Influence of CO{sub 2} activation on hydrogen storage behaviors of platinum-loaded activated carbon nanotubes

Journal Article · Wed Dec 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2010.08.035· OSTI ID:21494151

Lee, Seul-Yi ^[1]; Park, Soo-Jin ^[1]

---

1. Department of Chemistry, Inha University, 253, Nam-gu, Incheon 402-751 (Korea, Republic of)

In this work, platinum (Pt) metal loaded activated multi-walled carbon nanotubes (MWNTs) were prepared with different structural characteristics for hydrogen storage applications. The process was conducted by a gas phase CO{sub 2} activation method at 1200 {sup o}C as a function of the CO{sub 2} flow time. Pt-loaded activated MWNTs were also formulated to investigate the hydrogen storage characteristics. The microstructures of the Pt-loaded activated MWNTs were characterized by XRD and TEM measurements. The textural properties of the samples were analyzed using N{sub 2} adsorption isotherms at 77 K. The BET, D-R, and BJH equations were used to observe the specific surface areas and the micropore and mesopore structures. The hydrogen storage capacity of the Pt-loaded activated MWNTs was measured at 298 K at a pressure of 100 bar. The hydrogen storage capacity was increased with CO{sub 2} flow time. It was found that the micropore volume of the activated MWNTs plays a key role in the hydrogen storage capacity. -- Graphical abstract: The hydrogen storage capacities of the Pt-loaded activated MWNTs as a function of CO{sub 2} flow time are described. Display Omitted

• OSTI ID: 21494151
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 12; Other Information: DOI: 10.1016/j.jssc.2010.08.035; PII: S0022-4596(10)00369-5; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ACTIVATED CARBON
ADSORPTION ISOTHERMS
CAPACITY
CARBON DIOXIDE
EQUATIONS
HYDROGEN STORAGE
MICROSTRUCTURE
NANOTUBES
PLATINUM
SPECIFIC SURFACE AREA
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 1000-4000 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ADSORBENTS
CARBON
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
ISOTHERMS
METALS
MICROSCOPY
NANOSTRUCTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM METALS
SCATTERING
STORAGE
TEMPERATURE RANGE
TRANSITION ELEMENTS