The Experts below are selected from a list of 1434 Experts worldwide ranked by ideXlab platform
Amin Rostami - One of the best experts on this subject based on the ideXlab platform.
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Tin Derivative sandwich type polyoxometalates supported on nd doped tio2 nanoparticles as efficient and reusable catalysts in the oxidation of sulfides and alcohols
2015Co-Authors: Liela Bahrami, Roushan Khoshnavazi, Amin RostamiAbstract:New nanocomposites, including different loading levels of sandwich-type polyoxometalates [(HOSnIVOH)3(XW9O34)2]n− (X = As (1), P (2) n = 12 and Si (3) n = 14) on Nd-doped TiO2 nanoparticles were prepared by a simple impregnation method. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, Fourier transform infrared (FTIR), and energy-dispersive X-ray spectroscopy. Compounds 1–3 were successfully loaded on Nd-doped crystallized anatase-phase TiO2 nanoparticles of 20–25 nm. Catalytic activities of nanocomposites were examined by carrying out the oxidation of sulfides and alcohols with H2O2. Simple synthesis method, reusability, and low amounts of the heterogeneous catalysts with a slight excess of H2O2 and mild reaction conditions make these oxidation reactions an environmentally benign chemical process.
Roushan Khoshnavazi - One of the best experts on this subject based on the ideXlab platform.
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synthesis and photocatalytic activity assessing of the tio 2 nanocomposites modified by some lanthanide ions and Tin Derivative sandwich type polyoxometalates
2018Co-Authors: Parisa Pazhooh, Roushan Khoshnavazi, Leila Bahrami, Elham NaseriAbstract:New nanocomposites containing sandwich-type polyoxometalate of [(PW9O34)2(HOSnIVOH)3]12− (P2W18Sn3) loaded onto Ln-doped TiO2 (Nd, Sm, Dy, Tb) nanoparticles were synthesized and their catalytic activities were assessed. The Ln–TiO2 nanoparticles and Ln–TiO2/P2W18Sn3 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction, field emission scanning electron microscope, energy dispersive analysis of X-rays spectra and diffuse reflectance spectra. The photocatalytic efficiency of the Ln–TiO2 and Ln–TiO2/P2W18Sn3 were examined in the photodegradation of methyl orange and methylene blue solutions. It was revealed through different characterization techniques that the P2W18Sn3 was successfully loaded on the lanthanide-doped anatase phase TiO2 nanoparticles and the particles diameter were relatively 20–30 nanometers. It was revealed that doping by the lanthanide ions followed by loading of polyoxometalates improves the photocatalytic performance of TiO2 effectively. The effects of operational parameters and the kinetics of photocatalytic degradation under UV light were discussed. The prepared nanocomposites were stable and could be easily separated from the reaction system.
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Tin Derivative sandwich type polyoxometalates supported on nd doped tio2 nanoparticles as efficient and reusable catalysts in the oxidation of sulfides and alcohols
2015Co-Authors: Liela Bahrami, Roushan Khoshnavazi, Amin RostamiAbstract:New nanocomposites, including different loading levels of sandwich-type polyoxometalates [(HOSnIVOH)3(XW9O34)2]n− (X = As (1), P (2) n = 12 and Si (3) n = 14) on Nd-doped TiO2 nanoparticles were prepared by a simple impregnation method. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, Fourier transform infrared (FTIR), and energy-dispersive X-ray spectroscopy. Compounds 1–3 were successfully loaded on Nd-doped crystallized anatase-phase TiO2 nanoparticles of 20–25 nm. Catalytic activities of nanocomposites were examined by carrying out the oxidation of sulfides and alcohols with H2O2. Simple synthesis method, reusability, and low amounts of the heterogeneous catalysts with a slight excess of H2O2 and mild reaction conditions make these oxidation reactions an environmentally benign chemical process.
Liela Bahrami - One of the best experts on this subject based on the ideXlab platform.
