Electrochemical sensor and photocatalytic studies of ferrite nanoparticle using different fuels via green approach DOI Creative Commons
N. Raghavendra,

H.P. Nagaswarupa,

Shashi Shekhar T R

et al.

Sensing Technology, Journal Year: 2024, Volume and Issue: 2(1)

Published: April 15, 2024

The solution combustion process and environmentally acceptable green fuels, including plant root extracts from Flacortia indica Aloe vera, were used to make a nanostructured nickel ferrite (NiFe2O4). We X-ray diffraction (XRD) find the crystallinity of produced nanoparticles, Field Emission scanning electron microscopy (FE-SEM) examine surfaces, energy dispersive (EDAX) elements. NiFe2O4 sample was subjected electrochemical testing, which included electrostatic charge discharge (GCD) experiments with electrodes submerged in 0.1 M HCl electrolyte measurements AC impedance. build chemical sensors for arsenic trioxide mercuric acetate. Thanks their capacity be magnetically retrieved, aloe vera-mediated NPs degraded 98.4 percent AR-88 dye after 90 min, whereas extract under UV light 84.4 percent. increased emphasis on research that this comparison study sparked led production high-quality, repeatable materials made bio-composite reagents are non-toxic friendly.

Language: Английский

Synergistic effect of ZnO nanoparticles with Cu2+ doping on antibacterial and photocatalytic activity DOI
Amitender Singh, Fayu Wan, Kavita Yadav

et al.

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 157, P. 111425 - 111425

Published: Sept. 12, 2023

Language: Английский

Citations

43
Williamson-Hall strain analysis, cation distribution and magnetic interactions in Dy3+ substituted zinc-chromium ferrite DOI Creative Commons

Ravikant S. Shitole,

Vinod K. Barote,

S. B. Kadam

et al.

Journal of Magnetism and Magnetic Materials, Journal Year: 2023, Volume and Issue: 588, P. 171468 - 171468

Published: Nov. 2, 2023

In the present work, a detailed investigation has been carried out on nanocrystalline particles of ZnCr0.5DyxFe1.5-xO4 with x = 0.0, 0.025, 0.05, 0.075 and 0.1 to estimate intrinsic strain through Williamson-Hall (W-H) analysis. The results were compared those obtained from Scherrer equation Rietveld refinement. Bertaut method was used cation distribution spinel ferrite. structural, morphological magnetic properties studied by X-ray diffraction (XRD), scanning electron microscopy, transmission microscopy vibrating sample magnetometer. XRD analysis confirmed cubic structure prepared samples without presence any impurity secondary phases. Selected area IR measurements gives further confirmation observation. Lattice constant increased 8.398 8.409 Å lattice 2.96 × 10−4 5.88 increase in Dy substitution. Considering that mechanism play major role for controlling therefore these precisely evaluated reliable methodology using magnetization data. Saturation system 13.15 27.6 emu/g coercivity 42 672 Oe determined data are supported studies. mechanisms involved discussed manuscript.

Language: Английский

Citations

32
Investigation of structural, elastic and magnetic properties of Cu2+ ions substituted cobalt nano ferrites DOI
Atul Thakur, Ritesh Verma, Fayu Wan

et al.

Journal of Magnetism and Magnetic Materials, Journal Year: 2023, Volume and Issue: 581, P. 170980 - 170980

Published: June 30, 2023

Language: Английский

Citations

31
Impact of silver substitution on the structural, magnetic, optical, and antibacterial properties of cobalt ferrite DOI Creative Commons

Waqia Tahir,

Talat Zeeshan,

Salma Waseem

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Sept. 21, 2023

Silver-doped Cobalt Ferrite nanoparticles AgxCo1-xFe2O4 with concentrations (x = 0, 0.05, 0.1, 0.15) have been prepared using a hydrothermal technique. The XRD pattern confirms the formation of spinel phase CoFe2O4 and presence Ag ions in structure. are confirmed by FTIR analysis major bands formed at 874 651 cm-1, which represent tetrahedral octahedral sites. optical properties reveals an increase band gap energy increasing concentration dopant. values depicted for x 0.15 3.58 eV, 3.08 2.93 2.84 eV respectively. Replacement Co2+ ion nonmagnetic Ag2+ causes change saturation magnetization, Ms 48.36, 29.06, 40.69, 45.85 emu/g being recorded. were found to be effective against Acinetobacter Lwoffii Moraxella species, high inhibition zone value 8 × cm bacteria. It is suggested that, above results, synthesized material suitable memory storage devices antibacterial activity.

Language: Английский

Citations

29
A novel magnetic NiFe2O4-Ag-ZnO hybrid nanocomposite for the escalated photocatalytic dye degradation and antibacterial activities DOI
Amitender Singh, Fayu Wan, Kavita Yadav

et al.

Materials Science and Engineering B, Journal Year: 2023, Volume and Issue: 299, P. 116935 - 116935

Published: Oct. 10, 2023

Language: Английский

Citations

25
ZnO-Cu/NiFe2O4 magnetic nanocomposite with boosted photocatalytic and antibacterial activity against E. coli. DOI
Amitender Singh, Kavita Yadav, Rakesh Kumar

et al.

