PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS
Antibiotic residues in aquaculture wastewater pose a significant environmental challenge, as conventional wastewater treatment plants are often ineffective in their removal. To overcome this challenge, this study developed TiO2 nanowires on nanotube arrays (TNWs/TNAs) and further enhanced them with...
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| Format: | Article |
| Language: | English |
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Dalat University
2025-05-01
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| Series: | Tạp chí Khoa học Đại học Đà Lạt |
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| Online Access: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1494 |
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| author | Huu Phuoc Le Nguyen Hong Khanh Cao Chi Toan Nguyen Long Quan Dang Thi Hong Nguyen Thi Cam Tuyen Le Chau Minh Vinh Tho Do |
| author_facet | Huu Phuoc Le Nguyen Hong Khanh Cao Chi Toan Nguyen Long Quan Dang Thi Hong Nguyen Thi Cam Tuyen Le Chau Minh Vinh Tho Do |
| author_sort | Huu Phuoc Le |
| collection | DOAJ |
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Antibiotic residues in aquaculture wastewater pose a significant environmental challenge, as conventional wastewater treatment plants are often ineffective in their removal. To overcome this challenge, this study developed TiO2 nanowires on nanotube arrays (TNWs/TNAs) and further enhanced them with Bi2Se2Te nanoparticle (NP) decoration for efficient photocatalytic degradation of metronidazole. The TNWs/TNAs were fabricated through anodization in an aqueous solution of NH4F/ethylene glycol, while Bi2Se2Te NPs were obtained via a plasma-assisted exfoliation technique and subsequently deposited onto the TNWs/TNAs. The photocatalytic efficiency of TNWs/TNAs and Bi2Se2Te-TNWs/TNAs was evaluated by monitoring the degradation of metronidazole under ultraviolet-visible (UV-Vis) illumination using the HPLC-PDA method. All TiO2 nanostructures exhibited the anatase phase and displayed a distinct morphology, characterized by nanowires extending from nanotube arrays. The decoration of Bi2Se2Te nanoparticles onto TNWs/TNAs was visualized through SEM imaging and further validated using EDS, UV-Vis absorption spectroscopy, and Raman spectroscopy analysis. Both TNWs/TNAs and Bi2Se2Te-TNWs/TNAs effectively and rapidly degraded metronidazole, achieving removal efficiencies of 71.8% and 83.0% after 20 minutes of UV-Vis irradiation (100 mW·cm⁻²), respectively. Furthermore, the reaction rate constant of Bi2Se2Te-TNWs/TNAs (85.4 × 10-3 min-1) was higher than that of TNWs/TNAs (60.7×10-3 min-1), which was primarily attributed to the localized surface plasmon resonance (LSPR) effect of Bi2Se2Te NPs and enhanced charge separation within the hybrid Bi2Se2Te-TNWs/TNAs system. These findings demonstrate that Bi2Se2Te-TNWs/TNAs exhibit superior photocatalytic performance for antibiotic degradation, offering a promising strategy for wastewater treatment.
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| format | Article |
| id | doaj-art-77932bbf011a42fc8da57b405a72e9d0 |
| institution | Kabale University |
| issn | 0866-787X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Dalat University |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Đà Lạt |
| spelling | doaj-art-77932bbf011a42fc8da57b405a72e9d02025-08-26T10:36:25ZengDalat UniversityTạp chí Khoa học Đại học Đà Lạt0866-787X2025-05-01153S10.37569/DalatUniversity.15.3S.1494(2025)PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALSHuu Phuoc Le0https://orcid.org/0009-0002-7192-5927Nguyen Hong Khanh Cao1https://orcid.org/0009-0007-6677-119XChi Toan Nguyen2https://orcid.org/0009-0002-3596-4240Long Quan Dang 3https://orcid.org/0009-0003-7243-3382Thi Hong Nguyen4https://orcid.org/0000-0002-3777-0629Thi Cam Tuyen Le5https://orcid.org/0000-0002-0982-6074Chau Minh Vinh Tho Do6https://orcid.org/0000-0003-2148-6436Can Tho University of Medicine and PharmacyCan Tho Medical CollegeTay Do UniversityCan Tho UniversityCan Tho UniversityCan Tho UniversityCan Tho University of Medicine and Pharmacy Antibiotic residues in aquaculture wastewater pose a significant environmental challenge, as conventional wastewater treatment plants are often ineffective in their removal. To overcome this challenge, this study developed TiO2 nanowires on nanotube arrays (TNWs/TNAs) and further enhanced them with Bi2Se2Te nanoparticle (NP) decoration for efficient photocatalytic degradation of metronidazole. The TNWs/TNAs were fabricated through anodization in an aqueous solution of NH4F/ethylene glycol, while Bi2Se2Te NPs were obtained via a plasma-assisted exfoliation technique and subsequently deposited onto the TNWs/TNAs. The photocatalytic efficiency of TNWs/TNAs and Bi2Se2Te-TNWs/TNAs was evaluated by monitoring the degradation of metronidazole under ultraviolet-visible (UV-Vis) illumination using the HPLC-PDA method. All TiO2 nanostructures exhibited the anatase phase and displayed a distinct morphology, characterized by nanowires extending from nanotube arrays. The decoration of Bi2Se2Te nanoparticles onto TNWs/TNAs was visualized through SEM imaging and further validated using EDS, UV-Vis absorption spectroscopy, and Raman spectroscopy analysis. Both TNWs/TNAs and Bi2Se2Te-TNWs/TNAs effectively and rapidly degraded metronidazole, achieving removal efficiencies of 71.8% and 83.0% after 20 minutes of UV-Vis irradiation (100 mW·cm⁻²), respectively. Furthermore, the reaction rate constant of Bi2Se2Te-TNWs/TNAs (85.4 × 10-3 min-1) was higher than that of TNWs/TNAs (60.7×10-3 min-1), which was primarily attributed to the localized surface plasmon resonance (LSPR) effect of Bi2Se2Te NPs and enhanced charge separation within the hybrid Bi2Se2Te-TNWs/TNAs system. These findings demonstrate that Bi2Se2Te-TNWs/TNAs exhibit superior photocatalytic performance for antibiotic degradation, offering a promising strategy for wastewater treatment. https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1494Bi2Se2TeHeterophotocatalystHPLCMetronidazoleTiO2 nanowires on nanotube arrays. |
| spellingShingle | Huu Phuoc Le Nguyen Hong Khanh Cao Chi Toan Nguyen Long Quan Dang Thi Hong Nguyen Thi Cam Tuyen Le Chau Minh Vinh Tho Do PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS Tạp chí Khoa học Đại học Đà Lạt Bi2Se2Te Heterophotocatalyst HPLC Metronidazole TiO2 nanowires on nanotube arrays. |
| title | PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS |
| title_full | PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS |
| title_fullStr | PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS |
| title_full_unstemmed | PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS |
| title_short | PHOTOCATALYTIC DEGRADATION OF METRONIDAZOLE BY \(TiO_2\) AND \(Bi_2\)\(Se_2\)\(Te\)-\(TiO_2\) NANOMATERIALS |
| title_sort | photocatalytic degradation of metronidazole by tio 2 and bi 2 se 2 te tio 2 nanomaterials |
| topic | Bi2Se2Te Heterophotocatalyst HPLC Metronidazole TiO2 nanowires on nanotube arrays. |
| url | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1494 |
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