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Tin Derivative sandwich type polyoxometalates supported on nd doped tio2 nanoparticles as efficient and reusable catalysts in the oxidation of sulfides and alcohols
2015Co-Authors: Liela Bahrami, Roushan Khoshnavazi, Amin RostamiAbstract:New nanocomposites, including different loading levels of sandwich-type polyoxometalates [(HOSnIVOH)3(XW9O34)2]n− (X = As (1), P (2) n = 12 and Si (3) n = 14) on Nd-doped TiO2 nanoparticles were prepared by a simple impregnation method. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, Fourier transform infrared (FTIR), and energy-dispersive X-ray spectroscopy. Compounds 1–3 were successfully loaded on Nd-doped crystallized anatase-phase TiO2 nanoparticles of 20–25 nm. Catalytic activities of nanocomposites were examined by carrying out the oxidation of sulfides and alcohols with H2O2. Simple synthesis method, reusability, and low amounts of the heterogeneous catalysts with a slight excess of H2O2 and mild reaction conditions make these oxidation reactions an environmentally benign chemical process.
Elham Naseri - One of the best experts on this subject based on the ideXlab platform.
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synthesis and photocatalytic activity assessing of the tio 2 nanocomposites modified by some lanthanide ions and Tin Derivative sandwich type polyoxometalates
2018Co-Authors: Parisa Pazhooh, Roushan Khoshnavazi, Leila Bahrami, Elham NaseriAbstract:New nanocomposites containing sandwich-type polyoxometalate of [(PW9O34)2(HOSnIVOH)3]12− (P2W18Sn3) loaded onto Ln-doped TiO2 (Nd, Sm, Dy, Tb) nanoparticles were synthesized and their catalytic activities were assessed. The Ln–TiO2 nanoparticles and Ln–TiO2/P2W18Sn3 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction, field emission scanning electron microscope, energy dispersive analysis of X-rays spectra and diffuse reflectance spectra. The photocatalytic efficiency of the Ln–TiO2 and Ln–TiO2/P2W18Sn3 were examined in the photodegradation of methyl orange and methylene blue solutions. It was revealed through different characterization techniques that the P2W18Sn3 was successfully loaded on the lanthanide-doped anatase phase TiO2 nanoparticles and the particles diameter were relatively 20–30 nanometers. It was revealed that doping by the lanthanide ions followed by loading of polyoxometalates improves the photocatalytic performance of TiO2 effectively. The effects of operational parameters and the kinetics of photocatalytic degradation under UV light were discussed. The prepared nanocomposites were stable and could be easily separated from the reaction system.
Parisa Pazhooh - One of the best experts on this subject based on the ideXlab platform.
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synthesis and photocatalytic activity assessing of the tio 2 nanocomposites modified by some lanthanide ions and Tin Derivative sandwich type polyoxometalates
2018Co-Authors: Parisa Pazhooh, Roushan Khoshnavazi, Leila Bahrami, Elham NaseriAbstract:New nanocomposites containing sandwich-type polyoxometalate of [(PW9O34)2(HOSnIVOH)3]12− (P2W18Sn3) loaded onto Ln-doped TiO2 (Nd, Sm, Dy, Tb) nanoparticles were synthesized and their catalytic activities were assessed. The Ln–TiO2 nanoparticles and Ln–TiO2/P2W18Sn3 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction, field emission scanning electron microscope, energy dispersive analysis of X-rays spectra and diffuse reflectance spectra. The photocatalytic efficiency of the Ln–TiO2 and Ln–TiO2/P2W18Sn3 were examined in the photodegradation of methyl orange and methylene blue solutions. It was revealed through different characterization techniques that the P2W18Sn3 was successfully loaded on the lanthanide-doped anatase phase TiO2 nanoparticles and the particles diameter were relatively 20–30 nanometers. It was revealed that doping by the lanthanide ions followed by loading of polyoxometalates improves the photocatalytic performance of TiO2 effectively. The effects of operational parameters and the kinetics of photocatalytic degradation under UV light were discussed. The prepared nanocomposites were stable and could be easily separated from the reaction system.