Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling
A series of Zeolitic imidazole framework-8 (ZIF-8) clusters supported on graphene oxide (ZIF-8@GO) nanocomposites were prepared by varying the ratios of ZIF-8 to GO. The resultant nanocomposites were characterized using various techniques, such as Scanning Electron Microscope (SEM), Transmission Ele...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/4/436 |
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| author | Elizabeth Gaobodiwe Masibi Thollwana Andretta Makhetha Richard Motlhaletsi Moutloali |
| author_facet | Elizabeth Gaobodiwe Masibi Thollwana Andretta Makhetha Richard Motlhaletsi Moutloali |
| author_sort | Elizabeth Gaobodiwe Masibi |
| collection | DOAJ |
| description | A series of Zeolitic imidazole framework-8 (ZIF-8) clusters supported on graphene oxide (ZIF-8@GO) nanocomposites were prepared by varying the ratios of ZIF-8 to GO. The resultant nanocomposites were characterized using various techniques, such as Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analysis (TGA), Fourier Transform Infrared (FTIR) and Raman spectroscopy. These nanocomposites were incorporated into the thin film layer during interfacial polymerisation process of m-phenylenediamine (aqueous phase which contained the dispersed nanocomposites) and trimesoyl chloride (TMC, organic phase) at room temperature onto polyethersulfone (PES) ultrafiltration (UF) support membrane. The membrane surface morphology, cross section and surface roughness were characterized using SEM and AFM, respectively. Compared to the baseline membranes, the thin film nanofiltration (TFN) membranes exhibited improved pure water flux (from 1.66 up to 7.9 L.m<sup>−2</sup>h<sup>−1</sup>), salt rejection (from 40 to 98%) and fouling resistance (33 to 88%). Optimum ZIF-8 to GO ratio was established as indicated in observed pure water flux, salt rejection and BSA fouling resistance. Therefore, a balance in hydrophilic and porous effect of the filler was observed to lead to this observed membrane behaviour suggesting that careful filler design can result in performance gain for thin film composite (TFC) membranes for water treatment application. |
| first_indexed | 2024-03-09T04:24:33Z |
| format | Article |
| id | doaj.art-167705d5e8d0485bbd977f5bd7da348f |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T04:24:33Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-167705d5e8d0485bbd977f5bd7da348f2023-12-03T13:41:59ZengMDPI AGMembranes2077-03752022-04-0112443610.3390/membranes12040436Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA FoulingElizabeth Gaobodiwe Masibi0Thollwana Andretta Makhetha1Richard Motlhaletsi Moutloali2Department of Chemical Sciences, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South AfricaDepartment of Chemical Sciences, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South AfricaDSI/Mintek Nanotechnology Innovation Centre—UJ Water Research Node, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South AfricaA series of Zeolitic imidazole framework-8 (ZIF-8) clusters supported on graphene oxide (ZIF-8@GO) nanocomposites were prepared by varying the ratios of ZIF-8 to GO. The resultant nanocomposites were characterized using various techniques, such as Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), thermogravimetric analysis (TGA), Fourier Transform Infrared (FTIR) and Raman spectroscopy. These nanocomposites were incorporated into the thin film layer during interfacial polymerisation process of m-phenylenediamine (aqueous phase which contained the dispersed nanocomposites) and trimesoyl chloride (TMC, organic phase) at room temperature onto polyethersulfone (PES) ultrafiltration (UF) support membrane. The membrane surface morphology, cross section and surface roughness were characterized using SEM and AFM, respectively. Compared to the baseline membranes, the thin film nanofiltration (TFN) membranes exhibited improved pure water flux (from 1.66 up to 7.9 L.m<sup>−2</sup>h<sup>−1</sup>), salt rejection (from 40 to 98%) and fouling resistance (33 to 88%). Optimum ZIF-8 to GO ratio was established as indicated in observed pure water flux, salt rejection and BSA fouling resistance. Therefore, a balance in hydrophilic and porous effect of the filler was observed to lead to this observed membrane behaviour suggesting that careful filler design can result in performance gain for thin film composite (TFC) membranes for water treatment application.https://www.mdpi.com/2077-0375/12/4/436interfacial polymerizationgraphene oxidenanofiltrationthin film composite membraneszeolitic imidazole framework-8 |
| spellingShingle | Elizabeth Gaobodiwe Masibi Thollwana Andretta Makhetha Richard Motlhaletsi Moutloali Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling Membranes interfacial polymerization graphene oxide nanofiltration thin film composite membranes zeolitic imidazole framework-8 |
| title | Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling |
| title_full | Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling |
| title_fullStr | Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling |
| title_full_unstemmed | Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling |
| title_short | Effect of the Incorporation of ZIF-8@GO into the Thin-Film Membrane on Salt Rejection and BSA Fouling |
| title_sort | effect of the incorporation of zif 8 go into the thin film membrane on salt rejection and bsa fouling |
| topic | interfacial polymerization graphene oxide nanofiltration thin film composite membranes zeolitic imidazole framework-8 |
| url | https://www.mdpi.com/2077-0375/12/4/436 |
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