Title :
Microwave absorption and catalytic activity of NiCo nanostructures
Author :
Liu, J. ; Zeng, M.
Author_Institution :
Beihang Univ., Beijing, China
Abstract :
This study investigates the microwave absorption and catalytic activity of NiCo nanoparticles synthesized via solvothermal method. SEM, TEM, and EDX are used for structural and composition characterization of the nanoparticles. The saturation magnetization, magnetic anisotropy, and ferromagnetic properties are determined at room temperature by vibrating sample magnetometry. UV-vis spectroscopy is also performed to determine optical absorption properties. Results show that the dendritic structure and good electrical conductivity of the nanoparticles contribute to the excellent microwave absorbing performance and catalytic activity in chemical reduction of 4-nitrophenol to 4-aminophenol.
Keywords :
X-ray chemical analysis; catalysis; cobalt alloys; crystal growth from solution; dendritic structure; electrical conductivity; ferromagnetic materials; magnetic anisotropy; magnetic particles; magnetometry; microwave spectra; nanofabrication; nanomagnetics; nanoparticles; nickel alloys; organic compounds; reduction (chemical); scanning electron microscopy; transmission electron microscopy; ultraviolet spectra; visible spectra; 4-aminophenol; 4-nitrophenol; EDX; NiCo; SEM; TEM; UV-vis spectroscopy; catalytic activity; chemical reduction; composition characterization; dendritic structure; electrical conductivity; ferromagnetic properties; magnetic anisotropy; microwave absorption; nanoparticles; optical absorption; saturation magnetization; solvothermal method; structural characterization; temperature 293 K to 298 K; vibrating sample magnetometry; Absorption; Magnetic resonance imaging; Metals; Microwave imaging; Perpendicular magnetic anisotropy; Saturation magnetization;
Conference_Titel :
Magnetics Conference (INTERMAG), 2015 IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7321-7
DOI :
10.1109/INTMAG.2015.7157043
