The structural, magnetic and electrical properties of chromium doped calcium ferrite nanoparticles DOI Creative Commons

R. UmashankaraRaja,

H.C. Manjunatha, Y.S. Vidya

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 9, P. 100710 - 100710

Published: Aug. 28, 2024

Calcium ferrite nanoparticles doped with Chromium (10-50 mol %) are synthesized using the solution combustion method, employing citrus Lemon extract as a reducing agent, followed by calcination process at 500oC. Various characterization techniques employed on calcined samples. The Bragg reflections resulting from doping confirm formation of singular orthorhombic calcium phase. Crystallite sizes determined both Scherrer's and W-H plot methods found to be decreases increase in dopant concentration. surface morphology showcases agglomerated irregular shapes sizes, accompanied pores voids. energy band gap increases concentration 2.82 2.93 eV. hysteresis loop analysis provides magnetic parameters including saturation magnetization (Ms), remanence (Mr), coercivity (Hc). As increases, Ms Hc maximum 30 mol% cr3+ CaFe2O4 NPs. Linear frequency-dependent conductivity lower frequencies was observed. presence semicircles low signifies compliance Cole-Cole formula for impedance behavior. Additionally, detailed discussion dielectric properties is presented. Notably, constant 4.2 2.74 an These distinctive attributes position samples suitable candidates memory devices well high-frequency device applications.

Language: Английский

Design of solar-light-driven agglomerated cluster-like transition/rare-earth metal oxide-supported carbon-based nanomaterial for the degradation of azo dye DOI Creative Commons
S. Rubesh Ashok Kumar,

Vasvini Mary D,

G.A. Suganya Josephine

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100563 - 100563

Published: March 11, 2024

Transition and rare-earth metal oxide-supported nanomaterials have ignited an attraction in many fields such as energy, environment etc. In this work, transition/rare-earth carbon-based (TRM) were prepared by hydrothermal method it was characterized UV-DRS, FTIR, XRD, AFM, FE-SEM, HR-TEM, EDAX techniques. Doping levels of oxides on the material impacts photocatalytic degradation efficiency. The activity (PCA) TRM examined, highest percentage observed compared to other reported catalysts. 2 exhibits maximum percentages azo dye under sunlight (99.8%) irradiation. optimization studies conducted, effect pH, catalyst dosage, concentration. optimum condition for pH - 6.51, dosage 10 mg, concentration 5 ppm. kinetic conducted various concentrations (5-20 ppm), rate reaction determined; clearly illustrated that follows a pseudo-first-order kinetics. enhanced PCA due combination material. This is practically helpful degrading environmental pollutants real-time wastewater

Language: Английский

Citations

12
INNOVATIVE SYNTHESIZE OF ZrO2 NANOMATERIAL USING BIODEGRADABLE DRAGON FRUIT PEEL EXTRACTS AND ITS PHOTOCATALYTIC ACTIVITY AGAINST METHYL ORANGE BY UV RADIATION DOI Open Access

Kistan,

V. Kanchana,

S. Mohan

et al.

RASAYAN Journal of Chemistry, Journal Year: 2024, Volume and Issue: 17(01), P. 199 - 206

Published: Jan. 1, 2024

The motivation behind this study is to stress the worth of green amalgamation in development nanomaterials. Regarding declaration, we said that have examined morphological, optical, underlying, and photocatalytic color debasement exercises incorporated ZrO2 nanoparticles as well their biosynthesis by means a response intervened mythical serpent organic product bloom separate. UV-noticeable spectroscopy was utilized identify huge absorbance top at 360 nm. utilization SEM affirmed nanoparticles, which had typical size 17.5 nm, were circular shape. nanoparticles' zirconium (70.88%) oxygen (29.12%) contents checked utilizing energy-dispersive X-beam examination. powder diffraction (XRD) spectra demonstrated crystallinity. While information from HR-TEM shows particles are 33.75 nm size. When movement NPs researched, Methyl Orange showed 54.2 % following 120 minutes UV openness 68.50 corruption an hour half openness, individually. This fresh-out plastic bio-ZrO2 nanoparticle breakdown methyl orange when presented with apparent light. cationic separated engineered shortly 91.8 ability.

