A5077867504- X-ray Diffraction in Crystallography
- ZnO doping and properties
- Radioactive element chemistry and processing
- Crystallization and Solubility Studies
- Synthesis and biological activity
- Copper-based nanomaterials and applications
- Electrocatalysts for Energy Conversion
- Phenothiazines and Benzothiazines Synthesis and Activities
- Synthesis and Characterization of Heterocyclic Compounds
- Luminescence Properties of Advanced Materials
- Electrochemical Analysis and Applications
- Electronic and Structural Properties of Oxides
- Catalytic Processes in Materials Science
- Multicomponent Synthesis of Heterocycles
- Advanced Condensed Matter Physics
- Nuclear materials and radiation effects
- Magnetic and transport properties of perovskites and related materials
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced battery technologies research
- Advancements in Solid Oxide Fuel Cells
- Lanthanide and Transition Metal Complexes
- Ionic liquids properties and applications
- Advancements in Battery Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
Jain University
2025
Bhabha Atomic Research Centre
2015-2024
Homi Bhabha National Institute
2016-2024
Command Hospital
2024
Synchrotron soleil
2023-2024
Atal Bihari Vajpayee Institute of Medical Sciences and Dr. Ram Manohar Lohia Hospital
2022-2024
Washington University in St. Louis
2024
Post Graduate Institute of Medical Education and Research
2022-2023
Panjab University
2023
Chandigarh University
2023
The EXAFS technique, which deals with fine structure oscillations observed in the X-ray absorption spectrum of an element from 50 eV to ~700 above its edge, gives precise information regarding short range order and local around particular atomic species material. With advent modern bright synchrotron radiation sources, has emerged be most powerful determination can applied any type material viz. amorphous, polycrystalline, polymers, surfaces solutions etc. Over last few years a comprehensive...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation A. K. Poswal, Agrawal, Yadav, C. Nayak, S. Basu, R. Kane, Garg, D. Bhattachryya, N. Jha, Sahoo; Commissioning first results of scanning type EXAFS beamline (BL-09) at INDUS-2 synchrotron source. AIP Conf. Proc. 24 April 2014; 1591 (1): 649–651. https://doi.org/10.1063/1.4872706 Download citation file: Ris...
The Burstein-Moss (B-M) effect, which suggests that the optical band gap of degenerately doped semiconductors increases when all states close to conduction get populated due shifting an absorption edge higher energy, is important, as it gives a chance obtain different properties for same material. Here, we report our observations similar shift in NixFe2-xO3 nanocomposites function composition with help cyclic voltammetry (CV) and XPS valence (VB) position measurements. (CBE) determined using...
SrZrO3 perovskite (SZP) was synthesized using gel-combustion route and characterized systematically X-ray diffraction time-resolved photoluminescence techniques. A detailed analysis of the optical properties Tb(3+) ions in performed to correlate them with local environment lanthanide this perovskite. Photoluminescence (PL) spectroscopy showed that emission spectrum consists host as well indicating absence complete host-dopant energy transfer. On basis PL decay study it also observed is not...
Studies have been carried out to understand the specific role of alkali charge compensator on luminescence properties an ion (Li+, Na+, and K+) codoped SrWO4:Eu phosphor. The oxidation state europium was found be +3 basis X-ray absorption near edge structure (XANES) measurements. This is first report its kind where opposite effects Li+ Na+/K+ ions photoluminescence intensity observed. codoping enhanced from SrWO4:Eu3+ phosphor while did not. On other hand, lifetime maximum for Na+ sample...
Nuclear power is increasingly viewed as a solution to growing global energy demand and challenges posed by climate change. Large-scale extraction of uranium from seawater considered crucial for sustainable nuclear generation. This paper presents the room temperature synthesis UiO-66-NH2 (Ce) MOF its subsequent postsynthetic modification phosphorus-functionalized UiO-66-NHPOPh2 efficient materials capture. The MOFs were thoroughly characterized FT-IR spectroscopy, pXRD, TGA, SEM, BET surface...
Sc 2 Mo 3 O 12 :Sm 3+ phosphor was explored for white LED with improved CRI and precise color coordinates indoor plant growth. The green emission of monoclinic phase at 80 K diminished on transition to the orthorhombic RT.
