Results 51 to 60 of about 24,751 (224)

Natural South African iron‐rich sand as a functional catalyst in hybrid photocatalytic wet peroxide oxidation technology for the degradation of methyl orange dye pollutant

The Canadian Journal of Chemical Engineering, EarlyView.
This research explored South African iron‐rich sand (SAIRS) as a natural catalyst for light‐mediated wet peroxide oxidation of methyl orange dye in wastewater and at an optimized of conditions of 3500 mg/L catalyst dose, 6 mM H2O2, and pH 2.5, SAIRS achieved 94% methyl orange degradation within 90 min under visible light.
Aaliyah Ebrahim, Stephen Sunday Emmanuel, Alicia Levana Dorling, Shepherd M. Tichapondwa   +3 more
wiley   +1 more source

Convection-enhanced delivery of methotrexate-loaded maghemite nanoparticles [PDF]

, 2011
Enav Corem-Salkmon1, Zvi Ram2,3, Dianne Daniels3,4, Benny Perlstein1, David Last4, Sharona Salomon4, Gregory Tamar4, Ran Shneor4, David Guez4, Shlomo Margel1, Yael Mardor3,41The Institute of Nanotechnology and Advanced Materials, Department of Chemistry,
Benny Perlstein, Dianne Daniels, Shneor R, Daniels D, Tamar G, Last D, Ram Z, Sharona Salomon, Shlomo Margel, Guez D, Salomon S, Zvi Ram, null Enav Corem-Salkmon, Perlstein B, Mardor Y, David Last, Yael Mardor, Corem-Salkmon E, Margel S, Gregory Tamar, Ran Shneor, David Guez   +21 more
core   +1 more source

Green and sustainable synthesis of magnetite from copper slag via citrate complexation for methylene blue dye removal from water

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel, Karen Valencia García, Tania‐Ariadna García‐Mejía, Agileo Hernández‐Gordillo, Rosa‐María Ramírez‐Zamora   +4 more
wiley   +1 more source

Influence of hydroxyapatite on maghemite-to-hematite phase transfer of FeOx-hydroxyapatite composite [PDF]

, 2013
Influence of hydroxyapatite on maghemite-to-hematite phase transfer of FeOx-hydroxyapatite ...
于福海, 张涛, 王军虎, Alexandre Rykov, 金长子, 刘忻, 赵琨峰   +6 more
core  

Magnesioferrita e caminho pedogenético de transformação de óxidos de ferro magnéticos em dois perfis de solo derivados de tufito da região do Alto Paranaíba (MG) Magnesioferrite and pedogenetic transformation pathway of magnetic iron oxides in two soil profiles developing on tuffite of the Alto Paranaíba region, state of Minas Gerais, Brazil

Revista Brasileira de Ciência do Solo, 2005
Solos magnéticos derivados de tufito da região do Alto Paranaíba (MG) têm mineralogia bastante variável, mas são relativamente ricos em óxidos de Fe isoestruturais ao espinélio, mais especificamente: (Ti, Mg)-magnetita e (Ti, Mg)-maghemita.
Fernando Dias da Silva, Paulo Rogério da Costa Couceiro, José Domingos Fabris, Antonio Taranto Goulart, João Carlos Ker   +4 more
doaj   +1 more source

Experimental methods in chemical engineering: Magnetometry

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Magnetometry is a non‐invasive technique to characterize the behaviour of magnetic materials of which the most common contain Fe, Co, and Ni. Vibrating sample magnetometers (VSMs) vibrate samples at a fixed frequency in a static, homogeneous magnetic field to induce a voltage in pick up coils according to Faraday's law of induction.
Michael Claeys, Dominic De Oliveira, Gregory S. Patience, M. Olga Guerrero‐Pérez   +3 more
wiley   +1 more source

As(V) remediation using electrochemically synthesized maghemite nanoparticles [PDF]

, 2009
Maghemite nanoparticles were electrochemically synthesized from environmentally benign solutions in ambient conditions and utilized to remediate As(V) from aqueous solution. The average size and surface area of the maghemite nanoparticles were controlled
Jung, Haeryong, Park, Hosik, Myung, Nosang V., Choi, Heechul   +3 more
core   +1 more source

Magnetic Nanoparticles in Human Cervical Skin

Frontiers in Medicine, 2019
Magnetic iron oxide nanoparticles, magnetite/maghemite, have been identified in human tissues, including the brain, meninges, heart, liver, and spleen.
Kari Murros, Joonas Wasiljeff, Elena Macías-Sánchez, Damien Faivre, Damien Faivre, Lauri Soinne, Jussi Valtonen, Marjatta Pohja, Pekka Saari, Lauri J. Pesonen, Johanna M. Salminen, Johanna M. Salminen   +11 more
doaj   +1 more source

Maghemite nanoparticles and maghemite/silica nanocomposite microspheres as magnetic Fenton catalysts for the removal of water pollutants [PDF]

Applied Catalysis B: Environmental, 2013
Abstract Maghemite nanoparticles (γ-Fe2O3 NP) and maghemite/silica nanocomposite microspheres (γ-Fe2O3/SiO2 MS) have been evaluated as magnetic heterogeneous Fenton catalysts. The catalysts were fully characterized by electronic microscopies, magnetometry, XRD, UV–vis–NIR spectroscopy, and sorption volumetry.
Ferroudj, Nassira, Nzimoto, Jimmy, Davidson, Anne, Talbot, Delphine, Briot, Emmanuel, Dupuis, Vincent, Bée, Agnès, Medjram, Mohamed Salah, Abramson, Sébastien   +8 more
openaire   +2 more sources

Light‐Induced Structural Reorganization of Fe Centers Unlocks High Efficiency of Visible‐Light Photo‐Fenton Water Cleaning Catalyst

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Bimetallic Cu and Fe oxide species supported on porous silica with interparticle mesoporosity act as efficient photo‐Fenton‐like catalysts under visible light. Photogenerated electrons drive the Cu2+/Cu1+ redox cycle. Part of Cu1+ is responsible for the regeneration of the Fe3+/Fe2+ cycle at neutral pH. Light irradiation additionally induces structural
Andraž Šuligoj, Ksenija Maver, Iztok Arčon, Goran Dražić, Nataša Zabukovec Logar, Albin Pintar, Nataša Novak Tušar   +6 more
wiley   +1 more source