Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride
Semiconductor based photocatalysis is considered as an effective and sustainable approach for the efficient treatment of effluents containing organic dyes and pharmaceuticals. Herein, visible light responsive g-C3N4/ NiFe2O4 (CN/NF) composite photocatalysts were designed by sol-gel auto-combustion a...
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Elsevier
2024-12-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523924000758 |
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| author | Subhasish Mishra Lopamudra Acharya S. Sharmila Kali Sanjay Rashmi Acharya |
| author_facet | Subhasish Mishra Lopamudra Acharya S. Sharmila Kali Sanjay Rashmi Acharya |
| author_sort | Subhasish Mishra |
| collection | DOAJ |
| description | Semiconductor based photocatalysis is considered as an effective and sustainable approach for the efficient treatment of effluents containing organic dyes and pharmaceuticals. Herein, visible light responsive g-C3N4/ NiFe2O4 (CN/NF) composite photocatalysts were designed by sol-gel auto-combustion assisted calcination method using ethylene glycol (EG) as a chelating agent. Bidentate nature and lower molecular weight of EG favour slow hydrolysis of Ni2+ and Fe3+ ions followed by formation of homogenous gel phase which under auto-combustion produced NF precursors. Calcination of the mixture of dicyandiamide (DCDA) and predetermined amount of NF precursors at 550 °C for 4 h resulted in the formation of CN/NF nanocomposites in which NF nanoparticles are anchored on thick plates of porous CN. The construction of CN/NF S-scheme heterojunctions was established through XPS studies and scavenging tests. The 10CN/NF nanocomposite exhibited superior photocatalytic Rhodamine B (RhB) degradation efficiency (98.6 %) which is 2.7 and 3.1 folds superior than that of pure NF and CN respectively. Additionally, the photocatalytic performance of 10CN/NF for tetracycline hydrochloride (TCH) degradation was found to be 84.32 %. The degradation efficiency was around 1.75 and 2.6 times higher than that was observed for pristine NF and CN correspondingly. The current study will bring fresh insights into the synthesis of CN/NF heterojunctions with an S-scheme charge transfer channel for the efficient treatment of waste waters containing dyes and antibiotics. |
| format | Article |
| id | doaj-art-d7b4b63cd6ef4724a85ec663247a2856 |
| institution | Kabale University |
| issn | 2666-5239 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj-art-d7b4b63cd6ef4724a85ec663247a28562024-12-08T06:12:49ZengElsevierApplied Surface Science Advances2666-52392024-12-0124100647Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochlorideSubhasish Mishra0Lopamudra Acharya1S. Sharmila2Kali Sanjay3Rashmi Acharya4Department of Chemistry, I.T.E.R., Siksha ‘O’ Anusandhan deemed to be University, Bhubaneswar, Odisha 751030, IndiaCentre for Nano Science and Nano Technology, ITER, Siksha ‘O’ Anusandhan Deemed to be University, Bhubaneswar, Odisha 751030, IndiaHydro & Electrometallurgy Division, CSIR-Institute of Mineral and Materials Technology (IMMT), Bhubaneswar 751013, Odisha, IndiaHydro & Electrometallurgy Division, CSIR-Institute of Mineral and Materials Technology (IMMT), Bhubaneswar 751013, Odisha, IndiaDepartment of Chemistry, I.T.E.R., Siksha ‘O’ Anusandhan deemed to be University, Bhubaneswar, Odisha 751030, India; Corresponding author.Semiconductor based photocatalysis is considered as an effective and sustainable approach for the efficient treatment of effluents containing organic dyes and pharmaceuticals. Herein, visible light responsive g-C3N4/ NiFe2O4 (CN/NF) composite photocatalysts were designed by sol-gel auto-combustion assisted calcination method using ethylene glycol (EG) as a chelating agent. Bidentate nature and lower molecular weight of EG favour slow hydrolysis of Ni2+ and Fe3+ ions followed by formation of homogenous gel phase which under auto-combustion produced NF precursors. Calcination of the mixture of dicyandiamide (DCDA) and predetermined amount of NF precursors at 550 °C for 4 h resulted in the formation of CN/NF nanocomposites in which NF nanoparticles are anchored on thick plates of porous CN. The construction of CN/NF S-scheme heterojunctions was established through XPS studies and scavenging tests. The 10CN/NF nanocomposite exhibited superior photocatalytic Rhodamine B (RhB) degradation efficiency (98.6 %) which is 2.7 and 3.1 folds superior than that of pure NF and CN respectively. Additionally, the photocatalytic performance of 10CN/NF for tetracycline hydrochloride (TCH) degradation was found to be 84.32 %. The degradation efficiency was around 1.75 and 2.6 times higher than that was observed for pristine NF and CN correspondingly. The current study will bring fresh insights into the synthesis of CN/NF heterojunctions with an S-scheme charge transfer channel for the efficient treatment of waste waters containing dyes and antibiotics.http://www.sciencedirect.com/science/article/pii/S2666523924000758g-C3N4/ NiFe2O4S-schemeSol-gel auto-combustionPhotocatalysisPhoto-FentonDye degradation |
| spellingShingle | Subhasish Mishra Lopamudra Acharya S. Sharmila Kali Sanjay Rashmi Acharya Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride Applied Surface Science Advances g-C3N4/ NiFe2O4 S-scheme Sol-gel auto-combustion Photocatalysis Photo-Fenton Dye degradation |
| title | Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride |
| title_full | Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride |
| title_fullStr | Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride |
| title_full_unstemmed | Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride |
| title_short | Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride |
| title_sort | designing g c3n4 nife2o4 s scheme heterojunctions for efficient photocatalytic degradation of rhodamine b and tetracycline hydrochloride |
| topic | g-C3N4/ NiFe2O4 S-scheme Sol-gel auto-combustion Photocatalysis Photo-Fenton Dye degradation |
| url | http://www.sciencedirect.com/science/article/pii/S2666523924000758 |
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