Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub>
Fe(III)-modified clinoptilolites (Fe-CPs) were prepared by hydrothermal treatment. The collapse of the heulandite skeletons was avoided by adjusting the pH value using HCl solution, showing the maximum relative crystallinity of the Fe-CPs at an optimal pH of 1.3. The competitive exchange performance...
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MDPI AG
2023-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/7/2889 |
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| author | Chunlei Wan Xueqing Cui Ming Liu Bang Xu Jihong Sun Shiyang Bai |
| author_facet | Chunlei Wan Xueqing Cui Ming Liu Bang Xu Jihong Sun Shiyang Bai |
| author_sort | Chunlei Wan |
| collection | DOAJ |
| description | Fe(III)-modified clinoptilolites (Fe-CPs) were prepared by hydrothermal treatment. The collapse of the heulandite skeletons was avoided by adjusting the pH value using HCl solution, showing the maximum relative crystallinity of the Fe-CPs at an optimal pH of 1.3. The competitive exchange performances between Fe<sup>3+</sup> ions and H<sup>+</sup> with Na<sup>+</sup> (and K<sup>+</sup>) suggested that the exchange sites were more easily occupied by H<sup>+</sup>. Various characterizations verified that the hydrothermal treatments had a strong influence on the dispersion and morphology of the isolated and clustered Fe species. The high catalytic activity of the oxygen evolution reaction indicated the insertion of Fe<sup>3+</sup> into the skeletons and the occurrences of isomorphic substitution. The fractal evolutions revealed that hydrothermal treatments with the increase of Fe content strongly affected the morphologies of Fe species with rough and disordered surfaces. Meanwhile, the Fe(III)-modified performances of the CPs were systematically investigated, showing that the maximum Fe-exchange capacity was up to 10.6 mg/g. Their thermodynamic parameters and kinetic performances suggested that the Fe(III)-modified procedures belonged to spontaneous, endothermic, and entropy-increasing behaviors. Finally, their adsorption capacities of CO<sub>2</sub> at 273 and 298 K were preliminarily evaluated, showing high CO<sub>2</sub> adsorption capacity (up to 1.67 mmol/g at 273 K). |
| first_indexed | 2024-03-11T05:30:59Z |
| format | Article |
| id | doaj.art-aa23629a4740420c875c79a63b243f58 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T05:30:59Z |
| publishDate | 2023-03-01 |
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| series | Molecules |
| spelling | doaj.art-aa23629a4740420c875c79a63b243f582023-11-17T17:10:26ZengMDPI AGMolecules1420-30492023-03-01287288910.3390/molecules28072889Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub>Chunlei Wan0Xueqing Cui1Ming Liu2Bang Xu3Jihong Sun4Shiyang Bai5Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, ChinaFe(III)-modified clinoptilolites (Fe-CPs) were prepared by hydrothermal treatment. The collapse of the heulandite skeletons was avoided by adjusting the pH value using HCl solution, showing the maximum relative crystallinity of the Fe-CPs at an optimal pH of 1.3. The competitive exchange performances between Fe<sup>3+</sup> ions and H<sup>+</sup> with Na<sup>+</sup> (and K<sup>+</sup>) suggested that the exchange sites were more easily occupied by H<sup>+</sup>. Various characterizations verified that the hydrothermal treatments had a strong influence on the dispersion and morphology of the isolated and clustered Fe species. The high catalytic activity of the oxygen evolution reaction indicated the insertion of Fe<sup>3+</sup> into the skeletons and the occurrences of isomorphic substitution. The fractal evolutions revealed that hydrothermal treatments with the increase of Fe content strongly affected the morphologies of Fe species with rough and disordered surfaces. Meanwhile, the Fe(III)-modified performances of the CPs were systematically investigated, showing that the maximum Fe-exchange capacity was up to 10.6 mg/g. Their thermodynamic parameters and kinetic performances suggested that the Fe(III)-modified procedures belonged to spontaneous, endothermic, and entropy-increasing behaviors. Finally, their adsorption capacities of CO<sub>2</sub> at 273 and 298 K were preliminarily evaluated, showing high CO<sub>2</sub> adsorption capacity (up to 1.67 mmol/g at 273 K).https://www.mdpi.com/1420-3049/28/7/2889clinoptiloliteextra-framework Fefractal structuresisomorphous substitutionFe speciesadsorptive separations |
| spellingShingle | Chunlei Wan Xueqing Cui Ming Liu Bang Xu Jihong Sun Shiyang Bai Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> Molecules clinoptilolite extra-framework Fe fractal structures isomorphous substitution Fe species adsorptive separations |
| title | Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> |
| title_full | Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> |
| title_fullStr | Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> |
| title_full_unstemmed | Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> |
| title_short | Structure Features and Physicochemical Performances of Fe-Contained Clinoptilolites Obtained via the Aqueous Exchange of the Balanced Cations and Isomorphs Substitution of the Heulandite Skeletons for Electrocatalytic Activity of Oxygen Evolution Reaction and Adsorptive Performance of CO<sub>2</sub> |
| title_sort | structure features and physicochemical performances of fe contained clinoptilolites obtained via the aqueous exchange of the balanced cations and isomorphs substitution of the heulandite skeletons for electrocatalytic activity of oxygen evolution reaction and adsorptive performance of co sub 2 sub |
| topic | clinoptilolite extra-framework Fe fractal structures isomorphous substitution Fe species adsorptive separations |
| url | https://www.mdpi.com/1420-3049/28/7/2889 |
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