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Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline

In the present study, a novel photocatalyst, CQDs@MIL-125(Ti) (CQDs = carbon quantum dots), was prepared via a solvothermal procedure. The photocatalytic properties were tested by the degradation of tetracycline (TC) with a 250 W Xe lamp (λ > 420 nm). Compared with pure MIL-125(Ti), the 10 wt% CQ...

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Detalles Bibliográficos
Autores principales: Li, Zhi, Che, Guangbo, Jiang, Wei, Liu, Lihui, Wang, Hairui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9073379/
https://www.ncbi.nlm.nih.gov/pubmed/35529147
http://dx.doi.org/10.1039/c9ra05600a
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author Li, Zhi
Che, Guangbo
Jiang, Wei
Liu, Lihui
Wang, Hairui
author_facet Li, Zhi
Che, Guangbo
Jiang, Wei
Liu, Lihui
Wang, Hairui
author_sort Li, Zhi
collection PubMed
description In the present study, a novel photocatalyst, CQDs@MIL-125(Ti) (CQDs = carbon quantum dots), was prepared via a solvothermal procedure. The photocatalytic properties were tested by the degradation of tetracycline (TC) with a 250 W Xe lamp (λ > 420 nm). Compared with pure MIL-125(Ti), the 10 wt% CQDs@MIL-125(Ti) photocatalyst can significantly improve the degradation process of TC, and the degradation efficiency can reach 90% within 4 h. The enhancement in the photocatalytic performance is due to the CQDs, which can promote the absorption of visible light and also efficiently accelerate the separation of photogenerated electron–hole pairs. We have also demonstrated that superoxide radicals (·O(2)(−)) and holes (h(+)) play crucial roles in the photocatalytic degradation of TC through capture experiments. The current work provides a new idea for constructing high-efficiency photocatalysts based on MIL-125(Ti).
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spelling pubmed-90733792022-05-06 Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline Li, Zhi Che, Guangbo Jiang, Wei Liu, Lihui Wang, Hairui RSC Adv Chemistry In the present study, a novel photocatalyst, CQDs@MIL-125(Ti) (CQDs = carbon quantum dots), was prepared via a solvothermal procedure. The photocatalytic properties were tested by the degradation of tetracycline (TC) with a 250 W Xe lamp (λ > 420 nm). Compared with pure MIL-125(Ti), the 10 wt% CQDs@MIL-125(Ti) photocatalyst can significantly improve the degradation process of TC, and the degradation efficiency can reach 90% within 4 h. The enhancement in the photocatalytic performance is due to the CQDs, which can promote the absorption of visible light and also efficiently accelerate the separation of photogenerated electron–hole pairs. We have also demonstrated that superoxide radicals (·O(2)(−)) and holes (h(+)) play crucial roles in the photocatalytic degradation of TC through capture experiments. The current work provides a new idea for constructing high-efficiency photocatalysts based on MIL-125(Ti). The Royal Society of Chemistry 2019-10-16 /pmc/articles/PMC9073379/ /pubmed/35529147 http://dx.doi.org/10.1039/c9ra05600a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Li, Zhi
Che, Guangbo
Jiang, Wei
Liu, Lihui
Wang, Hairui
Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title_full Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title_fullStr Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title_full_unstemmed Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title_short Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
title_sort visible-light-driven cqds@mil-125(ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9073379/
https://www.ncbi.nlm.nih.gov/pubmed/35529147
http://dx.doi.org/10.1039/c9ra05600a
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