DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS
Electrospun nanofibers are attractive alternatives to traditional adsorbents due to their high surface-to-volume ratio, porosity, and loading capacity. Functionalization of nanofibers with macrocycles can contribute to further enhancement in selective adsorption of ions. In this study, polycaprolact...
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| Format: | Article |
| Language: | English |
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Bursa Uludag University
2023-04-01
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| Series: | Uludağ University Journal of The Faculty of Engineering |
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| Online Access: | https://dergipark.org.tr/tr/download/article-file/2844121 |
| _version_ | 1797777611375509504 |
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| author | Özlem İpek Kalaoğlu Altan |
| author_facet | Özlem İpek Kalaoğlu Altan |
| author_sort | Özlem İpek Kalaoğlu Altan |
| collection | DOAJ |
| description | Electrospun nanofibers are attractive alternatives to traditional adsorbents due to their high surface-to-volume ratio, porosity, and loading capacity. Functionalization of nanofibers with macrocycles can contribute to further enhancement in selective adsorption of ions. In this study, polycaprolactone (PCL) nanofibers were functionalized with a crown ether, namely dibenzo-18-crown-6 (DB18C6), and the potential of the resultant electrospun PCL/DB18C6 nanofibers for selective ion adsorption, particularly the selective recovery for K+, was investigated. The morphology, chemical structure and thermal properties of PCL/DB18C6 nanofibers were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The average diameter of PCL/DB18C6 nanofibers was 529±196 nm. Single-ion adsorption experiments indicated that the adsorption capacity for K+ ion was 137 mg·g−1 and the selectivity sequence was found as K+>Ca2+>Na+. The adsorption selectivity coefficients of K+/Ca2+ and K+/Na+ were calculated respectively as 1.37 and 4.28 for single ion experiments and as 1.13 and 5.11 for mixed ion adsorptions which illustrate that the difference between the adsorption capacities of K+ and Ca2+ decreased in mixed ion adsorption experiments. Overall results demonstrate that the electrospun PCL/DB18C6 nanofibers are amenable for use as polymer adsorbents for the selective ion recovery. |
| first_indexed | 2024-03-12T23:06:18Z |
| format | Article |
| id | doaj.art-1149c6c15c9845518da808e487b06fe4 |
| institution | Directory Open Access Journal |
| issn | 2148-4155 |
| language | English |
| last_indexed | 2024-03-12T23:06:18Z |
| publishDate | 2023-04-01 |
| publisher | Bursa Uludag University |
| record_format | Article |
| series | Uludağ University Journal of The Faculty of Engineering |
| spelling | doaj.art-1149c6c15c9845518da808e487b06fe42023-07-18T15:47:11ZengBursa Uludag UniversityUludağ University Journal of The Faculty of Engineering2148-41552023-04-01281536610.17482/uumfd.12220841779DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONSÖzlem İpek Kalaoğlu Altan0İSTANBUL TEKNİK ÜNİVERSİTESİElectrospun nanofibers are attractive alternatives to traditional adsorbents due to their high surface-to-volume ratio, porosity, and loading capacity. Functionalization of nanofibers with macrocycles can contribute to further enhancement in selective adsorption of ions. In this study, polycaprolactone (PCL) nanofibers were functionalized with a crown ether, namely dibenzo-18-crown-6 (DB18C6), and the potential of the resultant electrospun PCL/DB18C6 nanofibers for selective ion adsorption, particularly the selective recovery for K+, was investigated. The morphology, chemical structure and thermal properties of PCL/DB18C6 nanofibers were characterized by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The average diameter of PCL/DB18C6 nanofibers was 529±196 nm. Single-ion adsorption experiments indicated that the adsorption capacity for K+ ion was 137 mg·g−1 and the selectivity sequence was found as K+>Ca2+>Na+. The adsorption selectivity coefficients of K+/Ca2+ and K+/Na+ were calculated respectively as 1.37 and 4.28 for single ion experiments and as 1.13 and 5.11 for mixed ion adsorptions which illustrate that the difference between the adsorption capacities of K+ and Ca2+ decreased in mixed ion adsorption experiments. Overall results demonstrate that the electrospun PCL/DB18C6 nanofibers are amenable for use as polymer adsorbents for the selective ion recovery.https://dergipark.org.tr/tr/download/article-file/2844121elektroeğirmenanolifdibenzo-18-taç-6polikaprolaktonadsorbanelectrospinningnanofibersdibenzo-18-crown-6polycaprolactoneadsorbent |
| spellingShingle | Özlem İpek Kalaoğlu Altan DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS Uludağ University Journal of The Faculty of Engineering elektroeğirme nanolif dibenzo-18-taç-6 polikaprolakton adsorban electrospinning nanofibers dibenzo-18-crown-6 polycaprolactone adsorbent |
| title | DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS |
| title_full | DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS |
| title_fullStr | DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS |
| title_full_unstemmed | DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS |
| title_short | DIBENZO-18-CROWN-6/POLYCAPROLACTONE COMPOSITE NANOFIBERS FOR SELECTIVE ADSORPTION OF CATIONS |
| title_sort | dibenzo 18 crown 6 polycaprolactone composite nanofibers for selective adsorption of cations |
| topic | elektroeğirme nanolif dibenzo-18-taç-6 polikaprolakton adsorban electrospinning nanofibers dibenzo-18-crown-6 polycaprolactone adsorbent |
| url | https://dergipark.org.tr/tr/download/article-file/2844121 |
| work_keys_str_mv | AT ozlemipekkalaoglualtan dibenzo18crown6polycaprolactonecompositenanofibersforselectiveadsorptionofcations |