Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application
The synthesis of zinc oxide (ZnO), with the support of silver (Ag) and Graphene Oxide (GO), was carried out in several stages as a potential photocatalytic material. First, the GO was synthesized from commercial graphite using the Hummers’ method, and ZnO and Ag precursors were prepared. The second...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422008456 |
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| author | Saharman Gea Suhut A. Situmorang Nurhaida Pasaribu Averroes F.R. Piliang Boy Attaurrazaq Reka Mustika Sari Khatarina Meldawati Pasaribu Stergios Goutianos |
| author_facet | Saharman Gea Suhut A. Situmorang Nurhaida Pasaribu Averroes F.R. Piliang Boy Attaurrazaq Reka Mustika Sari Khatarina Meldawati Pasaribu Stergios Goutianos |
| author_sort | Saharman Gea |
| collection | DOAJ |
| description | The synthesis of zinc oxide (ZnO), with the support of silver (Ag) and Graphene Oxide (GO), was carried out in several stages as a potential photocatalytic material. First, the GO was synthesized from commercial graphite using the Hummers’ method, and ZnO and Ag precursors were prepared. The second stage was the electrospinning process, followed by calcination. The solution in the electrospinning process, to produce the nanofibers, was a mixture of polymer (polyvinyl alcohol), zinc acetate, AgNO3, and GO. The fibres produced were thermally treated at 500 C for 2 h. XRD and FTIR analyses confirmed that GO was successfully synthesized from commercial graphite. ZnO and Ag had wurtzite and cubic hexagonal structures based on XRD and TEM characterization. The nanocomposites developed had increased photocatalyst characteristics: low band gap energy, such as 2.98 (ZnO), 2.76 (ZnO–Ag), 2.93 (ZnO-GO), and 2.75 (ZnO–Ag-GO). Furthermore, the nanocomposites had absorption characteristics in the visible light region. Using UV–Visible spectrophotometer, Diffuse Reflectance Spectroscopy, and Photoluminescence, it was explained that the Surface Plasmon Resonance effect possessed by Ag and GO nanoparticles had semiconductor properties that acted as electron trapping, thereby reducing or preventing the occurrence of electron–hole recombination. In conclusion, the ZnO nanocomposites with the addition of Ag and GO could improve the photocatalytic characteristics of ZnO with the potential for direct application in photodegradation of organic and textile waste in water. |
| first_indexed | 2024-04-11T09:45:53Z |
| format | Article |
| id | doaj.art-efd666d663d94a6e802ccb2cf01fd8b6 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-11T09:45:53Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-efd666d663d94a6e802ccb2cf01fd8b62022-12-22T04:31:05ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011927302741Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst applicationSaharman Gea0Suhut A. Situmorang1Nurhaida Pasaribu2Averroes F.R. Piliang3Boy Attaurrazaq4Reka Mustika Sari5Khatarina Meldawati Pasaribu6Stergios Goutianos7Cellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia; Corresponding author.Cellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, IndonesiaDepartment of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, IndonesiaCellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, IndonesiaCellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, IndonesiaCellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, IndonesiaCellulosic and Functional Materials – Research Centre, Universitas Sumatera Utara, Medan, 20155, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, IndonesiaDepartment of Manufacturing and Civil Engineering, Norwegian University of Science and Technology, NO-2802, Gjøvik, NorwayThe synthesis of zinc oxide (ZnO), with the support of silver (Ag) and Graphene Oxide (GO), was carried out in several stages as a potential photocatalytic material. First, the GO was synthesized from commercial graphite using the Hummers’ method, and ZnO and Ag precursors were prepared. The second stage was the electrospinning process, followed by calcination. The solution in the electrospinning process, to produce the nanofibers, was a mixture of polymer (polyvinyl alcohol), zinc acetate, AgNO3, and GO. The fibres produced were thermally treated at 500 C for 2 h. XRD and FTIR analyses confirmed that GO was successfully synthesized from commercial graphite. ZnO and Ag had wurtzite and cubic hexagonal structures based on XRD and TEM characterization. The nanocomposites developed had increased photocatalyst characteristics: low band gap energy, such as 2.98 (ZnO), 2.76 (ZnO–Ag), 2.93 (ZnO-GO), and 2.75 (ZnO–Ag-GO). Furthermore, the nanocomposites had absorption characteristics in the visible light region. Using UV–Visible spectrophotometer, Diffuse Reflectance Spectroscopy, and Photoluminescence, it was explained that the Surface Plasmon Resonance effect possessed by Ag and GO nanoparticles had semiconductor properties that acted as electron trapping, thereby reducing or preventing the occurrence of electron–hole recombination. In conclusion, the ZnO nanocomposites with the addition of Ag and GO could improve the photocatalytic characteristics of ZnO with the potential for direct application in photodegradation of organic and textile waste in water.http://www.sciencedirect.com/science/article/pii/S2238785422008456ElectrospinningPhotocatalystGraphene oxideSilver nanoparticlesZnO |
| spellingShingle | Saharman Gea Suhut A. Situmorang Nurhaida Pasaribu Averroes F.R. Piliang Boy Attaurrazaq Reka Mustika Sari Khatarina Meldawati Pasaribu Stergios Goutianos Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application Journal of Materials Research and Technology Electrospinning Photocatalyst Graphene oxide Silver nanoparticles ZnO |
| title | Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application |
| title_full | Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application |
| title_fullStr | Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application |
| title_full_unstemmed | Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application |
| title_short | Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application |
| title_sort | facile synthesis of zno ag nanocomposite supported by graphene oxide with stabilised band gap and wider visible light region for photocatalyst application |
| topic | Electrospinning Photocatalyst Graphene oxide Silver nanoparticles ZnO |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422008456 |
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