Language: Английский

Citations

12
Investigation on the corrosion inhibition efficiency of 2, 4-diphenyl-3-aza bicyclo[3.3.1] nonan-9-one in carbon steel immersed in acidic media DOI Creative Commons
H. Mohamed Kasim Sheit, K.S. Mohan,

K.V. Gunavathy

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100521 - 100521

Published: Feb. 3, 2024

The current research investigates the corrosion resistant efficiency of 2,4-diphenyl-3-azabicyclo [3.3.1] nonan – 9–one (PABN) as inhibitor in carbon steel 0.5M H2SO4 environment through experimental and theoretical approaches. weight loss methodology demonstrates that 0.10 ppm nonan-9-one compound effectively inhibits submerged an acidic with inhibition high 97.2%. polarization studies reveals function at anodic site, influencing kinetics effectively. Impedance spectra under alternating conditions elucidate influence protective film formed by action PABN on electrical behaviour resistance material. This existence composed is affirmed different techniques such SEM, EDX AFM. DFT analysis anticipates interaction patterns surface using quantum chemical calculations, analyzing molecular interactions between molecules steel, providing insights into PABN's inhibitory properties.

Language: Английский

Citations

6
Barium oxide nanorods: Catalyst concentration and surface defects' role in degrading methylene blue organic pollutant DOI Creative Commons

Hanumantagouda Basavanagoudra,

Vijayakumar D. Jangannanavar, Mallikarjun K. Patil

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100578 - 100578

Published: March 22, 2024

In this study, BaO nanorods (NRs) were synthesized with inherent surface defects using the chemical coprecipitation process. The rich oxygen defect NRs exhibited enhanced light sensitivity and effectively interacted organic pollutant methylene blue (MB) dye under UV-light illumination for wastewater treatment. X-ray diffraction (XRD) analysis confirmed highly crystalline tetragonal structure of NRs. Microstructural characteristics examined theoretical approaches such as Debye-Scherrer (DS), Williamson-Hall (W-H), Size-Strain Plot (SSP), revealing an average crystallite size approximately 30 nm. Field emission scanning electron microscopy (FE-SEM) revealed rod-shaped nanorods, particles aligned on top each other. UV–visible absorption studies demonstrated increased optical bandgap in compared to bulk material. Photoluminescence spectroscopy presence traps defects, which aided photodegradation photocatalytic activity was assessed by degrading MB dye. We found that a concentration 150 mg highest degradation efficiency at 85 %.

Language: Английский

Citations

5
Enhancing the strength and structure of Al–Si alloys for biomedical applications through the addition of Sr and Zr grain refiners on secondary AlSi7Mg aluminum alloys DOI Creative Commons

G. Sathiyaseelan,

C. Bhagyanathan,

P Srinath

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100557 - 100557

Published: March 4, 2024

The biomedical industry needs Aluminium alloys with superior corrosion resistance properties for limited applications. use of Al-Si is often seen as non-bio-compatible due to their lower properties. present study aims enhance the such through modification Si phases Strontium (Sr) and Zirconium (Zr) grain size modification. included preparation an aluminium alloy utilizing a mixture different scraps. To refine structure, variable concentrations Sr Zr refiners were added using stir-casting process. qualities, including porosity, density, tensile strength, yield hardness, assessed according ASTM standards. distribution intermetallic compounds investigated by performing microstructural examination scanning electron microscopy (SEM) X-ray diffraction (XRD) techniques, determine impact Zr. results demonstrate that inclusion effectively enhances leading enhanced mechanical secondary alloys. This contributes valuable insights into optimizing refining process aluminum alloys, offering potential advancements in industrial applications, particularly industry, where demand high-performance biocompatible materials steadily increasing.

Language: Английский

Citations

3
Rare earth Gd3+-substituted Co spinel nanoferrites structural, dielectric and magnetic properties DOI Creative Commons

K. Vani,

N. Hari Kumar,

D. Ravinder

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100585 - 100585

Published: March 27, 2024

Gadolinium-doped cobalt ferrite CoGdxFe2-xO4 (CGF) were produced using citrate gel auto-combustion method (x = 0-0.025 at an interval of 0.005). An investigations on the impact Gd3+ ions structural, dielectric, and magnetic properties conducted. The synthesized materials characterized following techniques: X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, ultraviolet visible spectroscopy (UV), impedance (dielectric) analysis, vibrating sample magnetometer (VSM). crystalline size ranging from 48 to 13 nm. Williamson-Hall plots utilized examine lattice strain peak broadening each sample. spectra used confirm phase identification spinel structure. results FTIR examinations show that strong metal oxide bonds can be found in tetrahedral octahedral sites wavelengths 351–376 cm−1 567–574 cm−1, respectively. obtained samples study optical energy bandgap (Eg), which vary 2.01 eV 2.45 they are semiconducting materials.The Maxwell-Wagner model Koop's theory have both been behaviour dielectric properties. constant room temperature 673 K frequency range 50 Hz–1 MHz constant, loss, AC electrical conductivity, impedance. charts how conductivity was impacted by grain boundary mechanisms. In relation applied field 100 kOe, magnetization measured 3K 300K. blocking (TB), exhibits super-paramagnetic behaviour, is approximately 359K according zero-field cooling ZFC cooling. FC experiments carried out 3K–360K under Oe.

