A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide
<p dir="ltr">MAX phases are the parent materials used for the formation of MXenes, and are generally obtained by etching using the highly corrosive acid HF. To develop a more environmentally friendly approach for the synthesis of MXenes, in this work, titanium aluminum carbide MAX ph...
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| منشور في: |
2022
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إضافة وسم
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| _version_ | 1864513519730294784 |
|---|---|
| author | Jibran Iqbal (4522111) |
| author2 | Kashif Rasool (2542492) Fares Howari (5618576) Yousef Nazzal (5618585) Tapati Sarkar (1263999) Asif Shahzad (4577137) |
| author2_role | author author author author author |
| author_facet | Jibran Iqbal (4522111) Kashif Rasool (2542492) Fares Howari (5618576) Yousef Nazzal (5618585) Tapati Sarkar (1263999) Asif Shahzad (4577137) |
| author_role | author |
| dc.creator.none.fl_str_mv | Jibran Iqbal (4522111) Kashif Rasool (2542492) Fares Howari (5618576) Yousef Nazzal (5618585) Tapati Sarkar (1263999) Asif Shahzad (4577137) |
| dc.date.none.fl_str_mv | 2022-09-19T03:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3390/nano12183253 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/A_Hydrofluoric_Acid-Free_Green_Synthesis_of_Magnetic_M_Ti2CTx_Nanostructures_for_the_Sequestration_of_Cesium_and_Strontium_Radionuclide/25513891 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Materials engineering MAX phase magnetic nanostructure radionuclide alkalization radioactive waste water treatment |
| dc.title.none.fl_str_mv | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">MAX phases are the parent materials used for the formation of MXenes, and are generally obtained by etching using the highly corrosive acid HF. To develop a more environmentally friendly approach for the synthesis of MXenes, in this work, titanium aluminum carbide MAX phase (Ti<sub>2</sub>AlC) was fabricated and etched using NaOH. Further, magnetic properties were induced during the etching process in a single-step etching process that led to the formation of a magnetic composite. By carefully controlling etching conditions such as etching agent concentration and time, different structures could be produced (denoted as <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub>). Magnetic nanostructures with unique physico-chemical characteristics, including a large number of binding sites, were utilized to adsorb radionuclide Sr<sup>2+</sup> and Cs<sup>+</sup> cations from different matrices, including deionized, tap, and seawater. The produced adsorbents were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The synthesized materials were found to be very stable in the aqueous phase, compared with corrosive acid-etched MXenes, acquiring a distinctive structure with oxygen-containing functional moieties. Sr<sup>2+</sup> and Cs<sup>+</sup> removal efficiencies of <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub> were assessed via conventional batch adsorption experiments. <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub><i>-A</i><sub><em>III</em></sub> showed the highest adsorption performance among other <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub> phases, with maximum adsorption capacities of 376.05 and 142.88 mg/g for Sr<sup>2+</sup> and Cs<sup>+</sup>, respectively, which are among the highest adsorption capacities reported for comparable adsorbents such as graphene oxide and MXenes. Moreover, in seawater, the removal efficiencies for Sr<sup>2+</sup> and Cs<sup>+</sup> were greater than 93% and 31%, respectively. Analysis of the removal mechanism validates the electrostatic interactions between <i>M.Ti</i><sub><em>2</em></sub><i>C-A</i><sub><em>III</em></sub> and radionuclides.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Nanomaterials<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/nano12183253" target="_blank">https://dx.doi.org/10.3390/nano12183253</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_00f4cd86aa1810f759ef1e061808f92d |
| identifier_str_mv | 10.3390/nano12183253 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/25513891 |
| publishDate | 2022 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium RadionuclideJibran Iqbal (4522111)Kashif Rasool (2542492)Fares Howari (5618576)Yousef Nazzal (5618585)Tapati Sarkar (1263999)Asif Shahzad (4577137)EngineeringChemical engineeringMaterials engineeringMAX phasemagnetic nanostructureradionuclidealkalizationradioactive wastewater treatment<p dir="ltr">MAX phases are the parent materials used for the formation of MXenes, and are generally obtained by etching using the highly corrosive acid HF. To develop a more environmentally friendly approach for the synthesis of MXenes, in this work, titanium aluminum carbide MAX phase (Ti<sub>2</sub>AlC) was fabricated and etched using NaOH. Further, magnetic properties were induced during the etching process in a single-step etching process that led to the formation of a magnetic composite. By carefully controlling etching conditions such as etching agent concentration and time, different structures could be produced (denoted as <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub>). Magnetic nanostructures with unique physico-chemical characteristics, including a large number of binding sites, were utilized to adsorb radionuclide Sr<sup>2+</sup> and Cs<sup>+</sup> cations from different matrices, including deionized, tap, and seawater. The produced adsorbents were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The synthesized materials were found to be very stable in the aqueous phase, compared with corrosive acid-etched MXenes, acquiring a distinctive structure with oxygen-containing functional moieties. Sr<sup>2+</sup> and Cs<sup>+</sup> removal efficiencies of <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub> were assessed via conventional batch adsorption experiments. <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub><i>-A</i><sub><em>III</em></sub> showed the highest adsorption performance among other <i>M.Ti</i><sub><em>2</em></sub><i>CT</i><sub><em>x</em></sub> phases, with maximum adsorption capacities of 376.05 and 142.88 mg/g for Sr<sup>2+</sup> and Cs<sup>+</sup>, respectively, which are among the highest adsorption capacities reported for comparable adsorbents such as graphene oxide and MXenes. Moreover, in seawater, the removal efficiencies for Sr<sup>2+</sup> and Cs<sup>+</sup> were greater than 93% and 31%, respectively. Analysis of the removal mechanism validates the electrostatic interactions between <i>M.Ti</i><sub><em>2</em></sub><i>C-A</i><sub><em>III</em></sub> and radionuclides.</p><p dir="ltr"><br></p><h2>Other Information</h2><p dir="ltr">Published in: Nanomaterials<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/nano12183253" target="_blank">https://dx.doi.org/10.3390/nano12183253</a></p>2022-09-19T03:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3390/nano12183253https://figshare.com/articles/journal_contribution/A_Hydrofluoric_Acid-Free_Green_Synthesis_of_Magnetic_M_Ti2CTx_Nanostructures_for_the_Sequestration_of_Cesium_and_Strontium_Radionuclide/25513891CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/255138912022-09-19T03:00:00Z |
| spellingShingle | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide Jibran Iqbal (4522111) Engineering Chemical engineering Materials engineering MAX phase magnetic nanostructure radionuclide alkalization radioactive waste water treatment |
| status_str | publishedVersion |
| title | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| title_full | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| title_fullStr | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| title_full_unstemmed | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| title_short | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| title_sort | A Hydrofluoric Acid-Free Green Synthesis of Magnetic M.Ti2CTx Nanostructures for the Sequestration of Cesium and Strontium Radionuclide |
| topic | Engineering Chemical engineering Materials engineering MAX phase magnetic nanostructure radionuclide alkalization radioactive waste water treatment |