Low temperature hydrogenation of iron nanoparticles on graphene.
Hydrogenation of iron nanoparticles was performed both computationally and experimentally where previously chemically-bonded iron hydride is considered to be unachievable under ordinary conditions. Density functional theory (DFT) calculations predict that hydrogenated iron nanoparticles are stabilized on a single-layer graphene/Cu substrate. Experimentally, iron nanoparticles were deposited onto a graphene/Cu substrate by vacuum deposition. Hydrogenation was done at 1atm of hydrogen gas and under liquid nitrogen. Mass spectrometry peak confirmed the hydrogen release from hydrogenated iron nanoparticles while a scanning transmission electron microscopy is used in order to link a geometrical shape of iron hydride nanoparticles between experimental and theoretical treatments. The hydrogenated iron nanoparticles were successfully synthesized where hydrogenated iron nanoparticles are stable under ordinary conditions.
Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan.
Keisuke
K
Takahashi
1] Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan [2].
Yongming
Y
Wang
Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan.
Shotaro
S
Chiba
Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan.
Yuki
Y
Nakagawa
1] Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan [2].
Shigehito
S
Isobe
Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8278, Japan.
Somei
S
Ohnuki