. K. Zhang ◽  
Z. L. He ◽  
D. V. Calvert ◽  
P. J. Stoffella
Keyword(s):  
Iron Oxide ◽  
Sandy Soil ◽  
Colloidal Iron ◽  
Colloidal Iron Oxide ◽  
Phosphorus Application

Adsorption of poly(sodium(4)styrenesulfonate) on colloidal iron oxide particles

1996 ◽  
Vol 128 (1-2) ◽  
pp. 269-275 ◽  
Author(s):  
P.C. Sontum ◽  
A. Nöevestad ◽  
A.K. Fahlvik ◽  
H.G. Gundersen
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Particles ◽  
Colloidal Iron ◽  
Oxide Particles ◽  
Colloidal Iron Oxide

Colloidal iron oxide slime coatings and galena particle flotation

2001 ◽  
Vol 14 (5) ◽  
pp. 487-497 ◽  
Author(s):  
P. Bandini ◽  
C.A. Prestidge ◽  
J. Ralston
Keyword(s):  
Iron Oxide ◽  
Colloidal Iron ◽  
Colloidal Iron Oxide

scholarly journals Conquering the Dark Side: Colloidal Iron Oxide Nanoparticles

ACS Nano ◽  
2009 ◽  
Vol 3 (12) ◽  
pp. 3917-3926 ◽  
Author(s):  
Angana Senpan ◽  
Shelton D. Caruthers ◽  
Ilsu Rhee ◽  
Nicholas A. Mauro ◽  
Dipanjan Pan ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Dark Side ◽  
Oxide Nanoparticles ◽  
Colloidal Iron ◽  
Colloidal Iron Oxide

Magnetoactive Superhydrophobic Foams for Oil-Water Separation

2012 ◽  
Vol 77 ◽  
pp. 159-164 ◽  
Author(s):  
Paola Calcagnile ◽  
Despina Fragouli ◽  
Ilker S. Bayer ◽  
George C. Anyfantis ◽  
Athanassia Athanassiou
Keyword(s):  
Iron Oxide ◽  
Superparamagnetic Iron Oxide ◽  
Water Repellent ◽  
Oil Absorption ◽  
Absorption Mechanism ◽  
Colloidal Iron ◽  
Water Separation ◽  
Magnetically Actuated ◽  
Oil Water Separation ◽  
Colloidal Iron Oxide

A novel composite material for the efficient separation of oil from water is presented. It is based on polyurethane (PU) foams modified with colloidal superparamagnetic iron oxide nanoparticles (NPs) in their whole volume and sub-micrometer polytetrafluoroethylene (PTFE) particles on their surface. The hydrophobic and oleophobic original foam becomes water-repellent and oil-absorbing due to the presence of the PTFE particles on its surface. The oil absorption rate is significantly increased by the presence of the colloidal iron oxide NPs. Detailed analysis demonstrates that the NP capping molecules play a significant role in the oil absorption mechanism. Furthermore, the treated foams can be magnetically actuated, and be moved towards oil polluted waters by a weak magnet. As a result, they can absorb the oil contaminants from the water surface, purifying it.

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