We are doing a experiment that we need to know how much absorded CO gas can release. Are there any easy but effective methods for this? It'd better to just make use of normal instruments to reach our goal, like gas chromatography
Dear Lee,
The following publications covers the answer to your question.
1-Progress in Materials Science
Volume 69, April 2015, Pages 1–60 (see attached file).
Graphene-based materials: Synthesis and gas sorption, storage and separation
Srinivas Gadipelli, , Zheng Xiao Guo,
Abstract
Graphene-based materials have generated tremendous interest in a wide range of research activities. A wide variety of graphene related materials have been synthesised for potential applications in electronics, energy storage, catalysis, and gas sorption, storage, separation and sensing. Recently, gas sorption, storage and separation in porous nanocarbons and metal–organic frameworks have received increasing attention. In particular, the tuneable porosity, surface area and functionality of the lightweight and stable graphene-based materials open up great scope for those applications. Such structural features can be achieved by the design and control of the synthesis routes. Here, we highlight recent progresses and challenges in the syntheses of graphene-based materials with hierarchical pore structures, tuneable high surface area, chemical doping and surface functionalization for gas (H2, CH4, CO2, N2, NH3, NO2, H2S, SO2, etc.) sorption, storage and separation.
2- Letter Nature Materials 6, 652 - 655 (2007)
Published online: 29 July 2007 | doi:10.1038/nmat1967
Subject Categories: Electronic materials | Sensors and biosensors | Nanoscale materials
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F. Schedin
A. K. Geim
S. V. Morozov
E. W. Hill
P. Blake
M. I. Katsnelson
more authors of this article
Detection of individual gas molecules adsorbed on graphene
F. Schedin1, A. K. Geim1, S. V. Morozov2, E. W. Hill1, P. Blake1, M. I. Katsnelson3 & K. S. Novoselov1
Abstract
The ultimate aim of any detection method is to achieve such a level of sensitivity that individual quanta of a measured entity can be resolved. In the case of chemical sensors, the quantum is one atom or molecule. Such resolution has so far been beyond the reach of any detection technique, including solid-state gas sensors hailed for their exceptional sensitivity1, 2, 3, 4. The fundamental reason limiting the resolution of such sensors is fluctuations due to thermal motion of charges and defects5, which lead to intrinsic noise exceeding the sought-after signal from individual molecules, usually by many orders of magnitude. Here, we show that micrometre-size sensors made from graphene are capable of detecting individual events when a gas molecule attaches to or detaches from graphene’s surface. The adsorbed molecules change the local carrier concentration in graphene one by one electron, which leads to step-like changes in resistance. The achieved sensitivity is due to the fact that graphene is an exceptionally low-noise material electronically, which makes it a promising candidate not only for chemical detectors but also for other applications where local probes sensitive to external charge, magnetic field or mechanical strain are required.
Hoping this will be helpful,
Rafik
Dear Lee,
The following publications covers the answer to your question.
1-Progress in Materials Science
Volume 69, April 2015, Pages 1–60 (see attached file).
Graphene-based materials: Synthesis and gas sorption, storage and separation
Srinivas Gadipelli, , Zheng Xiao Guo,
Abstract
Graphene-based materials have generated tremendous interest in a wide range of research activities. A wide variety of graphene related materials have been synthesised for potential applications in electronics, energy storage, catalysis, and gas sorption, storage, separation and sensing. Recently, gas sorption, storage and separation in porous nanocarbons and metal–organic frameworks have received increasing attention. In particular, the tuneable porosity, surface area and functionality of the lightweight and stable graphene-based materials open up great scope for those applications. Such structural features can be achieved by the design and control of the synthesis routes. Here, we highlight recent progresses and challenges in the syntheses of graphene-based materials with hierarchical pore structures, tuneable high surface area, chemical doping and surface functionalization for gas (H2, CH4, CO2, N2, NH3, NO2, H2S, SO2, etc.) sorption, storage and separation.
2- Letter Nature Materials 6, 652 - 655 (2007)
Published online: 29 July 2007 | doi:10.1038/nmat1967
Subject Categories: Electronic materials | Sensors and biosensors | Nanoscale materials
ARTICLE LINKS
Supplementary info
ARTICLE TOOLS
Send to a friend
Export citation
Export references
Rights and permissions
Order commercial reprints
SEARCH PUBMED FOR
F. Schedin
A. K. Geim
S. V. Morozov
E. W. Hill
P. Blake
M. I. Katsnelson
more authors of this article
Detection of individual gas molecules adsorbed on graphene
F. Schedin1, A. K. Geim1, S. V. Morozov2, E. W. Hill1, P. Blake1, M. I. Katsnelson3 & K. S. Novoselov1
Abstract
The ultimate aim of any detection method is to achieve such a level of sensitivity that individual quanta of a measured entity can be resolved. In the case of chemical sensors, the quantum is one atom or molecule. Such resolution has so far been beyond the reach of any detection technique, including solid-state gas sensors hailed for their exceptional sensitivity1, 2, 3, 4. The fundamental reason limiting the resolution of such sensors is fluctuations due to thermal motion of charges and defects5, which lead to intrinsic noise exceeding the sought-after signal from individual molecules, usually by many orders of magnitude. Here, we show that micrometre-size sensors made from graphene are capable of detecting individual events when a gas molecule attaches to or detaches from graphene’s surface. The adsorbed molecules change the local carrier concentration in graphene one by one electron, which leads to step-like changes in resistance. The achieved sensitivity is due to the fact that graphene is an exceptionally low-noise material electronically, which makes it a promising candidate not only for chemical detectors but also for other applications where local probes sensitive to external charge, magnetic field or mechanical strain are required.
Hoping this will be helpful,
Rafik
Use a methanizer; run it on GC-FID. If you can transfer it into headspace vials then you can probably get it hot enough to release the CO2. You'll get low ng sensitivity with the methanizer and the FID, which hopefully will be within your analytical range.
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