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

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

doi:10.1016/j.apcatb.2020.119033

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

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

Research output: Contribution to journal › Article › peer-review

355 Citations (Scopus)

Abstract

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.

Original language	English
Article number	119033
Journal	Applied Catalysis B: Environmental
Volume	272
DOIs	https://doi.org/10.1016/j.apcatb.2020.119033
Publication status	Published - 5 Sept 2020
Externally published	Yes

Keywords

Cr(VI) reduction
MIL-101(Fe)/g-CN
Visible-light photocatalyst
Z-scheme heterojunction
bisphenol-A degradation

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2020.119033

Cite this

Zhao, F., Liu, Y., Hammouda, S. B., 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, 272, Article 119033. https://doi.org/10.1016/j.apcatb.2020.119033

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abstract = "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.",

keywords = "Cr(VI) reduction, MIL-101(Fe)/g-CN, Visible-light photocatalyst, Z-scheme heterojunction, bisphenol-A degradation",

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AU - Liu, Yongpeng

AU - Hammouda, Samia Ben

AU - Doshi, Bhairavi

AU - Guijarro, Néstor

AU - Min, Xiaobo

AU - Tang, Chong Jian

AU - Sillanpää, Mika

AU - Sivula, Kevin

AU - Wang, Shaobin

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