Activator-free zinc aluminate (ZA) nanophosphor was synthesized through a sol-gel combustion route, which can be used both as blue-emitting phosphor material and white-emitting material, depending on the annealing temperature during synthesis. The also has potential to in optical thermometry. These fascinating color-tunable emission characteristics linked with various defect centers present inside matrix their changes upon thermal annealing. Various centers, such anionic vacancy, cationic...
In this work, we present structural, electronic, magnetic, mechanical and transport properties of equiatomic quaternary Heusler alloy, CoRhMnGe using both theoretical experimental techniques. A detailed structural analysis is performed X-ray diffraction(XRD) extended absorption fine structure(EXAFS) spectroscopy. The alloy found to crystallize in Y-type structure having space group $F\bar{4}3m$ (\# 216). ab-initio simulation pedict half-metallic ferromagnetic characteristics leading large...
Considering the fact that pyrophosphate-based hosts are in high demand for making highly efficient luminescence materials, we doped two visible lanthanide ions, viz. Sm3+ and Eu3+, Zn2P2O7. Interestingly, it was oberved pure Zn2P2O7 displayed blue-green dual emission on irradiation with ultraviolet light. Emission lifetime spectroscopy shows presence of defects pyrophosphate samples which responsible such emission. DFT calculations clearly pinpointed electronic transitions between defect...
The present work elaborates the high-energy-density, stable, and flexible supercapacitor devices (full-cell configuration with asymmetric setup) based on a two-dimensional tungsten oxide/selenium (2D WO3/Se) nanocomposite. For this, 2D WO3/Se nanocomposite synthesized by hydrothermal method followed air annealing was coated carbon cloth current collector combined separately both 0.1 M H2SO4 1-butyl-3-methyl imidazolium tetrafluoroborate room temperature ionic liquid (BmimBF4 RTIL) as...
Bioconversion of sugarcane molasses to poly(3-hydroxybutyrate-co-3- hydroxyvalerate) by endophytic Bacillus cereus RCL 02Rituparna Das, Arundhati Pal, Amal Kanti Paul
We report a combined theoretical and experimental study of novel quaternary Heusler system CoFeVSb from the view point room temperature spintronics thermoelectric applications. It crystallizes in cubic structure with small DO$_3$-type disorder. The presence disorder is confirmed by synchrotron X-ray diffraction(XRD) extended absorption fine (EXAFS) measurements. Magnetization data reveal high ordering saturation magnetization 2.2 $\mu_B$/f.u. Resistivity measurements reflect half-metallic...
Abstract The hydrogen evolution and nitrite reduction reactions are key to producing green ammonia. Antenna–reactor nanoparticles hold promise improve the performances of these transformations under visible‐light excitation, by combining plasmonic catalytic materials. However, current materials involve compromising either on activity or enhancement also lack control reaction selectivity. Here, we demonstrate that ultralow loadings non‐uniform surface segregation component optimize...
Shortwave infrared (SWIR)-emitting materials have emerged as superior light sources with increasing demand for potential applications in noninvasive analysis, night vision illumination, and medical diagnosis. For developing next-generation SWIR phosphor-converted light-emitting diodes (pc-LEDs), the scarcity of intense blue-light-pumped broadband luminescent poor thermal stability current Ni2+-activated phosphors are ongoing challenges. Here, a blue-light-excitable (440 nm)...
Compression-induced (≤1.01 GPa) phase transformation, local deformations, and pore architecture modifications in zeolitic-imidazole framework (ZIF-8) powder have been investigated, ex situ, using X-ray diffraction, extended absorption fine structure, Fourier transform infrared, positron annihilation lifetime spectroscopy. reduction crystallinity leading to partial amorphization of ZIF-8 is observed be an irreversible phenomenon. The was accompanied by deformations imidazolate ring bonding....
Energy storage and conversion driven by electro- or photocatalyst is a highly exciting field of research, generations effective durable oxide catalysts have received much attention in this field. Here, we report A-site lanthanum-doped oxygen-rich quinary CaLaScRuO6+δ synthesized adopting the solid-state reaction method characterized various techniques such as powder X-ray diffraction, neutron energy-dispersive spectroscopy, inductively coupled plasma-atomic emission spectrometry, Raman...