Abstract
Graphene oxide (GO) wrapped transition metal oxide composite materials were synthesized by a very simple route without any additional agents and the hydrogen adsorption properties of the materials were investigated. The morphologies of GO/V2O5 and GO/TiO2 were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that single- or few-layered GO sheets wrapped throughout the V2O5 and TiO2 particles. According to X-ray photoelectron spectroscopy (XPS), the C-OH species of GO and the surface-adsorbed oxygen of the transition metal oxide bond together via a dehydration reaction. The wrapping phenomenon of GO causes the enhancement of hydrogen storage capacity at liquid nitrogen temperature (77 K) compared with those of the pristine transition metal oxides and GO. The enhancement of hydrogen storage capacity of GO-wrapped transition metal oxide composite materials results from the existence of interspaces between the transition metal oxide particles and the thin GO layers.
| Original language | English |
|---|---|
| Pages (from-to) | 7594-7599 |
| Number of pages | 6 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 37 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 May 1 |
| Externally published | Yes |
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Keywords
- Dehydration reaction
- Graphene oxide
- Hydrogen storage
- Transition metal oxide
- Wrapping
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Cite this
Agent-free synthesis of graphene oxide/transition metal oxide composites and its application for hydrogen storage. / Hong, Won G.; Kim, Byung Hoon; Lee, Sang Moon; Yu, Han Young; Yun, Yong Ju; Jun, Yongseok; Lee, Jin Bae; Kim, Hae Jin.
In: International Journal of Hydrogen Energy, Vol. 37, No. 9, 01.05.2012, p. 7594-7599.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Agent-free synthesis of graphene oxide/transition metal oxide composites and its application for hydrogen storage
AU - Hong, Won G.
AU - Kim, Byung Hoon
AU - Lee, Sang Moon
AU - Yu, Han Young
AU - Yun, Yong Ju
AU - Jun, Yongseok
AU - Lee, Jin Bae
AU - Kim, Hae Jin
PY - 2012/5/1
Y1 - 2012/5/1
N2 - Graphene oxide (GO) wrapped transition metal oxide composite materials were synthesized by a very simple route without any additional agents and the hydrogen adsorption properties of the materials were investigated. The morphologies of GO/V2O5 and GO/TiO2 were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that single- or few-layered GO sheets wrapped throughout the V2O5 and TiO2 particles. According to X-ray photoelectron spectroscopy (XPS), the C-OH species of GO and the surface-adsorbed oxygen of the transition metal oxide bond together via a dehydration reaction. The wrapping phenomenon of GO causes the enhancement of hydrogen storage capacity at liquid nitrogen temperature (77 K) compared with those of the pristine transition metal oxides and GO. The enhancement of hydrogen storage capacity of GO-wrapped transition metal oxide composite materials results from the existence of interspaces between the transition metal oxide particles and the thin GO layers.
AB - Graphene oxide (GO) wrapped transition metal oxide composite materials were synthesized by a very simple route without any additional agents and the hydrogen adsorption properties of the materials were investigated. The morphologies of GO/V2O5 and GO/TiO2 were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that single- or few-layered GO sheets wrapped throughout the V2O5 and TiO2 particles. According to X-ray photoelectron spectroscopy (XPS), the C-OH species of GO and the surface-adsorbed oxygen of the transition metal oxide bond together via a dehydration reaction. The wrapping phenomenon of GO causes the enhancement of hydrogen storage capacity at liquid nitrogen temperature (77 K) compared with those of the pristine transition metal oxides and GO. The enhancement of hydrogen storage capacity of GO-wrapped transition metal oxide composite materials results from the existence of interspaces between the transition metal oxide particles and the thin GO layers.
KW - Dehydration reaction
KW - Graphene oxide
KW - Hydrogen storage
KW - Transition metal oxide
KW - Wrapping
UR - http://www.scopus.com/inward/record.url?scp=84860286118&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860286118&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2012.02.010
DO - 10.1016/j.ijhydene.2012.02.010
M3 - Article
AN - SCOPUS:84860286118
VL - 37
SP - 7594
EP - 7599
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 9
ER -