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g-C(3)N(4)–Co(3)O(4) 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-C(3)N(4)-ZnO-Co(3)O(4) (GZC) heterojunction photocatalysts. X-ray diffraction (XRD), scanning electromicroscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10260312/ https://www.ncbi.nlm.nih.gov/pubmed/37313425 http://dx.doi.org/10.1155/2023/2948342 |
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author | Tamiru Mengistu, Mintesinot Wondimu, Tadele Hunde Andoshe, Dinsefa Mensur Kim, Jung Yong Zelekew, Osman Ahmed Hone, Fekadu Gashaw Tegene, Newaymedhin Aberra Gultom, Noto Susanto Jang, Ho Won |
author_facet | Tamiru Mengistu, Mintesinot Wondimu, Tadele Hunde Andoshe, Dinsefa Mensur Kim, Jung Yong Zelekew, Osman Ahmed Hone, Fekadu Gashaw Tegene, Newaymedhin Aberra Gultom, Noto Susanto Jang, Ho Won |
author_sort | Tamiru Mengistu, Mintesinot |
collection | PubMed |
description | A simple wet chemical ultrasonic-assisted synthesis method was employed to prepare visible light-driven g-C(3)N(4)-ZnO-Co(3)O(4) (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-C(3)N(4), ZnO, and Co(3)O(4), and the heterogeneous phase for the composites. The synthesized ZnO and Co(3)O(4) 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-C(3)N(4)-ZnO-Co(3)O(4) 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-C(3)N(4), g-C(3)N(4)-ZnO, and g-C(3)N(4)-Co(3)O(4) samples. The Mott–Schottky plots of the flat band edge position of g-C(3)N(4), ZnO, Co(3)O(4), and Z-scheme g-C(3)N(4)-ZnO-Co(3)O(4) 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 | Online Article Text |
id | pubmed-10260312 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-102603122023-06-13 g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution Tamiru Mengistu, Mintesinot Wondimu, Tadele Hunde Andoshe, Dinsefa Mensur Kim, Jung Yong Zelekew, Osman Ahmed Hone, Fekadu Gashaw Tegene, Newaymedhin Aberra Gultom, Noto Susanto Jang, Ho Won Bioinorg Chem Appl Research Article A simple wet chemical ultrasonic-assisted synthesis method was employed to prepare visible light-driven g-C(3)N(4)-ZnO-Co(3)O(4) (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-C(3)N(4), ZnO, and Co(3)O(4), and the heterogeneous phase for the composites. The synthesized ZnO and Co(3)O(4) 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-C(3)N(4)-ZnO-Co(3)O(4) 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-C(3)N(4), g-C(3)N(4)-ZnO, and g-C(3)N(4)-Co(3)O(4) samples. The Mott–Schottky plots of the flat band edge position of g-C(3)N(4), ZnO, Co(3)O(4), and Z-scheme g-C(3)N(4)-ZnO-Co(3)O(4) 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. Hindawi 2023-06-05 /pmc/articles/PMC10260312/ /pubmed/37313425 http://dx.doi.org/10.1155/2023/2948342 Text en Copyright © 2023 Mintesinot Tamiru Mengistu et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Tamiru Mengistu, Mintesinot Wondimu, Tadele Hunde Andoshe, Dinsefa Mensur Kim, Jung Yong Zelekew, Osman Ahmed Hone, Fekadu Gashaw Tegene, Newaymedhin Aberra Gultom, Noto Susanto Jang, Ho Won g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title |
g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title_full |
g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title_fullStr |
g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title_full_unstemmed |
g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title_short |
g-C(3)N(4)–Co(3)O(4) Z-Scheme Junction with Green-Synthesized ZnO Photocatalyst for Efficient Degradation of Methylene Blue in Aqueous Solution |
title_sort | g-c(3)n(4)–co(3)o(4) z-scheme junction with green-synthesized zno photocatalyst for efficient degradation of methylene blue in aqueous solution |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10260312/ https://www.ncbi.nlm.nih.gov/pubmed/37313425 http://dx.doi.org/10.1155/2023/2948342 |
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