Language: Английский

Citations

3
Adsorption of Thorium (IV) from Aqueous Solutions Using Mesoporous TiO2: Kinetics, Isotherm and Thermodynamics DOI Creative Commons

S. Priya,

N. Priyadarshini,

P. Ilaiyaraja

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100638 - 100638

Published: May 12, 2024

Thorium is considered as a promising resource for the production of nuclear power, with its abundance in Earth's crust offering potential sustainable energy generation to fulfill upcoming needs. As fertile material, thorium has capability be converted into fissile uranium-233, which essential sustaining chain reactions. Therefore, extraction from imperative utilization fuel reactors. This study presents synthesis Titanium dioxide mesoporous structure using solvothermal method extracting Th(IV) aqueous solutions. Batch adsorption experiments were carried out evaluate impact solution pH, kinetics, adsorbent dosage, initial concentration, and temperature. The process influenced by showing maximum capacity 101.4 mg per gram TiO2 (MTA) at an concentration 400 L−1 pH 4.0. Results indicate significant correlation pseudo-second-order Freundlich isotherm models. Temperature-dependent investigations revealed that spontaneous room temperature increases higher temperatures (endothermic process). Moreover, highlights rapid kinetics MTA, making it favorable choice upscaling Th(IV). In conclusion, results suggest MTA removal

Language: Английский

Citations

3
Shell thickness influence on the carrier dynamics of InP/ZnS QDs DOI Creative Commons
Yanmin Xu, Lihe Yan, Shaomin Fu

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100579 - 100579

Published: March 27, 2024

InP/ZnS core/shell quantum dots (QDs) have been widely applied in many fields due to their excellent luminescence performance. In this study, the correlation between ZnS shell thickness and ultrafast carrier dynamics QDs was investigated by using femtosecond time-resolved transient absorption spectroscopy photoluminescence techniques. We found that a thicker could confine more carriers InP core, thus effectively weakening interactions core interfacial defect states; further enhanced yields properties QDs.

Language: Английский

Citations

1
Recent Monitoring of Ground Water Quality in and Around Industrial Area of Vellore City at Two Different Monsoon Periods, South India DOI Open Access
M. Sangeetha Priya,

A. Thaminum Ansari,

V. Kanchana

et al.

Oriental Journal Of Chemistry, Journal Year: 2023, Volume and Issue: 39(5), P. 1170 - 1183

Published: Oct. 30, 2023

The present study focuses on the assessment of seasonal variation in groundwater quality and around industrial area Vellore City. samples were collected seasonally are categorized as premonsoon, monsoon post-monsoon during April 2022 March 2023. Eighteen physicochemical parameters assessed for forty eight different along region City at two Monsoon periods. analysis water parameters, including pH, EC, TDS, Ca2+, Mg2+, Na+, K+, Cl-, HCO3-, CO32-, SO42-, heavy metals, was done accordance with BIS WHO standards. results these surveys used to pinpoint geochemical processes taking place this area. According analytical findings, there significant variations inclinations between locations. Water management treatment policy decisions can be made support which also help identify potential health issues.

Language: Английский

Citations

2
Terminal-substituted benzoxazole based Schiff-base Mesogens and their Cu(II) complexes: Synthesis and structural characterization DOI Creative Commons

Ragini Dubey,

Jaya Pandey, Nitin Srivastava

et al.

Chemical Physics Impact, Journal Year: 2024, Volume and Issue: 8, P. 100586 - 100586

Published: April 1, 2024

Three homologous series of 3-hydroxy-4-(((-4-benzoxazol-2-yl)phenyl)imino)methyl)phenyl-4-alkoxybenzoate (with ester linkage) and 5-(alkoxy)-2-(((4-(5-benzoxazol-2-yl)phenyl)imino)methylphenol (without Schiff based derivatives, bearing different substituents at 5 position i.e, 5-methylbenzoxazole, benzoxazole 5-chlorobenzoxazole units the end molecule their Copper complexes were synthesised. The molecular structure all compounds elucidated by spectroscopic techniques such as FT-IR, 1H & 13C NMR mass spectrometry together with elemental analysis. Their phase transition behaviour was investigated differential scanning calorimetry, polarizing optical microscopy X-ray diffraction. structure-property relationships, a variety polar changing spacer from linked to without ester-linked has been studied. Substituents stronger electron-withdrawing properties gave wider mesomorphic temperature domain, in order Cl > CH3 >H.

Language: Английский

Citations

0