Author
K. Ashwini
Other affiliations: Dayananda Sagar College of Engineering
Bio: K. Ashwini is an academic researcher from Tumkur University. The author has contributed to research in topics: Phosphor & Diffuse reflectance infrared fourier transform. The author has an hindex of 3, co-authored 3 publications receiving 56 citations. Previous affiliations of K. Ashwini include Dayananda Sagar College of Engineering.
Papers
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TL;DR: In this article, the spinel CuFe 2 O 4, ZnFe 2O 4 and NiFe 2 o 4 were synthesized by simple solution combustion synthesis (SCS) and characterized by powder X-ray diffraction (PXRD), Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible Spectrogram and Scanning Electron Microscopy (SEM).
85 citations
TL;DR: In this article, a solution combustion method was used to synthesize MnFe 2 O 4 NPs at a temperature of about 450°C using Oxalyl Dihydrazide (ODH) as a chemical fuel.
19 citations
TL;DR: In this article, a novel SrAl2O4: Gd3+ (1-11 mol%) nanophosphor were synthesized via solution combustion method by using ODH as a fuel.
5 citations
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TL;DR: In this paper, the authors reviewed the recent advances in a photocatalytic application of spinel ferrite nanoparticles and their nanocomposites towards pollutant degradation capacities in wastewater, with more emphasis on their novelties.
198 citations
TL;DR: The present review focuses on different techniques for synthesis of MnZn ferrites in literature, their characterization tools, effect of doping on the properties of Mn Zn ferrite and finally about their applications.
184 citations
TL;DR: A symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 with enhanced solar photocatalytic performance was fabricated, and employed in the photodegradation of norfloxacin this paper.
Abstract: A symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 with enhanced solar photocatalytic performance was fabricated, and employed in the photodegradation of norfloxacin. The photocatalytic performances of BiFeO3/CuBi2O4/BaTiO3, BiFeO3, CuBi2O4 and BaTiO3 were compared. Also, the mechanism on the symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 photocatalytic system was proposed. The results display that BiFeO3/CuBi2O4/BaTiO3 has more superior photocatalytic performance, which results from the construction of the symmetric double Z-scheme photocatalyst. Its light absorption range is extended to UV-vis and near-infrared (NIR) light, which effectively utilizes the whole solar light spectrum. Especially, the large VB oxidation surface of this composite photocatalyst promotes e--h+ separation and improves the oxidation-reduction ability. Also, BiFeO3/CuBi2O4/BaTiO3 can be recycled with superior stability for 5 cycles. Furthermore, in the photodegradation, the h+ and •OH play major roles, while the •O2− plays little role. Hence, the BiFeO3/CuBi2O4/BaTiO3/solar light technology has great application prospects in the treatment of contaminated wastewater with antibiotics.
136 citations
TL;DR: In this article, a review of the synthesis methods and applications of MFe2O4 nanoparticles is presented, with emphasis on the advantages and disadvantages of each synthesis route and main applications.
Abstract: In the last decade, research on the synthesis and characterization of nanosized ferrites has highly increased and a wide range of new applications for these materials have been identified. The ability to tailor the structure, chemical, optical, magnetic, and electrical properties of ferrites by selecting the synthesis parameters further enhanced their widespread use. The paper reviews the synthesis methods and applications of MFe2O4 (M = Co, Cu, Mn, Ni, Zn) nanoparticles, with emphasis on the advantages and disadvantages of each synthesis route and main applications. Along with the conventional methods like sol-gel, thermal decomposition, combustion, co-precipitation, hydrothermal, and solid-state synthesis, several unconventional methods, like sonochemical, microwave assisted combustion, spray pyrolysis, spray drying, laser pyrolysis, microemulsion, reverse micelle, and biosynthesis, are also presented. MFe2O4 (M = Co, Cu, Mn, Ni, Zn) nanosized ferrites present good magnetic (high coercivity, high anisotropy, high Curie temperature, moderate saturation magnetization), electrical (high electrical resistance, low eddy current losses), mechanical (significant mechanical hardness), and chemical (chemical stability, rich redox chemistry) properties that make them suitable for potential applications in the field of magnetic and dielectric materials, photoluminescence, catalysis, photocatalysis, water decontamination, pigments, corrosion protection, sensors, antimicrobial agents, and biomedicine.
99 citations
TL;DR: In this article, the preparation and characterization of nanocrystalline spinel powder of cubic copper ferrite nanoparticles (NPs) which have been fabricated via a cost-effective citrate sol-gel approach was reported.
Abstract: This study reports the preparation and characterization of nanocrystalline spinel powder of cubic copper ferrite nanoparticles (NPs) which have been fabricated via a cost-effective citrate sol–gel approach. The structural and morphological properties of the nanoparticles are analyzed by X-ray diffraction (XRD), Fourier transform spectroscopy (FT-IR), and scanning electron microscopy (SEM) whereas magnetic properties and Mossbauer analysis were performed using vibrating sample magnetometer (VSM) and Mossbauer spectra, respectively, and were characterized in detail. The empirical aim of this study is to perceive the transition phase of CuFe2O4 as cubic symmetry which was confirmed by SEM images, and a couple of studies reported on the cubic structure of copper ferrite and discussed the magnetic properties. However, the present study gives the detailed information of the formation of cubic structure and magnetic behavior of the CuFe2O4 cubic structure. X-ray diffraction measurements of resulting NPs show that the grain size of the particles is about 42.08 nm while SEM analysis showed that the particles have cubic nanostructured shapes with non-homogeneous sizes in around 80–100 nm. From 57Fe, Mossbauer parameters consist of one superparamagnetic doublet and superposition of four sextets. VSM result shows the enhanced superparamagnetic nature of the CuFe2O4 NPs.
91 citations