The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
S Jindasuwan - One of the best experts on this subject based on the ideXlab platform.
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sol gel processed Iron Oxide silica nanocomposite films as room temperature humidity sensors
Sensors and Actuators B-chemical, 2005Co-Authors: R Tongpool, S JindasuwanAbstract:Abstract Iron Oxide–silica nanocomposite films have been fabricated using sol–gel process and spin coating technique. Iron Oxide and silica were segregated. As Si content in the films increase, the films were more compact. The Iron Oxide films calcined at 400 °C were hematite (α-Fe2O3), but in the presence of silica, Iron Oxide is composed of hematite and magnetite. The response of Iron Oxide to humidity is improved tremendously in the presence of small amount of silica. The films containing 90:10 Fe:Si show the highest sensitivity. The response is fast and reversible at the operating temperature of 30 °C.
Changzhong Jiang - One of the best experts on this subject based on the ideXlab platform.
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recent progress in magnetic Iron Oxide semiconductor composite nanomaterials as promising photocatalysts
Nanoscale, 2015Co-Authors: Changzhong Jiang, V A L RoyAbstract:Photocatalytic degradation of toxic organic pollutants is a challenging tasks in ecological and envIronmental protection. Recent research shows that the magnetic Iron Oxide–semiconductor composite photocatalytic system can effectively break through the bottleneck of single-component semiconductor Oxides with low activity under visible light and the challenging recycling of the photocatalyst from the final products. With high reactivity in visible light, magnetic Iron Oxide–semiconductors can be exploited as an important magnetic recovery photocatalyst (MRP) with a bright future. On this regard, various composite structures, the charge-transfer mechanism and outstanding properties of magnetic Iron Oxide–semiconductor composite nanomaterials are sketched. The latest synthesis methods and recent progress in the photocatalytic applications of magnetic Iron Oxide–semiconductor composite nanomaterials are reviewed. The problems and challenges still need to be resolved and development strategies are discussed.
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Magnetic Iron Oxide nanoparticles: Synthesis and surface functionalization strategies
Nanoscale Research Letters, 2008Co-Authors: Wei Wu, Quanguo He, Changzhong JiangAbstract:Surface functionalized magnetic Iron Oxide nanoparticles (NPs) are a kind of novel functional materials, which have been widely used in the biotechnology and catalysis. This review focuses on the recent development and various strategies in preparation, structure, and magnetic properties of naked and surface functionalized Iron Oxide NPs and their corresponding application briefly. In order to implement the practical application, the particles must have combined properties of high magnetic saturation, stability, biocompatibility, and interactive functions at the surface. Moreover, the surface of Iron Oxide NPs could be modified by organic materials or inorganic materials, such as polymers, biomolecules, silica, metals, etc. The problems and major challenges, along with the directions for the synthesis and surface functionalization of Iron Oxide NPs, are considered. Finally, some future trends and prospective in these research areas are also discussed.
Ajeet K. Srivastav - One of the best experts on this subject based on the ideXlab platform.
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Antioxidant efficacy of chitosan/graphene functionalized superparamagnetic Iron Oxide nanoparticles
Journal of Materials Science: Materials in Medicine, 2018Co-Authors: Vikram Hastak, Suresh Bandi, Sanjay Kashyap, Shilpi Singh, Suaib Luqman, Mangesh Lodhe, D. R. Peshwe, Ajeet K. SrivastavAbstract:The antioxidant potential of superparamagnetic Iron Oxide nanoparticles functionalized with chitosan and graphene were examined in the present work. Coprecipitation technique was followed for the synthesis of Iron Oxide nanoparticles. Graphene-Iron Oxide nanocomposites were synthesized by mechanical mixing followed by the heat treatment at moderate temperature. The chitosan coated Iron Oxide nanoparticles were prepared by dispersing nanoparticles in chitosan solution. The nanoparticles/nanocomposites were characterized using XRD, SEM, TEM and HAADF-STEM for phase structure, morphology and elemental analysis. The superparamagnetic behavior of nanoparticles/nanocomposites were confirmed by magnetic measurements using vibrating sample magnetometry. Antioxidant efficacy of these nanoparticles/nanocomposites were investigated in terms of free radical scavenging and reducing potential using an array of in vitro assay system. Ferric reducing antioxidant power (FRAP) and 2,2′-diphenyl-1-picrylhydrazyl (DPPH) were used for the antioxidant capacity. The investigation suggests that the graphene improves the antiradical response of Iron Oxide nanoparticles at higher concentration which is almost comparable to the ascorbic acid used as standard.
R Tongpool - One of the best experts on this subject based on the ideXlab platform.
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sol gel processed Iron Oxide silica nanocomposite films as room temperature humidity sensors
Sensors and Actuators B-chemical, 2005Co-Authors: R Tongpool, S JindasuwanAbstract:Abstract Iron Oxide–silica nanocomposite films have been fabricated using sol–gel process and spin coating technique. Iron Oxide and silica were segregated. As Si content in the films increase, the films were more compact. The Iron Oxide films calcined at 400 °C were hematite (α-Fe2O3), but in the presence of silica, Iron Oxide is composed of hematite and magnetite. The response of Iron Oxide to humidity is improved tremendously in the presence of small amount of silica. The films containing 90:10 Fe:Si show the highest sensitivity. The response is fast and reversible at the operating temperature of 30 °C.
Marc Port - One of the best experts on this subject based on the ideXlab platform.
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recent advances in Iron Oxide nanocrystal technology for medical imaging
Advanced Drug Delivery Reviews, 2006Co-Authors: Claire Corot, Philippe Robert, Jeanmarc Idee, Marc PortAbstract:Superparamagnetic Iron Oxide particles (SPIO and USPIO) have a variety of applications in molecular and cellular imaging. Most of the recent research has concerned cellular imaging with imaging of in vivo macrophage activity. According to the Iron Oxide nanoparticle composition and size which influence their biodistribution, several clinical applications are possible: detection liver metastases, metastatic lymph nodes, inflammatory and/or degenerative diseases. USPIO are investigated as blood pool agents with T1 weighted sequence for angiography, tumour permeability and tumour blood volume or steady-state cerebral blood volume and vessel size index measurements using T2⁎ weighted sequences. Stem cell migration and immune cell trafficking, as well as targeted Iron Oxide nanoparticles for molecular imaging studies, are at the stage of proof of concept, mainly in animal models.
