Article
Optics
A. B. Chavan, A. B. Gawande, V. B. Gaikwad, G. H. Jain, M. K. Deore
Summary: In this study, Dysprosium (Dy3+) doped SrMoO4 nanophosphors were successfully synthesized and characterized through various techniques. The SrMoO4 phosphor exhibited a single phase scheelite structure with small crystalline size range. Photoluminescence spectra revealed blue and bright yellow emissions, with the optimal concentration of Dy3+ doping found to be 6 mol%.
JOURNAL OF LUMINESCENCE
(2021)
Article
Polymer Science
Nagarajan Kannapiran, Athianna Muthusamy, Sher Singh Meena
Summary: Different concentrations of ZnFe2O4 and manganese substituted ZnFe2O4 nanoparticles dispersed poly(o-phenylenediamine)/ferrite nanocomposites were prepared by in-situ oxidative polymerization method, and their properties were characterized. XRD pattern showed good interaction between nanoparticles and PoPD, with changes in crystalline size and morphology. Mossbauer spectra indicated iron in Fe3+ high spin state, and magnetic studies revealed ferromagnetic nature with saturation magnetization increasing with nanoparticle concentration in PoPD/ferrite nanocomposites. PoPD/ZnFe2O4 exhibited higher dielectric constant than PoPD/MnZnFe2O4, while AC conductivity increased with frequency and temperature in PoPD/ferrite nanocomposites.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xingzhong Wu, Yasuhiro Kodera, Javier E. Garay
Summary: Rare earth doped polycrystalline Al2O3 ceramics have gained increasing research interest for lasing and lighting applications due to their excellent thermal conductivity and fracture strength. However, the optically anisotropic nature of Al2O3 limits its transparency, so precise control over powder processing and densification techniques is needed to optimize its nanostructure.
Article
Crystallography
Nada S. Al-Kadhi, Ghadah M. Al-Senani, Rasmiah S. Almufarij, Omar H. Abd-Elkader, Nasrallah M. Deraz
Summary: This study aimed to develop a self-combustion method for preparing copper and cobalt ferrites using dry leaves of the Corchorus olitorius plant. The fabrication of CuFe2O4 and CoFe2O4 with spinel-type structures and the Fd3m space group was confirmed through XRD and FTIR investigations. The materials showed two stages of thermal behavior, with the first stage indicating the formation of reacting oxides and the second stage indicating ferrite growth. Surface morphological analysis displayed the formation of uniform and nanosized particles, with the samples containing CoFe2O4 showing superior surface properties compared to those without CuFe2O4. Magnetic characteristics evaluated using VSM showed that cobalt ferrites had higher magnetization, squareness, and coercivity compared to copper ferrites.
Article
Materials Science, Multidisciplinary
Emad H. Bartawi, Oleg V. Mishin, Ghada Shaban, Jan H. Nordlien, Rajan Ambat
Summary: The microstructure and intergranular corrosion were studied in an extruded and aged Al-Mg-Si alloy doped with 0.05 wt% Cu after immersion in an acidified salt solution. Despite the low content of Cu, intergranular corrosion still occurs in this alloy. Electron microscopy analysis of the exposed surface in the corrosive environment does not show any significant difference in the fraction of corroded random and coincident site lattice high angle boundaries. Low angle boundaries with misorientations below 10 degrees are consistently found to be more resistant to intergranular corrosion than other boundary types.
Article
Materials Science, Ceramics
Salah M. El-Bahy, Javaria Arshad, Sana Munir, Khadija Chaudhary, Dalal Alhashmialameer, Diana Rakhmawaty Eddy, Muhammad Farooq Warsi, Muhammad Shahid
Summary: Bimetallic oxide BiSbO4 is a promising photocatalyst for environmental remediation, showing efficient degradation capabilities. XRD, SEM, and FT-IR techniques were employed to analyze the synthesized material.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. Prashanth, R. Karunanithi, Rasool Mohideen, S. Sivasankaran, Milica Vlahovic
Summary: AA7017 + x vol. % Al2O3 (x = 5, 10, 20) nanocomposite powders were synthesized by HEBM process, and the powders milled for 20 hours showed better performance. The synthesized powders were characterized using XRD, HR-SEM, HR-TEM, Zeta particle size analyzer, and TG-DSC. The particle sizes obtained from different diffraction analysis models were compared with the results from PSA, HR-SEM, and HR-TEM analyses.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Thuan Dinh Nguyen, Mario Caccia, Camilla K. McCormack, Grigorios Itskos, Kenneth H. Sandhage
Summary: The study showed that Al2O3/Cr composites formed Cr2O3 scales with different characteristics in air and CO2, while Ti2O3/Cr composites exhibited parabolic oxidation kinetics in both gases.
Article
Chemistry, Physical
Fatma Gami, Norah Algethami, H. M. Ragab, A. Rajah, A. E. Tarabiah
Summary: Nanocomposites of chitosan/polyacrylamide with synthesized selenium nanoparticles were prepared and characterized. The addition of selenium nanoparticles improved the optical and electrical properties of the nanocomposites, indicating their potential application prospects.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Environmental Sciences
Neha Lalotra, Priya Kaith, Kamni Pathania
Summary: This study focuses on the synthesis of Dy3+ doped Potassium Strontium Vanadate (KSrVO4) nanopowders and investigates their structural, spectroscopic, optical, and morphological characteristics. The results show that the nanophosphors have a small crystallite size, consistent functional groups, and particle size. Under UV light excitation, three major peaks were observed. Furthermore, the nanophosphors exhibited suitable CCT, enhanced color purity, and high quantum yield, suggesting potential applications in w-LED devices.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Neha Lalotra, Priya Kaith, Kamni Pathania
Summary: This study focuses on synthesizing an economical phosphor with low energy consumption and minimal environmental harm. Dysprosium-doped Potassium Strontium Vanadate (KSrVO4) nanopowders were synthesized and analyzed for their structural, spectroscopic, optical, and morphological characteristics. The results showed that the phosphor had suitable properties for potential applications in w-LED devices.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Cunqian Fang, Boyun Huang, Xin Yang, Anhong Shi, Ze Zhang, Jinren Yi, Qizhong Huang
Summary: By introducing HfC, TaC, and SiC into the Cf/LaB6 preform, four kinds of high-performance UHTC doped C/C composites were fabricated, showing excellent ablation resistance and stability. The composite doped with LaB6-HfC-TaC-SiC exhibited the best performance, with good coordination among the oxides, leading to suppressed further ablation and confirmed stability of the multi-phase layer.
Article
Materials Science, Textiles
S. R. Shah, K. J. Umrigar
Summary: This study investigates the degumming process of decorticated ramie fiber using different systems, and finds that peracetic acid is the most effective method followed by the synergy of alkalis.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Marcus Weber, Raul D. Rodriguez, Dietrich R. T. Zahn, Klaus Stoewe, Michael Mehring
Summary: delta-Bi2O3:M (M = S, Se, and Re) with an oxygendefective fluorite-type structure was prepared by a coprecipitation method, and their properties were investigated and compared.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Pooja Rohilla, A. S. Rao
Summary: This work presents the morphological and photoluminescence studies of single ion Ho3+ doped and Ho3+/Yb3+ co-doped Ba3-x-yMoTiO8:xHo(3+)/yYb(3+) phosphors synthesized by a conventional solid-state reaction method. The results show promising applications of the phosphor in non-linear processes, as well as in linear and non-linear luminescence-based devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)
