Results 171 to 180 of about 24,751 (224)

Statement of retraction: insulin-loaded PLGA microspheres for glucose-responsive release. [PDF]

Drug Deliv
europepmc   +1 more source

As(V) adsorption on maghemite nanoparticles [PDF]

Journal of Hazardous Materials, 2009
In this study a novel adsorbent, maghemite nanoparticles (gamma-Fe(2)O(3)), is used for As(V) removal. Maghemite nanoparticles are an exceptional adsorbent material due to its magnetic properties and a good adsorption capacity. The aims of the study were to investigate the suitability of maghemite nanoparticles for As(V) adsorption and to compare ...
, Mika Sillanpää
exaly   +5 more sources

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Silica Coating on Colloidal Maghemite Particles

Journal of Colloid and Interface Science, 1999
Maghemite colloidal particles are coated with a silica layer using a silicon alkoxide as silica precursor. The coating process is studied by electrophoresis, quasi-elastic light scattering, nitrogen adsorption, and infrared spectrometry analyses. The conditions of complete coverage of the iron oxide particles by silica and the nature of the maghemite ...
André Ayral, Christine Menager, Michaela Klotz   +2 more
exaly   +4 more sources

Analysis on variety and characteristics of maghemite

Science China Earth Sciences, 2010
Maghemite (γ-Fe2O3) is a very common mineral at the earth’s surface and also an important material for making music and video tapes. Maghemite is usually synthesized from magnetite under oxidizing conditions after a few hours or a few days below a temperature of 300°C.
Xuegang Mao, Paul Hesse, Jianzhong Jiang   +2 more
exaly   +2 more sources

Interfacial and Rheological Characteristics of Maghemite Aqueous Suspensions

Journal of Colloid and Interface Science, 1998
The interfacial properties and rheological behavior of the maghemite/water system have been investigated in this work. It has been determined that the real pzc and iep values of maghemite immersed in aqueous solution, containing KNO3 as electrolyte, are very close to 6.6.
Pedro Tartaj, C J Serna, M P Morales
exaly   +3 more sources

Silica-Maghemite Nanocomposites

Advanced Materials, 2001
D Petridis, G Hadjipanayis
exaly   +2 more sources

The Center Shift in Mössbauer Spectra of Maghemite and Aluminum Maghemites

Clays and Clay Minerals, 1994
AbstractSynthetic, relatively well-crystallized aluminum-substituted maghemite samples, γ-(Aly·Fe1−y)2O3, with y = 0, 0.032, 0.058, 0.084, 0.106 and 0.151 have been studied by X-ray diffraction and zero-field Mössbauer spectroscopy in the range 8 K to 475 K, and also with an external field of 60 kOe at 4.2 K and 275 K.
G. M. Da Costa, E. De Grave, L. H. Bowen, R. E. Vandenberghe, P. M. A. De Bakker   +4 more
openaire   +1 more source

Photochemical reduction of nanocrystalline maghemite to magnetite

Nanoscale, 2021
We present a method for the photochemical conversion of the inverse spinel iron oxides in which the mixed-valent magnetite phase (Fe3O4) is accessed from the maghemite phase (γ-Fe2O3) via a stable, colloidal nanocrystal-to-nanocrystal transformation.
Hankyeol Jung, Alina M. Schimpf
openaire   +2 more sources