Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal
Pore modulation via hydrothermal carbonization (HTC) needs investigation due to its crucial effect on surface that influences its multirole utilization of such ultraporous sorbents in applications of energy storage- hydrogen and capacitive- as well as for pollutant abatement- carbon capture and dye...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/20/3575 |
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| author | Al Ibtida Sultana Cadianne Chambers Muzammil M. N. Ahmed Pavithra Pathirathna Toufiq Reza |
| author_facet | Al Ibtida Sultana Cadianne Chambers Muzammil M. N. Ahmed Pavithra Pathirathna Toufiq Reza |
| author_sort | Al Ibtida Sultana |
| collection | DOAJ |
| description | Pore modulation via hydrothermal carbonization (HTC) needs investigation due to its crucial effect on surface that influences its multirole utilization of such ultraporous sorbents in applications of energy storage- hydrogen and capacitive- as well as for pollutant abatement- carbon capture and dye removal. Hence, loblolly pine was hydrothermally carbonized followed by KOH activation to synthesize superactivated hydrochars (SAH). The resulting SAHs had specific surface area (SSA) 1462–1703 m<sup>2</sup>/g, total pore (TPV) and micropore volume (MPV) of 0.62–0.78 cm<sup>3</sup>/g and 0.33–0.49 cm<sup>3</sup>/g, respectively. The SAHs exhibit excellent multifunctional performance with remarkably high atmospheric CO<sub>2</sub> capture of 145.2 mg/g and high pressure cryogenic H<sub>2</sub> storage of 54.9 mg/g. The fabricated supercapacitor displayed substantial specific capacitance value of maximum 47.2 Fg<sup>−1</sup> at 1 A g<sup>−1</sup> in 6 M KOH and highest MB dye removal of 719.4 mg/g. Higher HTC temperature resulted in increased surface porosity as higher SSA, TPV benefitted H<sub>2</sub> storage and MB dye removal while superior MPV favored CO<sub>2</sub> capture. Moderate HTC temperature ensured higher mesopore-to-macropore volume ratio favoring electrochemical performance. Isotherm modelling of the adsorbates was compared using models: Langmuir, Freundlich, Langmuir- Freundlich and Temkin. |
| first_indexed | 2024-03-09T19:40:50Z |
| format | Article |
| id | doaj.art-d3b95c45c72147e7a6ed31657059af6c |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T19:40:50Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-d3b95c45c72147e7a6ed31657059af6c2023-11-24T01:39:27ZengMDPI AGNanomaterials2079-49912022-10-011220357510.3390/nano12203575Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye RemovalAl Ibtida Sultana0Cadianne Chambers1Muzammil M. N. Ahmed2Pavithra Pathirathna3Toufiq Reza4Department of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USADepartment of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USADepartment of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USADepartment of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USADepartment of Biomedical and Chemical Engineering and Sciences, Florida Institute of Technology, Melbourne, FL 32901, USAPore modulation via hydrothermal carbonization (HTC) needs investigation due to its crucial effect on surface that influences its multirole utilization of such ultraporous sorbents in applications of energy storage- hydrogen and capacitive- as well as for pollutant abatement- carbon capture and dye removal. Hence, loblolly pine was hydrothermally carbonized followed by KOH activation to synthesize superactivated hydrochars (SAH). The resulting SAHs had specific surface area (SSA) 1462–1703 m<sup>2</sup>/g, total pore (TPV) and micropore volume (MPV) of 0.62–0.78 cm<sup>3</sup>/g and 0.33–0.49 cm<sup>3</sup>/g, respectively. The SAHs exhibit excellent multifunctional performance with remarkably high atmospheric CO<sub>2</sub> capture of 145.2 mg/g and high pressure cryogenic H<sub>2</sub> storage of 54.9 mg/g. The fabricated supercapacitor displayed substantial specific capacitance value of maximum 47.2 Fg<sup>−1</sup> at 1 A g<sup>−1</sup> in 6 M KOH and highest MB dye removal of 719.4 mg/g. Higher HTC temperature resulted in increased surface porosity as higher SSA, TPV benefitted H<sub>2</sub> storage and MB dye removal while superior MPV favored CO<sub>2</sub> capture. Moderate HTC temperature ensured higher mesopore-to-macropore volume ratio favoring electrochemical performance. Isotherm modelling of the adsorbates was compared using models: Langmuir, Freundlich, Langmuir- Freundlich and Temkin.https://www.mdpi.com/2079-4991/12/20/3575hydrogen storagesupercapacitorcarbon captureadsorption isothermhydrothermal carbonizationchemical activation |
| spellingShingle | Al Ibtida Sultana Cadianne Chambers Muzammil M. N. Ahmed Pavithra Pathirathna Toufiq Reza Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal Nanomaterials hydrogen storage supercapacitor carbon capture adsorption isotherm hydrothermal carbonization chemical activation |
| title | Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal |
| title_full | Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal |
| title_fullStr | Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal |
| title_full_unstemmed | Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal |
| title_short | Multifunctional Loblolly Pine-Derived Superactivated Hydrochar: Effect of Hydrothermal Carbonization on Hydrogen and Electron Storage with Carbon Dioxide and Dye Removal |
| title_sort | multifunctional loblolly pine derived superactivated hydrochar effect of hydrothermal carbonization on hydrogen and electron storage with carbon dioxide and dye removal |
| topic | hydrogen storage supercapacitor carbon capture adsorption isotherm hydrothermal carbonization chemical activation |
| url | https://www.mdpi.com/2079-4991/12/20/3575 |
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