Fe₃O₄@graphene as a superior catalyst for hydrogen de/absorption from/in MgH₂/Mg

Abstract

The present investigation describes the hydrogen sorption (de/absorption) behavior of MgH2 catalyzed by graphene sheet templated Fe3O4 nanoparticles (Fe3O4@GS).

Simultaneous improvement of kinetics and thermodynamics based on SrF2 and SrF2@Gr additives on hydrogen sorption in MgH2

“…This was further used as additive for hydrogen sorption in Mg/MgH 2 . Our previous studies have shown the synthesis protocol and detailed procedure of graphene templation [26][27][28] .…”

Excellent catalysis of Mn3O4 nanoparticles on the hydrogen storage properties of MgH2: an experimental and theoretical study

“…In addition, the dehydrogenated sample could absorb about 4.24 and 1.0 wt% hydrogen within 10 min at 100 and 50 C, respectively. Bhatnagar et al 40 demonstrated that MgH 2 catalyzed by Fe 3 O 4 @GS offers improved hydrogen storage behaviour. The MgH 2 -Fe 3 O 4 @GS had an onset desorption temperature of about 262 C and the dehydrogenated sample could absorb 6.20 wt% hydrogen in 2.5 min under 15 atm H 2 pressure at 290 C. Mustafa et al 41 discovered that a MgH 2 -5 wt% CeO 2 sample released about 3.6 wt% hydrogen in 30 min at 320 C and the dehydrogenated sample could absorb approximately 3.95 wt% hydrogen within 5 min at 320 C.…”

Metallic glassy Ti2Ni grain-growth inhibitor powder for enhancing the hydrogenation/dehydrogenation kinetics of MgH2

“…10,11 Since the 1990s, enormous efforts have been dedicated for improving the hydrogenation/dehydrogenation behaviors of MgH 2 , using pure metal catalysts, 12,13 intermetallic compounds, 14 metal oxides, 15,16 carbides 17 and different families of composite and nanocomposite materials. [18][19][20][21] Recently, Shinde et al 22 demonstrated that successful self-assembly of MgH 2 nanoparticles in activated carbon led to the improvement of the physical and chemical behavior of the hydride phase for achieving reversible hydrogen storage.…”