A5012729270- Supercapacitor Materials and Fabrication
- Electrochemical sensors and biosensors
- Graphene research and applications
- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Diamond and Carbon-based Materials Research
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Membrane-based Ion Separation Techniques
- MXene and MAX Phase Materials
- Copper-based nanomaterials and applications
- Nanoparticles: synthesis and applications
- TiO2 Photocatalysis and Solar Cells
- Vaccine Coverage and Hesitancy
- SARS-CoV-2 and COVID-19 Research
- Conducting polymers and applications
- COVID-19 epidemiological studies
- Thermal Radiation and Cooling Technologies
- Force Microscopy Techniques and Applications
- Transition Metal Oxide Nanomaterials
- Silicon Nanostructures and Photoluminescence
- Ferroelectric and Negative Capacitance Devices
- Electrohydrodynamics and Fluid Dynamics
Shiv Nadar University
2016-2023
Ramakrishna Mission Vivekananda Educational and Research Institute
2023
Temperature-dependent photoluminescence (PL) of titanium oxide (TiO2) shows an evolution blue emission when exposed to 50 keV Ar+ ions. The origin observed PL has been examined by X-ray absorption near-edge spectroscopy (XANES) at Ti-K,L and O-K edges, revealing the reduction ligand field splitting owing formation oxygen vacancies (OVs) destroying TiO6 octahedral symmetry. Detailed XANES analyses suggest that fluence (ions/cm2) dependent increase in OVs not only boosts conduction electrons...
Paraquat (PQ) is known to be highly toxic among herbicides and harmful human health upon exposure because it causes various kinds of organ failure affects the nervous system. Nowadays, increasing concentration PQ in water bodies a growing concern many countries. On-site-based detection very needed along with selectivity sensitivity, which can achieved through an electrochemical-based sensor. In this paper, flexible laser-induced graphene (LIG)-based electrode was developed for effective by...
Synthesis of stable hybrid carbon nanostructure for high-performance supercapacitor electrode with long life-cycle electronic and energy storage devices is a real challenge. Here, we present one-step synthesis method to produce conductive boron-doped nanowalls (HCNWs), where sp2-bonded graphene has been integrated over three-dimensional curved wall-like network sp3-bonded diamond. The spectroscopic studies such as X-ray absorption, Raman, photoelectrons clearly reveal the coexistence diamond...
Hybrid solar thermoelectric generators (HSTEGs) have garnered significant research attention recently due to their potential ability cogenerate heat and electricity. In this paper, theoretical experimental investigations of the electrical thermal performance a HSTEG system are reported. order validate model, laboratory scale (based on forced convection cooling) is developed. The consists six generator modules, an heater, stainless steel cooling block. Our analysis shows that capable...
Direct synthesis of a nano-structured carbon hybrid consisting vertically aligned nanograsses on top boron-doped nanocrystalline diamond is demonstrated and the further applied as an electrode material for fabrication supercapacitors. The film combines dual advantages sp2 (carbon nanograss) sp3 (nanocrystalline diamond) bonded carbon, possessing not only excellent electrical characteristics but also exceptional electrochemical stability carbon. As result, specific capacitance as-prepared...
In recent years, metal oxide-based, inexpensive, stable electrodes are being explored as a potent source of high performance, sustainable supercapacitors. Here, the employment industrial waste red mud pseudocapacitive electrode material is reported. Mechanical milling used to produce uniform nanoparticles, which rich in hematite (Fe
This work demonstrates the applicability of red-mud-reduced graphene oxide (RM-rGO) nanocomposites (NCs) for reliable and selective electrochemical (EC) detection arsenic. The new NC material shows excellent anti-interference activity toward arsenic (As3+) ions with cooccurrence other common cations (Cd2+, Cr2+, Zn2+, Pb2+, Hg2+). Especially, is exceptionally As3+ in presence Cu2+ ions, which stated to be main interfering agent EC As3+. Under optimal experimental conditions, displays a high...
Sulfur-doped graphite (S-DG) was synthesized using a sustainable method. Low-cost cellulose fiber and carbon disulfide (CS2) were used as precursors for sulfur (S) sources, respectively, multistep chemical thermochemical synthesis process employed to obtain S-DG. Advanced microscopic spectroscopic techniques porosimetry analyses performed probe the surface morphology, area, microstructures, bonding states of Interestingly, X-ray photoelectron spectroscopy revealed that S loads 3.81 7.02 atom...
Two-dimensional TiS3-nanostructures have been used to successfully remove toxic-industrial pollutants such as methyl-orange(MO) and methyl-blue(MB) from water bodies. with exceptional mobility properties produced using the chemical vapor transport(CVT) technique its photocatalytic capabilities are examined for potential environmental applications. Under infrared(IR) irradiation, TiS3-nanoribbons were evaluated their ability degrade MO MB solutions. reveal significant high disintegration...
Room temperature transformation from anatase (A-TiO2) to rutile (R-TiO2) thin films through an intermediate mixed phase on stainless steel driven by a controlled oxygen flow rate (OFR) is investigated. Such OFR dependent transition confirmed X-ray diffraction and also consistent with absorption spectroscopy at Ti L O K-edges, showing long range ordering in TiO6 octahedral symmetry. photoelectron reveals gradual reduction Ti2O3 and/or TiO phases increasing OFR. Finally, enhanced...
A low-voltage wetting transition from the Cassie–Baxter state to Wenzel was achieved by preparing a needle-like conductive diamond–graphite core–shell nanostructure.
Recently 2D-layered nanostructure-based advanced coatings have proven the new advancement in field of oxidation processes. Effective charge separation is one key parameters to enhance photodegradation ability nanostructures. We report cost-effective hydrothermal synthesis MoS2 thin films on conductive ITO substrates with tunable morphology. Scanning electron microscopy (SEM) studies manifested modulation morphology and assured presence spherical, thread, sheet-like nanostructures under...
Alteration of transport properties any material, especially metal oxides, by doping suitable impurities is not straightforward as it may introduce multiple defects like oxygen vacancies (Vo) in the system. It plays a decisive role controlling resistive switching (RS) performance oxide-based memory devices. Therefore, judicious choice dopants and their atomic concentrations crucial for achieving an optimum Vo configuration. Here, we show that rational designing RS devices with cationic (Ta),...
Phase transition from anatase to rutile for the 70nm TiO2 crystallite has been investigated by annealing at different temperatures followed TDPAC measurement of these crystallites adsorbed with 181Hf tracer. The width peaks in XRD spectra annealed indicates growth temperature. samples upto 823K 4hrs showed no phase transition, except crystallites. However, it same temperature (823K), when longer duration. Annealing shorter duration 1123K transition. tracer on 70 nm is found be polymorphs...
This cross sectional prospective study will be presented through a survey which prepared in the google form stating all respective questions. The circulated among 1000 people from West-Bengal. After completion of survey, information analyzed. How many want to take vaccine and how don’t are main criteria this study. English Language very easy understandable. In demographic analysis, age, gender educational qualification According our research project, team analyze want. Then that age group is...