Nano-Structures & Nano-Objects, Journal Year: 2024, Volume and Issue: 37, P. 101087 - 101087

Published: Jan. 5, 2024

Language: Английский

Citations

15
Investigations on temperature-dependent magnetic properties and magnetic thermal stability of magnesium ferrite (MgFe2O4) nanoparticles DOI
Manish Naagar, Sonia Chalia, Fayu Wan

et al.

Journal of Magnetism and Magnetic Materials, Journal Year: 2024, Volume and Issue: 592, P. 171798 - 171798

Published: Feb. 1, 2024

Language: Английский

Citations

9
Green‐synthesis of Ni‐Co nanoferrites using aloe vera extract: Structural, optical, magnetic, and antimicrobial studies DOI Open Access

Neetu Dhanda,

Preeti Thakur, Rakesh Kumar

et al.

Applied Organometallic Chemistry, Journal Year: 2023, Volume and Issue: 37(7)

Published: April 25, 2023

Nickel‐doped cobalt nanoferrites (Ni x Co 1‐x Fe 2 O 4 , where = 0.0 to 1.0 with step size 0.2) were prepared using the auto combustion method in which aloe vera extract was taken as a fuel. Further, characterization for antimicrobial, structural, optical, and magnetic studies performed ferrite nanoparticles. Antimicrobial activity assessed against prevalent human fungal pathogen, Candida albicans . The X‐ray diffraction (XRD) pattern confirmed spinel cubic phase an average crystallite of 28 nm. Fourier transform infrared spectroscopy (FTIR) stretching mode vibration at tetrahedral octahedral sites. analysis properties done vibrating sample magnetometer (VSM), parameters, specific magnetization (67.69 emu/g) well squareness ratio σ R / S (0.47) observed. From UV–Visible absorbance spectra, band edge observed between 700 800 nm, gap values 2.84 eV 1.0. Furthermore, antimicrobial obtained nanoparticles inspected C. fungi, it that nickel‐doped shows inhibitory nature. Maximum inhibition 0.43 (67% growth) composition Therefore, these can be used drug fungus infection.

Language: Английский

Citations

22
P-type semiconductor Gd/Fe ion doped Ni-Mg nanoferrites applications DOI Creative Commons

Burra. Aparna,

N. Hari Kumar,

Avula Edukondalu

et al.

Results in Chemistry, Journal Year: 2023, Volume and Issue: 5, P. 100957 - 100957

Published: Jan. 1, 2023

Citrate gel-auto combustion was used to create gadolinium doped Ni-Mg ferrites with the chemical formula Ni0.8Mg0.2GdxFe2-xO4 (NMGF) compositions x = (0.00, 0.005, 0.010, 0.015, 0.020, and 0.025). Gadolinium substitution has been studied see how it affects structural electrical characteristics of complexes. The NMGF crystallizes into a cubic spinel structure, no secondary phase emerging, according X-ray diffraction patterns. elemental composition analysis validates existence predicted components in samples based on stoichiometry. Images taken transmission electron microscope high resolution scanning indicate type grain formation as well particle size produced materials. As compared undoped ferrite, Fourier transform infrared spectroscopy verifies establishment predicts movement bands corresponding Fe-O vibrations towards higher wavenumbers. were measured for conductivity at temperatures ranging from 300 723 K. Conductivity measurements revealed ferromagnetic paramagnetic transition temperature (Tc) all activation energy determined below above Tc. TEP made using differential technique prepared ferrites' Seebeck coefficient (S) rose increasing temperature.

Language: Английский

Citations

18
Toxicology and Toxicity Studies of Nano-Biomaterials DOI

Raksha Rathore,

Deepa Suhag, Fayu Wan

et al.

Published: Jan. 1, 2023

The subject of nanotechnology has significant changes in the last 10 years as new applications nanoparticles (NPs) and other nano-biomaterials have been discovered. However, toxicity their interactions with biological systems are still poorly understood. a nanoparticle is affected by its size, shape, surface area, chemistry. Nanoparticles can be ingested, breathed, or absorbed via skin. With greater manufacturing deliberate (sunscreens, medicine delivery) inadvertent (environmental, occupational) exposure to these particles, chance unfavorable health impacts will most likely grow. To ensure risk-free long-term implementation nanotechnology, possible concerns nanomaterials must physiologically defined. As result, there increased scientific curiosity about found surroundings humans. Humans exposed many nanoscale materials since infancy, recently developed area turned into yet another threat human existence. NPs may penetrate body, get past numerous barriers, potentially even reach sensitive organs because small size. Scientists proposed suggestions that smaller than nm act like gases, easily tissues, might disrupt normal biochemical environment cells. more dangerous large-sized chemical particle equivalents, it commonly accepted NP toxicities inversely related were concerned unpredictable effects unique physicochemical characteristics systems. believed methods thinking seek contribute safe use critical narrow knowledge gap focus entirely on problems.

Language: Английский

Citations

16