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MIL-101(Fe)/g-C3N4 for enhanced visible-light-driven photocatalysis toward simultaneous reduction of Cr(VI) and oxidation of bisphenol A in aqueous media

Zhao, Feiping; Liu, Yongpeng; Ben Hammouda, Samia; Bhairavi, Doshi; Guijarro, Néstor; Min, Xiaobo; Tang, Chong-Jian; Sillanpää, Mika; Sivula, Kevin; Wang, Shaobin (2020-04-21)

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zhao_et_al_mil-101_aam.pdf (3.929Mb)
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Post-print / Final draft

Zhao, Feiping
Liu, Yongpeng
Ben Hammouda, Samia
Bhairavi, Doshi
Guijarro, Néstor
Min, Xiaobo
Tang, Chong-Jian
Sillanpää, Mika
Sivula, Kevin
Wang, Shaobin
21.04.2020

Applied Catalysis B: Environmental

272

Elsevier

School of Engineering Science

https://doi.org/10.1016/j.apcatb.2020.119033
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2020042922930

Tiivistelmä

Heterostructured composites with an excellent photocatalytic activity have attracted increasing attention because of their great application in environmental remediation. Herein, a MIL-101(Fe)/g-C3N4 heterojunction was synthesized via in-situ growth of MIL-101(Fe) onto g-C3N4 surface. The heterojunctions were applied as a bifunctional photocatalyst for simultaneous reduction of Cr(VI) and degradation of bisphenol-A (BPA) under visible light and exhibited an obvious enhancement in photocatalytic performance compared with MIL-101(Fe) or g-C3N4. The improved activity could be attributed to the enhanced light absorption and efficient charge carrier separation by forming a direct Z-scheme heterojunction with appropriate band alignment between MIL-101(Fe) and g-C3N4. The radical trapping and electron spin resonance showed that photo-generated electrons are responsible for the reduction of Cr(VI) and BPA degradation, following an oxygen-induced pathway. This work provides new insight into the construction of metal-free semiconductor/MOFs heterojunctions as a bifunctional visible-light-driven photocatalyst for efficient and simultaneous treatment of multiple toxic pollutants in water.

Lähdeviite

Zhao, F., Liu, Y., Ben Hammouda, S., Doshi, B., Guijarro, N., Min, X., Tang, C.-J., Sillanpää, M., Sivula, K., Wang, S. (2020). MIL-101(Fe)/g-C3N4 for enhanced visible-light-driven photocatalysis toward simultaneous reduction of Cr(VI) and oxidation of bisphenol A in aqueous media. Applied Catalysis B: Environmental, vol. 272. DOI: 10.1016/j.apcatb.2020.119033

Alkuperäinen verkko-osoite

https://www.sciencedirect.com/science/article/pii/S0926337320304483?via%3Dihub
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