g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution
A simple wet chemical ultrasonic-assisted synthesis method was employed to prepare visible light-driven g-C3N4-ZnO-Co3O4 (GZC) heterojunction photocatalysts. X-ray diffraction (XRD), scanning electromicroscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), ultra...
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Bioinorganic Chemistry and Applications |
| Online Access: | http://dx.doi.org/10.1155/2023/2948342 |
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| author | Mintesinot Tamiru Mengistu Tadele Hunde Wondimu Dinsefa Mensur Andoshe Jung Yong Kim Osman Ahmed Zelekew Fekadu Gashaw Hone Newaymedhin Aberra Tegene Noto Susanto Gultom Ho Won Jang |
| author_facet | Mintesinot Tamiru Mengistu Tadele Hunde Wondimu Dinsefa Mensur Andoshe Jung Yong Kim Osman Ahmed Zelekew Fekadu Gashaw Hone Newaymedhin Aberra Tegene Noto Susanto Gultom Ho Won Jang |
| author_sort | Mintesinot Tamiru Mengistu |
| collection | DOAJ |
| description | A simple wet chemical ultrasonic-assisted synthesis method was employed to prepare visible light-driven g-C3N4-ZnO-Co3O4 (GZC) heterojunction photocatalysts. X-ray diffraction (XRD), scanning electromicroscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), ultraviolet (UV), and electrochemical impedance spectroscopy (EIS) are used to characterize the prepared catalysts. XRD confirms the homogenous phase formation of g-C3N4, ZnO, and Co3O4, and the heterogeneous phase for the composites. The synthesized ZnO and Co3O4 by using cellulose as a template show a rod-like morphology. The specific surface area of the catalytic samples increases due to the cellulose template. The measurements of the energy band gap of a g-C3N4-ZnO-Co3O4 composite showed red-shifted optical absorption to the visible range. The photoluminescence (PL) intensity decreases due to the formation of heterojunction. The PL quenching and EIS result shows that the reduction of the recombination rate and interfacial resistance result in charge carrier kinetic improvement in the catalyst. The photocatalytic performance in the degradation of MB dye of the GZC-3 composite was about 8.2-, 3.3-, and 2.5-fold more than that of the g-C3N4, g-C3N4-ZnO, and g-C3N4-Co3O4 samples. The Mott–Schottky plots of the flat band edge position of g-C3N4, ZnO, Co3O4, and Z-scheme g-C3N4-ZnO-Co3O4 photocatalysts may be created. Based on the stability experiment, GZC-3 shows greater photocatalytic activity after four recycling cycles. As a result, the GZC composite is environmentally friendly and efficient photocatalyst and has the potential to consider in the treatment of dye-contaminated wastewater. |
| format | Article |
| id | doaj-art-9978ab2cf1b94d61a32dabeada1ad3b5 |
| institution | OA Journals |
| issn | 1687-479X |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
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| series | Bioinorganic Chemistry and Applications |
| spelling | doaj-art-9978ab2cf1b94d61a32dabeada1ad3b52025-08-20T02:10:19ZengWileyBioinorganic Chemistry and Applications1687-479X2023-01-01202310.1155/2023/2948342g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous SolutionMintesinot Tamiru Mengistu0Tadele Hunde Wondimu1Dinsefa Mensur Andoshe2Jung Yong Kim3Osman Ahmed Zelekew4Fekadu Gashaw Hone5Newaymedhin Aberra Tegene6Noto Susanto Gultom7Ho Won Jang8Department of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringDepartment of Materials Science and EngineeringPhysics DepartmentPhysics DepartmentDepartment of Materials Science and EngineeringDepartment of Materials Science and Engineering Research Institute of Advanced Materials Seoul National UniversityA simple wet chemical ultrasonic-assisted synthesis method was employed to prepare visible light-driven g-C3N4-ZnO-Co3O4 (GZC) heterojunction photocatalysts. X-ray diffraction (XRD), scanning electromicroscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), ultraviolet (UV), and electrochemical impedance spectroscopy (EIS) are used to characterize the prepared catalysts. XRD confirms the homogenous phase formation of g-C3N4, ZnO, and Co3O4, and the heterogeneous phase for the composites. The synthesized ZnO and Co3O4 by using cellulose as a template show a rod-like morphology. The specific surface area of the catalytic samples increases due to the cellulose template. The measurements of the energy band gap of a g-C3N4-ZnO-Co3O4 composite showed red-shifted optical absorption to the visible range. The photoluminescence (PL) intensity decreases due to the formation of heterojunction. The PL quenching and EIS result shows that the reduction of the recombination rate and interfacial resistance result in charge carrier kinetic improvement in the catalyst. The photocatalytic performance in the degradation of MB dye of the GZC-3 composite was about 8.2-, 3.3-, and 2.5-fold more than that of the g-C3N4, g-C3N4-ZnO, and g-C3N4-Co3O4 samples. The Mott–Schottky plots of the flat band edge position of g-C3N4, ZnO, Co3O4, and Z-scheme g-C3N4-ZnO-Co3O4 photocatalysts may be created. Based on the stability experiment, GZC-3 shows greater photocatalytic activity after four recycling cycles. As a result, the GZC composite is environmentally friendly and efficient photocatalyst and has the potential to consider in the treatment of dye-contaminated wastewater.http://dx.doi.org/10.1155/2023/2948342 |
| spellingShingle | Mintesinot Tamiru Mengistu Tadele Hunde Wondimu Dinsefa Mensur Andoshe Jung Yong Kim Osman Ahmed Zelekew Fekadu Gashaw Hone Newaymedhin Aberra Tegene Noto Susanto Gultom Ho Won Jang g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution Bioinorganic Chemistry and Applications |
| title | g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
| title_full | g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
| title_fullStr | g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
| title_full_unstemmed | g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
| title_short | g-C3N4–Co3O4 Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
| title_sort | g c3n4 co3o4 z scheme junction with green synthesized zno photocatalyst for efficient degradation of methylene blue in aqueous solution |
| url | http://dx.doi.org/10.1155/2023/2948342 |
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