Multifunctional Co2+ and Cr3+ Substituted Ni-Cu Spinel Ferrites for Wastewater Remediation and Supercapacitor Applications

Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104209 - 104209

Published: Feb. 1, 2025

Language: Английский

Impact of Ho3+ Substitution on Structural, Morphological, Optical, Electrical, Thermoelectrical and Magnetic Properties of MgCuHoxFe2-xO4 (0 < x < 0.030) System

Asian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 36(8), P. 1853 - 1864

Published: July 25, 2024

A series of rare earth (Ho3+) doped magnesium-copper nanoferrites with the general chemical compositions Mg0.5Cu0.5HoxFe2-xO4 (where x = 0.000, 0.005, 0.010, 0.015, 0.020, 0.025 and 0.030) was fabricated by citrate sol-gel auto-combustion technique. The materials were investigated through powder XRD, FESEM, EDX, HRTEM, FTIR, UV-Vis, DC resistivity, TEP VSM for magnetic properties. crystallite size samples determined to be in range 33-40 nm increased Ho3+ content powder-XRD investigations validated spinel cubic structure space group Fd3m. analysis demonstrated that lattice constant reduced from 8.403 8.356 Å according FE-SEM micrographs, morphology found spherical. HR-TEM micrographs show average particle decreases 64 48 nm. FTIR examination revealed their ν1 ν2 absorption bands located between 412-401 cm–1 562-547 cm–1, respectively optical band gap 2.77-3.28 eV. In Mg-Cu Ho doping, there no obvious increase elasticity moduli. It observed thermal energy required transform p-type semiconducting n-type behaviour increases increasing doping composition. M-H loop saturation magnetization (Ms), coercivity (Hc) retentivity (Mr) values all enhanced when concentration varied anisotropically doping. findings this study suggested ferrites might beneficial resonance imaging biomedicine.

Language: Английский

Construction of a ternary composite of mg-doped biochar/CuO, and PAni for supercapacitor applications

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 108, P. 114785 - 114785

Published: Dec. 18, 2024

Language: Английский