Imperial College London
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DrMartinaDe Marco

Faculty of Engineering, Department of Mechanical Engineering

Research Project Manager
 
 
 
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Contact

 

+44 (0)20 7594 1610m.de-marco12

 
 
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Location

 

409City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{De:2017:10.1016/j.carbon.2017.07.094,
author = {De, Marco M and Menzel, R and Bawaked, SM and Mokhtar, M and Obaid, AY and Basahel, SN and Shaffer, M},
doi = {10.1016/j.carbon.2017.07.094},
journal = {Carbon},
pages = {616--627},
title = {Hybrid Effects in Graphene Oxide/Carbon Nanotube-Supported Layered Double Hydroxides: Enhancing the CO2 Sorption Properties},
url = {http://dx.doi.org/10.1016/j.carbon.2017.07.094},
volume = {123},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Graphene oxide (GO) and multi-walled carbon nanotubes (MWCNT) have been previously used independently as active supports for layered double hydroxides (LDH), and found to enhance the intrinsic CO2 sorption capacity. However, the long-term stability of the materials subjected to temperature-swing adsorption (TSA) cycles still requires improvement. In this contribution, GO and MWCNT are hybridized to produce mixed substrates with improved surface area, and compatibility for the subsequent deposition of LDH platelets, compared to either phase alone. The incorporation of a robust and thoroughly hybridized carbon network considerably enhances the thermal stability of activated, promoted LDH over twenty cycles of gas adsorption-desorption (96% of retention of the initial sorption capacity at the 20th cycle), dramatically reducing the sintering previously observed when either GO or MWCNT were added separately. Detailed characterization of the morphology of the supported LDH, at several stages of the multicycle adsorption process, shows that the initial morphology of the adsorbents is more strongly retained when supported on the robust hybrid GO/MWCNT network; the CO2 adsorption performance correlates closely with the specific surface area of the adsorbents, with both maximized at small loadings of a 1:1 ratio GO:MWCNT substrate.
AU  - De,Marco M
AU  - Menzel,R
AU  - Bawaked,SM
AU  - Mokhtar,M
AU  - Obaid,AY
AU  - Basahel,SN
AU  - Shaffer,M
DO  - 10.1016/j.carbon.2017.07.094
EP  - 627
PY  - 2017///
SN  - 0008-6223
SP  - 616
TI  - Hybrid Effects in Graphene Oxide/Carbon Nanotube-Supported Layered Double Hydroxides: Enhancing the CO2 Sorption Properties
T2  - Carbon
UR  - http://dx.doi.org/10.1016/j.carbon.2017.07.094
UR  - http://hdl.handle.net/10044/1/50339
VL  - 123
ER  -
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