A5036697822- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Advanced Photocatalysis Techniques
- Transition Metal Oxide Nanomaterials
- Advanced Nanomaterials in Catalysis
- Dielectric materials and actuators
- Ferroelectric and Piezoelectric Materials
- Copper-based nanomaterials and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Microwave Dielectric Ceramics Synthesis
- Electrocatalysts for Energy Conversion
- Phase-change materials and chalcogenides
- Catalytic Processes in Materials Science
- Perovskite Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Ga2O3 and related materials
- Water Quality Monitoring and Analysis
- Nanoparticles: synthesis and applications
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Advanced battery technologies research
Central University of Tamil Nadu
2018-2023
In this work, sensing and photocatalytic activities of green synthesized silver nanoparticles (Ag NPs) are investigated. Ag NPs have been by the reduction nitrate (AgNO3) using different leaf extracts. An optimum surface plasmon resonance (SPR) behavior is obtained for neem extracts because presence a high concentration diterpenoids, as evidenced from gas chromatography mass spectroscopy results. The underlying mechanism formation highlighted. in spherical shape exhibit hexagonal crystal...
In this work, we proposed an efficient heterostructure photocatalyst by integrating the ferroelectric BaTiO3 (BTO) layer with semiconductor MoO3 layer, availing polarization of and high generation photoinduced charge carriers in layer. The effect thickness (tMoO3) on photocatalytic efficiency BTO/MoO3 heterostructures is found to be optimum at tMoO3 = 67 nm as varies from 40 800 nm. exhibits a 86% for degradation rhodamine B (RhB) under exposure UV-visible light 60 min. photocatalysis rate...
Abstract In this study, the effect of Ba doping content on photocatalytic activity (Zn 1‐x x O (ZBO); x=0 to 0.2) thin films is investigated. The efficiency ZBO photocatalyst for decolorization Rhodamine B (RhB) found be optimum at x=0.1. Zn 0.9 0.1 film exhibits an 96% irradiation time 60 min. high doped ZnO attributed efficient generation and separation photo‐induced charge carriers as evident from photocurrent measurements. Further, texture oxygen vacancies favor suggested by x‐ray...
In this work, the substrate temperature (TS) effect on microstructure, optical and photocatalytic activity of spray pyrolysis deposited transparent molybdenum trioxide (MoO3) thin films is studied. Microstructure analysis reveals coexistence hexagonal orthorhombic phases when TS ≤ 300 °C existence phase only ≥ 400 °C. The SEM suggests that consist rod spherical shaped grains. dimensions rods spheres are found to be sensitive can correlated strain. band gap increased from 3.06 3.46 eV with...
Abstract In this work, we have investigated the structure, morphology, photoluminescence, photocatalytic and photocurrent properties of ZnO thin films as a function their film thickness (t ) fabricated via ultrasonic spray pyrolysis technique. The X-Ray diffraction patterns exhibited formation polycrystalline wurtzite phase ZnO. Scanning electron microscopy images showed uniform morphology with nanorod structure. photosensitivity efficiency are found to be optimum at t = 1200 nm attributed...
Abstract In this work, a novel approach is adopted to synthesize graphene oxide (GO) and reduced (rGO) from natural precursor Desmostachya bipinnata (halfa grass). GO synthesized by treating ash of halfa grass with aqueous molten KOH. Further, lemon extract rGO. Then rGO active SERS substrates are fabricated flexible adhesive tape. Structural morphological features analyzed. Raman spectrum consists characteristic D G peaks around 1331 1600 cm −1 2D peak 2700 . The variation in I /I ratio,...
Abstract This work shows the fabrication of an efficient ternary heterostructure photocatalyst by integrating ferroelectric BaTiO 3 (BTO) as bottom layer, semiconductor MoO middle layer and plasmonic silver nanoparticles (Ag NPs) top respectively. The /MoO /Ag (BMA) exhibits a higher photodegradation photocatalytic efficiency 100% for rhodamine B (RhB) dye under UV–Visible light illumination 60 min when compared with its binary counterparts (BA) (MA). increased activity in BMA is attributed...
In the present work, molybdenum trioxide (MoO3) films were deposited at a substrate temperature (TS) of 250 °C on glass by spraying precursor solution ammonium heptamolybate tetrahydrate and distilled water using ultrasonic spray pyrolysis technique. XRD Raman analysis confirms presence hexagonal orthorhombic phases MoO3. The AFM images show formation spherical grains with average size 0.9 µm. photoluminescence spectrum film shows two emission peaks around 404 516 nm. former one is...