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Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications

This study reports on the synthesis and characterization of ZnO–Ag@AgBr/SBA-15 composites using natural halloysite clay from Yenbai Province, Vietnam, as a silica aluminum source. The synthesized materials demonstrated visible light absorption with a band gap energy range of 2.63–2.98 eV. The dual Z...

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Autores principales: Pham, Giang T. T., Vu, Hoa T., Pham, Tham Thi, Thanh, Nguyen Ngoc, Thuy, Van Ngo, Tran, Hung Quang, Doan, Huan V., Nguyen, Manh B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116339/
https://www.ncbi.nlm.nih.gov/pubmed/37091624
http://dx.doi.org/10.1039/d3ra01856c
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author Pham, Giang T. T.
Vu, Hoa T.
Pham, Tham Thi
Thanh, Nguyen Ngoc
Thuy, Van Ngo
Tran, Hung Quang
Doan, Huan V.
Nguyen, Manh B.
author_facet Pham, Giang T. T.
Vu, Hoa T.
Pham, Tham Thi
Thanh, Nguyen Ngoc
Thuy, Van Ngo
Tran, Hung Quang
Doan, Huan V.
Nguyen, Manh B.
author_sort Pham, Giang T. T.
collection PubMed
description This study reports on the synthesis and characterization of ZnO–Ag@AgBr/SBA-15 composites using natural halloysite clay from Yenbai Province, Vietnam, as a silica aluminum source. The synthesized materials demonstrated visible light absorption with a band gap energy range of 2.63–2.98 eV. The dual Z-scheme ZnO–Ag@AgBr/SBA-15 heterojunction exhibited superior catalytic performance compared to ZnO/SBA-15 and Ag@AgBr/SBA-15, owing to its improved electron transfer and reduced electron and hole recombination rate. In particular, the photocatalytic efficiency of ZnO–Ag@AgBr/SBA-15 was evaluated for the removal of harmful phenol red from wastewater under visible light irradiation. The photocatalytic process was optimized by varying the phenol red concentration, pH, and catalyst dosage, and showed that 98.8% of phenol red in 100 mL wastewater (pH = 5.5) can be removed using 40 mg of 20%ZnO–Ag@AgBr/SBA-15 within 120 min. Furthermore, the degradation pathway of phenol red was predicted using liquid chromatographic-mass spectrometry (LC-MS). Finally, the photocatalytic process was successfully tested using water samples collected from the four main domestic waste sources in Hanoi, including the To Lich River, the Hong River, the Hoan Kiem Lake, and the West Lake, demonstrating the high potential of the ZnO–Ag@AgBr/SBA-15 photocatalyst for phenol red degradation in real-world wastewater treatment applications.
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spelling pubmed-101163392023-04-21 Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications Pham, Giang T. T. Vu, Hoa T. Pham, Tham Thi Thanh, Nguyen Ngoc Thuy, Van Ngo Tran, Hung Quang Doan, Huan V. Nguyen, Manh B. RSC Adv Chemistry This study reports on the synthesis and characterization of ZnO–Ag@AgBr/SBA-15 composites using natural halloysite clay from Yenbai Province, Vietnam, as a silica aluminum source. The synthesized materials demonstrated visible light absorption with a band gap energy range of 2.63–2.98 eV. The dual Z-scheme ZnO–Ag@AgBr/SBA-15 heterojunction exhibited superior catalytic performance compared to ZnO/SBA-15 and Ag@AgBr/SBA-15, owing to its improved electron transfer and reduced electron and hole recombination rate. In particular, the photocatalytic efficiency of ZnO–Ag@AgBr/SBA-15 was evaluated for the removal of harmful phenol red from wastewater under visible light irradiation. The photocatalytic process was optimized by varying the phenol red concentration, pH, and catalyst dosage, and showed that 98.8% of phenol red in 100 mL wastewater (pH = 5.5) can be removed using 40 mg of 20%ZnO–Ag@AgBr/SBA-15 within 120 min. Furthermore, the degradation pathway of phenol red was predicted using liquid chromatographic-mass spectrometry (LC-MS). Finally, the photocatalytic process was successfully tested using water samples collected from the four main domestic waste sources in Hanoi, including the To Lich River, the Hong River, the Hoan Kiem Lake, and the West Lake, demonstrating the high potential of the ZnO–Ag@AgBr/SBA-15 photocatalyst for phenol red degradation in real-world wastewater treatment applications. The Royal Society of Chemistry 2023-04-20 /pmc/articles/PMC10116339/ /pubmed/37091624 http://dx.doi.org/10.1039/d3ra01856c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Pham, Giang T. T.
Vu, Hoa T.
Pham, Tham Thi
Thanh, Nguyen Ngoc
Thuy, Van Ngo
Tran, Hung Quang
Doan, Huan V.
Nguyen, Manh B.
Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title_full Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title_fullStr Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title_full_unstemmed Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title_short Exploring the potential of ZnO–Ag@AgBr/SBA-15 Z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
title_sort exploring the potential of zno–ag@agbr/sba-15 z-scheme heterostructure for efficient wastewater treatment: synthesis, characterization, and real-world applications
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116339/
https://www.ncbi.nlm.nih.gov/pubmed/37091624
http://dx.doi.org/10.1039/d3ra01856c
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