Photocatalytic Degradation of Citric Acid in Wastewater in Presence of Visible Light by La:Ni:TiO2 Nanocomposite
Azad Kumar,
Gajanan Pandey
Issue:
Volume 5, Issue 5, October 2017
Pages:
61-68
Received:
4 July 2017
Accepted:
13 July 2017
Published:
16 September 2017
Abstract: In this study, nanocomposites of La:Ni:TiO2 nanocomposite was prepared by the co-precipitation method. The material was found in the nano dimension by the SEM and TEM analysis. The rutile and anatase both phases were present in XRD analysis of the synthesized materials. The particle size was found 24 and 82 nm in the case of La:Ni:TiO2 nanocomposite and pure Titania respectively. The surface area of Titania and La:Ni:TiO2 nanocomposite were found 6.4 and 43.2 m2/g. The band gap energy of Titania and La:Ni:TiO2 nanocomposite were found 3.2 eV and 3.0 eV respectively. The photodegradation of Citric Acid was investigated at different parameters such as temperature, concentration, pH of the reaction mixture, the dose of photocatalyst and time of illumination of visible light. The photodegradation of Citric Acid occurs 60-90% in presence of La:Ni:TiO2 nanocomposite, while in presence of titania 10-18%. It is found that photodegradation of Citric Acid follows the first order kinetics.
Abstract: In this study, nanocomposites of La:Ni:TiO2 nanocomposite was prepared by the co-precipitation method. The material was found in the nano dimension by the SEM and TEM analysis. The rutile and anatase both phases were present in XRD analysis of the synthesized materials. The particle size was found 24 and 82 nm in the case of La:Ni:TiO2 nanocomposit...
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Spin-Dependent Currents in Magnet/Normal Metal Based Magnetic Nanostructures
Andrii Korostil,
Mykola Krupa
Issue:
Volume 5, Issue 5, October 2017
Pages:
69-80
Received:
10 October 2017
Accepted:
24 October 2017
Published:
27 November 2017
Abstract: The spin transport through and near interfaces have been studied in magnet/normal metal based multilayer magnetic nanostructures in magneto-static and magneto-dynamic cases. Its features and accompanying effects, such as the magnetoresistance or the magnetic precession induced spin pumping and spin accumulation in adjacent normal metal are determined by the spin-dependent scattering on the interface. These effects are governed by the entire spin-coherent region that is limited in size by spin-flip relaxation processes and can be controlled by the spin-polarized current of different origin including the spin Hall effect. Conditions of realization of the mentioned spin currents in the multilayer magnetic nanostructures are studied.
Abstract: The spin transport through and near interfaces have been studied in magnet/normal metal based multilayer magnetic nanostructures in magneto-static and magneto-dynamic cases. Its features and accompanying effects, such as the magnetoresistance or the magnetic precession induced spin pumping and spin accumulation in adjacent normal metal are determin...
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