Nano Science and Technology Institute
Nanotech 2014 Vol. 3
Nanotech 2014 Vol. 3
Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water
Chapter 6: Energy Storage

Hydrogen storage by reduced graphene oxide and graphene-like nanosheets decorated with Fe nanoclusters

Authors:M.S.L. Hudson, O.N. Srivastava, S. Simizu, S.G. Sankar
Affilation:Central University of Tamil Nadu, IN
Pages:423 - 427
Keywords:helium isotherm, nitrogen isotherm, thermal reduction, chemical reduction, pore size analysis
Abstract:Here, we present the high pressure hydrogen sorption isotherm up to 50 bar of graphene oxide (GO) reduced by thermal reduction (TR-GO), chemical reduction (CR-GO) and graphene like nanosheets decorated with Fe nanoclusters (Fe-GS). GO was first derived by thermal exfoliation of graphite oxide, prepared by modified Standermiur method; further reduction at 623K under high vacuum yields TR-GO. CR-GO has been produced by reduction of GO using hydrazine. Fe-GS has been synthesized through arc discharge between the ends of two graphite rods with one rod carrying Fe nanoparticles. The surface area calculated from nitrogen adsorption isotherm at 77 K using BET method for GO, TR-GO, CR-GO and Fe-GS are 304, 357, 90 and 185 m2g-1, respectively. The skeletal density of TR-GO, CR-GO and Fe-GS determined through He gas probing are 1.8, 2.0 and 1.05 gcm-3, respectively. High pressure hydrogen PCT isotherm of TR-GO, CR-GO and Fe-GS has been determined at 300 K and 77 K. The volume of hydrogen adsorbed by TR-GO, CR-GO and Fe-GS at 77 K and 50 bar is 230 ccstp/gram (2.07 wt.% H2), 60 ccstp/gram (0.54 wt.% H2) and 240 ccstp/gram (2.16 wt.% H2), respectively.
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