TY - JOUR
T1 - Synthesis of nanoporous graphene oxide adsorbents by freeze-drying or microwave radiation
T2 - Characterization and hydrogen storage properties
AU - Kostoglou, Nikolaos
AU - Tzitzios, Vasilios
AU - Kontos, Athanassios G.
AU - Giannakopoulos, Konstantinos
AU - Tampaxis, Christos
AU - Papavasiliou, Aggeliki
AU - Charalambopoulou, Georgia
AU - Steriotis, Theodore
AU - Li, Yuanqing
AU - Liao, Kin
AU - Polychronopoulou, Kyriaki
AU - Mitterer, Christian
AU - Rebholz, Claus
N1 - Funding Information:
The present research was partially supported by the EC FP7-INFRASTRUCTURES project H2FC (GA No. 284522 ) and by Khalifa University Internal Research Fund (KUIRF L1 2013/210014 and KUIRF 2014/210047 ). The authors are very grateful to Mr. Ian Walters (Perpetuus Advanced Materials, UK) and Dr. Vladislav Ryzhkov (Fibrtec Inc., USA) for providing the commercial few-layer graphenes (FLGs) and Ros1™ products, respectively.
Publisher Copyright:
© 2015 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
PY - 2015/6/8
Y1 - 2015/6/8
N2 - In the present work, we synthesized and systematically characterized two novel graphene-based nanomaterials, a chemically reduced graphene oxide (GO) sponge and a microwave-exfoliated GO. Textural properties were determined by N2 adsorption/desorption at 77 K, while additional characterization techniques were employed, such as Micro-Raman Spectroscopy, Field-Emission Scanning Electron Microscopy and High-Resolution Transmission Electron Microscopy, to elucidate further the structural and morphological features. Both nanomaterials were additionally evaluated for their H2 storage capacity and were critically compared to commercially available carbons (e.g. few-layer graphenes, carbon nanotubes) based on systematic H2 adsorption/desorption measurements at 77 K between 0 and 1 bar. Maximum H2 gravimetric capacities of ∼0.5 wt% and ∼0.7 wt% were recorded at 77 K and 1 bar for the reduced GO sponge and the microwave-exfoliated GO, respectively.
AB - In the present work, we synthesized and systematically characterized two novel graphene-based nanomaterials, a chemically reduced graphene oxide (GO) sponge and a microwave-exfoliated GO. Textural properties were determined by N2 adsorption/desorption at 77 K, while additional characterization techniques were employed, such as Micro-Raman Spectroscopy, Field-Emission Scanning Electron Microscopy and High-Resolution Transmission Electron Microscopy, to elucidate further the structural and morphological features. Both nanomaterials were additionally evaluated for their H2 storage capacity and were critically compared to commercially available carbons (e.g. few-layer graphenes, carbon nanotubes) based on systematic H2 adsorption/desorption measurements at 77 K between 0 and 1 bar. Maximum H2 gravimetric capacities of ∼0.5 wt% and ∼0.7 wt% were recorded at 77 K and 1 bar for the reduced GO sponge and the microwave-exfoliated GO, respectively.
KW - Characterization
KW - Graphene oxide
KW - Gravimetric capacity
KW - Hydrogen storage
KW - Nanoporous sorbents
KW - Physical adsorption
UR - http://www.scopus.com/inward/record.url?scp=84928929546&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2015.03.053
DO - 10.1016/j.ijhydene.2015.03.053
M3 - Article
AN - SCOPUS:84928929546
SN - 0360-3199
VL - 40
SP - 6844
EP - 6852
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 21
ER -
