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Download fileControlled Release of Hydrogen Isotopes from Hydride-Magnetic Nanomaterials
journal contribution
posted on 2020-02-12, 14:51 authored by Simona E. Hunyadi
Murph, Kaitlin Coopersmith, Henry Sessions, Michael Brown, George LarsenIn
this work, hydrogen isotopes in the form of protium and deuterium
were rapidly desorbed from magnetic-hydride iron oxide-palladium (Fe2O3-Pd) hybrid nanomaterials using an alternating
magnetic field (AFM). Palladium (Pd), a hydride material with a well-known
hydrogen isotope effect, was deposited on an Fe2O3 magnetic nanoparticle support by solution chemistries and used as
a hydrogen isotope storage component. The morphological, structural,
optical, and magnetic studies reveal that the Fe2O3-Pd nanoparticles are hybrid structures exhibiting both hydrogen
isotope storage (Pd) and magnetic (Fe2O3) properties.
The hydrogen isotope sorption/desorption behavior of metal hydride-magnetic
nanomaterials was assessed by isothermal pressure–composition
response curves (isotherms). The amount and rate of hydrogen isotope
gas release was tuned by simply adjusting the strength of the magnetic
field strength applied. Protium and deuterium displayed similar loading
capacities, namely, H/M 0.55 and H/M = 0.45, but different plateau
pressures. Significant differences in the kinetics of release for
protium and deuterium during magnetic heating were observed. A series
of magnetically induced charge–discharge cycling experiments
were conducted showing that this is a highly reproducible and robust
process.
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Keywords
solution chemistriesfield strengthhydrogen isotope storage componentSignificant differenceshydrogen isotope effecthydrogen isotope storageHydrogen IsotopesAFMmagnetic-hydride iron oxide-palladiumhydrogen isotope gas releasehydride materialPd nanoparticlesnanoparticle supportControlled Releaseloading capacitiesmetal hydride-magnetic nanomaterialsplateau pressuresFe 2 O 3hydrogen isotopesHydride-Magnetic Nanomaterialsdeuterium