Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye
In this research, ZnO nanocomposite doped with cerium and silver/polyaniline (Ce-Ag-ZnO/PANI) was synthesized as a photocatalyst for eliminating Acid Blue 113 (AB113) dye. XRD, FESEM, EDX, TEM, UV–Vis, and FTIR analyses were employed to investigate the synthesized samples. Photocatalytic tests demon...
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302402067X |
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| author | Mortaza Elahian Najmeh Ahmadi Amir Abbas Heidari Nezamaddin Mengelizadeh Davoud Balarak |
| author_facet | Mortaza Elahian Najmeh Ahmadi Amir Abbas Heidari Nezamaddin Mengelizadeh Davoud Balarak |
| author_sort | Mortaza Elahian |
| collection | DOAJ |
| description | In this research, ZnO nanocomposite doped with cerium and silver/polyaniline (Ce-Ag-ZnO/PANI) was synthesized as a photocatalyst for eliminating Acid Blue 113 (AB113) dye. XRD, FESEM, EDX, TEM, UV–Vis, and FTIR analyses were employed to investigate the synthesized samples. Photocatalytic tests demonstrated the better efficiency of synthesized nanocomposite compared to other samples (ZnO and Ce-Ag-ZnO). The result presented that after 60 min of testing, 100 % of AB113 dye was destroyed by this nanocomposite. Energy consumption during the process was calculated to be between 21.3 and 37.8 kWh/m³, depending on radiation intensity ranging from 8 to 32 W. The mineralization level was determined by the percentage of Total Organic Carbon (TOC) removal, while the degree of biodegradability was estimated based on the BOD₅/COD (biological oxygen demand over 5 days/chemical oxygen demand) and BOD₅/TOC ratios. The TOC removal percentage was 0.81 %. Also, the BOD5/COD ratio increased from 0.21 to 0.72, and BOD5/TOC increased from 0.61 to 1.27. Scavenging experiments showed that ●OH and O2•– and holes, all three factors contributed to the degradation of AB113, although the main role was played by the •OH. The findings ascertained that the degradation kinetics follows the pseudo-first-order kinetic (PFO) model. The reaction rate constant for AB113 degradation with Ce-Ag-ZnO/PANI was equal to 0.096 min−1, which was 8.13 and 11.4 times higher than the dye degradation with ZnO and Ce-Ag-ZnO catalysts. Due to its efficient and stable photocatalytic activity, the Ce-Ag-ZnO/PANI synthesized in our study was considered an operative photocatalyst in degrading organic pollutants individually or simultaneously. |
| format | Article |
| id | doaj-art-4e54880191714b349e072835673aba49 |
| institution | DOAJ |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-4e54880191714b349e072835673aba492025-08-20T02:50:55ZengElsevierResults in Engineering2590-12302025-03-012510382410.1016/j.rineng.2024.103824Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dyeMortaza Elahian0Najmeh Ahmadi1Amir Abbas Heidari2Nezamaddin Mengelizadeh3Davoud Balarak4Department of chemical Engineering, Amirkabir University of Technology, Tehran, IranStudent Research Committee, Zahedan University of Medical Sciences, Zahedan, IranDepartment of chemical Engineering, Shiraz University, Shiraz, IranDepartment of Environmental Health Engineering, Faculty of Health, Larestan University of medical Sciences, Larestan, IranDepartment of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran; Corresponding author.In this research, ZnO nanocomposite doped with cerium and silver/polyaniline (Ce-Ag-ZnO/PANI) was synthesized as a photocatalyst for eliminating Acid Blue 113 (AB113) dye. XRD, FESEM, EDX, TEM, UV–Vis, and FTIR analyses were employed to investigate the synthesized samples. Photocatalytic tests demonstrated the better efficiency of synthesized nanocomposite compared to other samples (ZnO and Ce-Ag-ZnO). The result presented that after 60 min of testing, 100 % of AB113 dye was destroyed by this nanocomposite. Energy consumption during the process was calculated to be between 21.3 and 37.8 kWh/m³, depending on radiation intensity ranging from 8 to 32 W. The mineralization level was determined by the percentage of Total Organic Carbon (TOC) removal, while the degree of biodegradability was estimated based on the BOD₅/COD (biological oxygen demand over 5 days/chemical oxygen demand) and BOD₅/TOC ratios. The TOC removal percentage was 0.81 %. Also, the BOD5/COD ratio increased from 0.21 to 0.72, and BOD5/TOC increased from 0.61 to 1.27. Scavenging experiments showed that ●OH and O2•– and holes, all three factors contributed to the degradation of AB113, although the main role was played by the •OH. The findings ascertained that the degradation kinetics follows the pseudo-first-order kinetic (PFO) model. The reaction rate constant for AB113 degradation with Ce-Ag-ZnO/PANI was equal to 0.096 min−1, which was 8.13 and 11.4 times higher than the dye degradation with ZnO and Ce-Ag-ZnO catalysts. Due to its efficient and stable photocatalytic activity, the Ce-Ag-ZnO/PANI synthesized in our study was considered an operative photocatalyst in degrading organic pollutants individually or simultaneously.http://www.sciencedirect.com/science/article/pii/S259012302402067XCe-Ag-ZnO/PANIAcid blue 113 dyeDegradationEnergy consumption |
| spellingShingle | Mortaza Elahian Najmeh Ahmadi Amir Abbas Heidari Nezamaddin Mengelizadeh Davoud Balarak Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye Results in Engineering Ce-Ag-ZnO/PANI Acid blue 113 dye Degradation Energy consumption |
| title | Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| title_full | Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| title_fullStr | Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| title_full_unstemmed | Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| title_short | Preparation of a polyaniline-supported Ce-Ag-doped ZnO nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| title_sort | preparation of a polyaniline supported ce ag doped zno nanocomposite for efficient photocatalytic degradation of acid blue 113 dye |
| topic | Ce-Ag-ZnO/PANI Acid blue 113 dye Degradation Energy consumption |
| url | http://www.sciencedirect.com/science/article/pii/S259012302402067X |
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