TITLE

Repeatable hydrogen adsorption using nanostructured graphite at room temperature

AUTHOR(S)
Kajiura, H.; Kadono, K.; Tsutsui, S.; Murakami, Y.
PUB. DATE
March 2003
SOURCE
Applied Physics Letters;3/24/2003, Vol. 82 Issue 12, p1929
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Repeatable hydrogen adsorption and desorption by nanostructured graphite was confirmed using a high-accuracy volumetric measuring apparatus at room temperature. The nanostructured graphite was prepared from graphite powder using a mechanical milling process at a pressure of 2.0 × 10[sup -4] Pa. The untreated graphite adsorbed 0.02 wt % of hydrogen, while 0.20-0.25 wt % of hydrogen can be repeatedly adsorbed by the nanostructured graphite. Measurements of the hydrogen adsorption rate at constant pressure and pore-size distribution suggest that the hydrogen molecules are adsorbed through a diffusion process into pores with a diameter less than 1 nm.
ACCESSION #
9319872

 

Related Articles

  • Adsorption of ortho and para H[sub 2] on NaCl(001). Briquez, S.; Picaud, S. // Journal of Chemical Physics;10/15/1998, Vol. 109 Issue 15, p6435 

    Examines the adsorption-desorption properties of para and ortho hydrogen gas molecules in sodium chloride. Adsorption of para-hydrogen molecules; Redshift changes in internal vibration frequencies for para-hydrogen molecules; Effects of pressure on infrared signals.

  • Application of density functional method to problem of creating hydrogen adsorption fuel cell. Samsonov, V.; Zubkov, V.; Grinev, I. // Technical Physics Letters;Apr2011, Vol. 37 Issue 4, p302 

    Local density profiles of molecular hydrogen adsorbed at 20.3 K in a plane-parallel pore of graphite adsorbent have been calculated using the method of density functional. It is shown that the optimum hydrogen storage is ensured by porous graphite structures with the pore width corresponding to...

  • Hydrogenation of magnesium nanoblades: The effect of concentration dependent hydrogen diffusion. Yang, B.; He, Y.-P.; Zhao, Y.-P. // Applied Physics Letters;2/21/2011, Vol. 98 Issue 8, p081905 

    By assuming the H diffusion coefficient and H adsorption rate to be exponentially and linearly dependent on concentration, a physical model is developed to predict the hydrogenation process of Mg nanoblades. The predicted H uptake curves agree well with the experimental data from V-coated Mg...

  • The Effect of Electroplating Conditions on the Absorption of Hydrogen and Its State in Electroplated Iron Strips. Paramonov, V.A.; Filatova, N.G.; Sergeeva, T.K.; Ilyukhina, M.V. // Protection of Metals;Mar/Apr2003, Vol. 39 Issue 2, p142 

    The effect of electrolysis conditions on the hydrogenation and the state of hydrogen in extra-pure iron strips obtained by electroplating is discussed. It is shown that an increase in the current density results in the increase in the content of diffusible hydrogen and the appearance of...

  • Suppression of nanoscale effects in nanomaterials by gas- and liquid-phase adsorbates. Vigdorovich, V.; Strel'nikova, K. // Protection of Metals & Physical Chemistry of Surfaces;May2012, Vol. 48 Issue 3, p383 

    The possibility and methods of suppressing the activity of adsorption sites of nanomaterials by an example of iron and zinc with water molecules and oxygen, including the conditions of low relative humidity and air pressure of 10 Pa, are considered.

  • Spectral cut-off in the efficiency of the resistive state formation caused by absorption of a single-photon in current-carrying superconducting nano-strips. Semenov, A.; Engel, A.; H�bers, H.-W.; Il'in, K.; Siegel, M. // European Physical Journal B -- Condensed Matter;Oct2005, Vol. 47 Issue 4, p495 

    We have studied supercurrent-assisted formation of the resistive state in nano-structured disordered superconducting Nb(N) films after absorption of a single optical to near-infrared photon. The efficiency of the resistive state formation has a pronounced spectral cut-off; corresponding...

  • Cross sections for the ionization continuum of H2 in the 15.3–17.2 eV energy range. Glass-Maujean, M.; Klumpp, S.; Werner, L.; Ehresmann, A.; Schmoranzer, H. // Journal of Chemical Physics;3/7/2007, Vol. 126 Issue 9, p094306 

    The absolute values for the cross sections of the ionization continuum of H2 had been measured at low energy (15.3–17.2 eV) Both absorption and ionization spectra were simultaneously recorded with linear response and absolute values, using a 10 m normal incidence monochromator installed...

  • Effects of hydrogen anneals on oxygen deficient SrTiO3-x single crystals. Jalan, Bharat; Engel-Herbert, Roman; Mates, Thomas E.; Stemmer, Susanne // Applied Physics Letters;8/4/2008, Vol. 93 Issue 5, p052907 

    The influence of hydrogen gas anneals on the electrical properties of nominally undoped, oxygen-deficient SrTiO3-x single crystals was investigated. Titanium getter layers and vacuum anneals were used to obtain oxygen-deficient SrTiO3-x with a low electrical resistivity. These crystals showed an...

  • Gas adsorption applications of porous metal--organic frameworks. Shengqian Ma // Pure & Applied Chemistry;Dec2009, Vol. 81 Issue 12, p2235 

    Porous metal-organic frameworks (MOFs) represent a new type of functional materials and have recently become a hot research field due to their great potential in various applications. In this review, recent progress of gas adsorption applications of porous MOFs, mainly including hydrogen...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics