Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture
Activation is commonly used to improve the surface and porosity of different kinds of carbon nanomaterials: activated carbon, carbon nanotubes, graphene, and carbon black. In this study, both physical and chemical activations are applied to graphene oxide by using CO<sub>2</sub> and KOH-...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2419 |
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| author | Rabita Mohd Firdaus Alexandre Desforges Mélanie Emo Abdul Rahman Mohamed Brigitte Vigolo |
| author_facet | Rabita Mohd Firdaus Alexandre Desforges Mélanie Emo Abdul Rahman Mohamed Brigitte Vigolo |
| author_sort | Rabita Mohd Firdaus |
| collection | DOAJ |
| description | Activation is commonly used to improve the surface and porosity of different kinds of carbon nanomaterials: activated carbon, carbon nanotubes, graphene, and carbon black. In this study, both physical and chemical activations are applied to graphene oxide by using CO<sub>2</sub> and KOH-based approaches, respectively. The structural and the chemical properties of the prepared activated graphene are deeply characterized by means of scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectrometry and nitrogen adsorption. Temperature activation is shown to be a key parameter leading to enhanced CO<sub>2</sub> adsorption capacity of the graphene oxide-based materials. The specific surface area is increased from 219.3 m<sup>2</sup> g<sup>−1</sup> for starting graphene oxide to 762.5 and 1060.5 m<sup>2</sup> g<sup>−1</sup> after physical and chemical activation, respectively. The performance of CO<sub>2</sub> adsorption is gradually enhanced with the activation temperature for both approaches: for the best performances of a factor of 6.5 and 9 for physical and chemical activation, respectively. The measured CO<sub>2</sub> capacities are of 27.2 mg g<sup>−1</sup> and 38.9 mg g<sup>−1</sup> for the physically and chemically activated graphene, respectively, at 25 °C and 1 bar. |
| first_indexed | 2024-03-10T07:21:51Z |
| format | Article |
| id | doaj.art-0edd82ad61dc47e8805410f62b72bc75 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:21:51Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-0edd82ad61dc47e8805410f62b72bc752023-11-22T14:32:17ZengMDPI AGNanomaterials2079-49912021-09-01119241910.3390/nano11092419Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide CaptureRabita Mohd Firdaus0Alexandre Desforges1Mélanie Emo2Abdul Rahman Mohamed3Brigitte Vigolo4School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Seberang Perai 14300, Penang, MalaysiaUniversité de Lorraine, CNRS, IJL, F-54000 Nancy, FranceUniversité de Lorraine, CNRS, IJL, F-54000 Nancy, FranceSchool of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Seberang Perai 14300, Penang, MalaysiaUniversité de Lorraine, CNRS, IJL, F-54000 Nancy, FranceActivation is commonly used to improve the surface and porosity of different kinds of carbon nanomaterials: activated carbon, carbon nanotubes, graphene, and carbon black. In this study, both physical and chemical activations are applied to graphene oxide by using CO<sub>2</sub> and KOH-based approaches, respectively. The structural and the chemical properties of the prepared activated graphene are deeply characterized by means of scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectrometry and nitrogen adsorption. Temperature activation is shown to be a key parameter leading to enhanced CO<sub>2</sub> adsorption capacity of the graphene oxide-based materials. The specific surface area is increased from 219.3 m<sup>2</sup> g<sup>−1</sup> for starting graphene oxide to 762.5 and 1060.5 m<sup>2</sup> g<sup>−1</sup> after physical and chemical activation, respectively. The performance of CO<sub>2</sub> adsorption is gradually enhanced with the activation temperature for both approaches: for the best performances of a factor of 6.5 and 9 for physical and chemical activation, respectively. The measured CO<sub>2</sub> capacities are of 27.2 mg g<sup>−1</sup> and 38.9 mg g<sup>−1</sup> for the physically and chemically activated graphene, respectively, at 25 °C and 1 bar.https://www.mdpi.com/2079-4991/11/9/2419graphene oxideactivationporosityadsorptioncarbon dioxide |
| spellingShingle | Rabita Mohd Firdaus Alexandre Desforges Mélanie Emo Abdul Rahman Mohamed Brigitte Vigolo Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture Nanomaterials graphene oxide activation porosity adsorption carbon dioxide |
| title | Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture |
| title_full | Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture |
| title_fullStr | Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture |
| title_full_unstemmed | Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture |
| title_short | Physical and Chemical Activation of Graphene-Derived Porous Nanomaterials for Post-Combustion Carbon Dioxide Capture |
| title_sort | physical and chemical activation of graphene derived porous nanomaterials for post combustion carbon dioxide capture |
| topic | graphene oxide activation porosity adsorption carbon dioxide |
| url | https://www.mdpi.com/2079-4991/11/9/2419 |
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