Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride
Metallic Co NPs@poly(vinylidene fluoride-co- hexafluoropropylene) nanofibers (PVFH NFs) were successfully synthesized with the help of electrospinning and in situ reduction of Co<sup>2+</sup> ions onto the surface of PVFH membrane. Synthesis of PVFH NFs containing 10, 20, 30, and 40 wt%...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/3/597 |
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| author | Ahmed Abutaleb Ibrahim M. Maafa Nasser Zouli Ayman Yousef M. M. El-Halwany |
| author_facet | Ahmed Abutaleb Ibrahim M. Maafa Nasser Zouli Ayman Yousef M. M. El-Halwany |
| author_sort | Ahmed Abutaleb |
| collection | DOAJ |
| description | Metallic Co NPs@poly(vinylidene fluoride-co- hexafluoropropylene) nanofibers (PVFH NFs) were successfully synthesized with the help of electrospinning and in situ reduction of Co<sup>2+</sup> ions onto the surface of PVFH membrane. Synthesis of PVFH NFs containing 10, 20, 30, and 40 wt% of cobalt acetate tetrahydrate was achieved. Physiochemical techniques were used to confirm the formation of metallic Co@PVFH NFs. High catalytic activity of Co@PVFH NFs in the dehydrogenation sodium borohydride (SBH) was demonstrated. The formulation with 40 wt% Co proved to have the greatest performance in comparison to the others. Using 1 mmol of SBH and 100 mg of Co@PVFH NFs, 110 mL of H<sub>2</sub> was produced in 19 min at a temperature of 25 °C, but only 56, 73, and 89 mL were produced using 10, 20, and 30 wt% Co, respectively. With the rise of catalyst concentration and reaction temperature, the amount of hydrogen generated increased. By raising the temperature from 25 to 55 °C, the activation energy was lowered to be 35.21 kJ mol<sup>−1</sup> and the yield of H<sub>2</sub> generation was raised to 100% in only 6 min. The kinetic study demonstrated that the reaction was pseudo-first order in terms of the amount of catalyst utilized and pseudo-zero order in terms of the SBH concentration. In addition, after six cycles of hydrolysis, the catalyst showed outstanding stability. The suggested catalyst has potential applications in H<sub>2</sub> generation through hydrolysis of sodium borohydride due to its high catalytic activity and flexibility of recycling. |
| first_indexed | 2024-03-11T09:27:59Z |
| format | Article |
| id | doaj.art-0937afa8446d4212a02c6c3eb3cbb5ef |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T09:27:59Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0937afa8446d4212a02c6c3eb3cbb5ef2023-11-16T17:47:50ZengMDPI AGPolymers2073-43602023-01-0115359710.3390/polym15030597Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium BorohydrideAhmed Abutaleb0Ibrahim M. Maafa1Nasser Zouli2Ayman Yousef3M. M. El-Halwany4Department of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Mathematics and Physics Engineering, College of Engineering, Mansoura University, El-Mansoura 35516, EgyptMetallic Co NPs@poly(vinylidene fluoride-co- hexafluoropropylene) nanofibers (PVFH NFs) were successfully synthesized with the help of electrospinning and in situ reduction of Co<sup>2+</sup> ions onto the surface of PVFH membrane. Synthesis of PVFH NFs containing 10, 20, 30, and 40 wt% of cobalt acetate tetrahydrate was achieved. Physiochemical techniques were used to confirm the formation of metallic Co@PVFH NFs. High catalytic activity of Co@PVFH NFs in the dehydrogenation sodium borohydride (SBH) was demonstrated. The formulation with 40 wt% Co proved to have the greatest performance in comparison to the others. Using 1 mmol of SBH and 100 mg of Co@PVFH NFs, 110 mL of H<sub>2</sub> was produced in 19 min at a temperature of 25 °C, but only 56, 73, and 89 mL were produced using 10, 20, and 30 wt% Co, respectively. With the rise of catalyst concentration and reaction temperature, the amount of hydrogen generated increased. By raising the temperature from 25 to 55 °C, the activation energy was lowered to be 35.21 kJ mol<sup>−1</sup> and the yield of H<sub>2</sub> generation was raised to 100% in only 6 min. The kinetic study demonstrated that the reaction was pseudo-first order in terms of the amount of catalyst utilized and pseudo-zero order in terms of the SBH concentration. In addition, after six cycles of hydrolysis, the catalyst showed outstanding stability. The suggested catalyst has potential applications in H<sub>2</sub> generation through hydrolysis of sodium borohydride due to its high catalytic activity and flexibility of recycling.https://www.mdpi.com/2073-4360/15/3/597PVFH NFscobalthydrolysishydrogensodium borohydrideelectrospinning |
| spellingShingle | Ahmed Abutaleb Ibrahim M. Maafa Nasser Zouli Ayman Yousef M. M. El-Halwany Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride Polymers PVFH NFs cobalt hydrolysis hydrogen sodium borohydride electrospinning |
| title | Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride |
| title_full | Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride |
| title_fullStr | Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride |
| title_full_unstemmed | Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride |
| title_short | Electrospun Co Nanoparticles@PVDF-HFP Nanofibers as Efficient Catalyst for Dehydrogenation of Sodium Borohydride |
| title_sort | electrospun co nanoparticles pvdf hfp nanofibers as efficient catalyst for dehydrogenation of sodium borohydride |
| topic | PVFH NFs cobalt hydrolysis hydrogen sodium borohydride electrospinning |
| url | https://www.mdpi.com/2073-4360/15/3/597 |
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