P
Pushan Ayyub
Researcher at Tata Institute of Fundamental Research
Publications - 173
Citations - 5546
Pushan Ayyub is an academic researcher from Tata Institute of Fundamental Research. The author has contributed to research in topics: Thin film & Nanocrystalline material. The author has an hindex of 36, co-authored 173 publications receiving 5130 citations. Previous affiliations of Pushan Ayyub include University of Florida & Institute of Physics, Bhubaneswar.
Papers
More filters
Journal ArticleDOI
The role of surface O-vacancies in the photocatalytic oxidation of Methylene Blue by Zn-doped TiO2: A Mechanistic approach
Ramya G. Nair,Shyamalava Mazumdar,Brindaban Modak,Rudheer D. Bapat,Pushan Ayyub,Kaustava Bhattacharyya +5 more
TL;DR: In this article, a combination of techniques such as X-ray diffraction, electron microscopy, vibrational spectroscopy, diffuse reflectance, and x-ray photoelectron spectrography (XPS) were used to establish that Zn gets substitutionally doped in the Ti sites of a single phase, anatase structure and hence forth possess O-vacancies in order to maintain the lattice charge neutrality.
Journal ArticleDOI
Role of annealing conditions on the ferromagnetic and dielectric properties of La2NiMnO6
Farheen N. Sayed,Srungarpu N. Achary,Onattu D. Jayakumar,Sudhanshu K. Deshpande,P. S. R. Krishna,Sriparna Chatterjee,Pushan Ayyub,A. K. Tyagi +7 more
TL;DR: In this article, a preformed La2NiMnO6 (LNMO) was annealed in air, oxygen, or N2 atmosphere and characterized by powder x-ray diffraction (XRD), neutron diffraction, superconducting quantum interference device magnetometry, and dielectric analysis.
Journal ArticleDOI
Effect of Mo-Incorporation in the TiO2 Lattice: A Mechanistic Basis for Photocatalytic Dye Degradation
Kaustava Bhattacharyya,Jerina Majeed,Krishna Kishore Dey,Pushan Ayyub,A. K. Tyagi,Shyamala R. Bharadwaj +5 more
TL;DR: In this paper, the photocatalyst material was characterized in detail using X-ray diffraction, Raman spectroscopy, diffuse reflectance (DR-UV-Vis spectrograph) and electron microscopy using a model rhodamine-B dye reaction using both UV and visible irradiation sources.
Journal ArticleDOI
Vibrational spectroscopic study of ferroelectric SbNbO4, antiferroelectric BiNbO4, and their solid solutions.
TL;DR: The nature of the variations of lattice and internal frequencies with changes in A 3+ -ion concentration is qualitatively discussed with particular reference to the ferroelectric soft mode.
Journal ArticleDOI
Preparation and characterization of ultrafine TiO2 particles in reverse micelles by hydrolysis of titanium di-ethylhexyl sulfosuccinate
TL;DR: In this article, the authors describe the synthesis and characterization of ultrafine TiO2 particles (in both anatase and rutile form) produced by a chemical reaction within the aqueous core of a water-in-oil microemulsion.