Synthesis and characteristics of CMK-3 modified with magnetite nanoparticles for application in hydrogen storage

L. VENOSTA; J. JUÁREZ; O. ANUNZIATA; P. G. BERCOFF; M. GOMEZ COSTA

JOURNAL OF NANOPARTICLE RESEARCH

SPRINGER

Lugar: Berlin; Año: 2020 vol. 22 p. 1 - 11

1388-0764

In this work, we report the synthesis and characterization of iron oxide nanoparticles supported in nanostructured carbon (CMK-3). This material is promising in the application of hydrogen adsorption for energy storage. The material with iron oxide nanoparticles (Fe-CMK-3) was successfully synthesized and characterized by X-ray diffraction, textural properties analysis, transmission and scanning electron microscopy, X-ray photoelectron spectroscopy and magnetization studies. A large amount of the iron incorporated as iron oxide nanoparticles was in the magnetite phase. The incorporation of magnetite on CMK-3 carbon surface significantly improved the storage capacity of hydrogen (4.45 wt.% at 77 K and10 bar) compared to CMK-3 framework alone (2.20 wt.% at 77 K and 10 bar). The synthesized material is promising for the hydrogen adsorption by weak bond forces (physisorption). A hydrogen adsorption mechanismwas proposed in which the nanoparticles of magnetite have an important role.