Ferrocene-modified Uio-66-NH2 hybrids with g-C3N4 as enhanced photocatalysts for degradation of bisphenol A under visible light

• Published in: Journal of hazardous materials Vol. 436; p. 129052
• Main Authors: Huang, Zhikun, Yu, Haojie, Wang, Li, Liu, Xiaowei, Ren, Shuning, Liu, Jinyi
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.08.2022
• Subjects: Bisphenol A; Ferrocene modified Uio-66-NH2; Graphitic carbon nitride; Photocatalysis; Bisphenol A; Ferrocene modified Uio-66-NH2; Photocatalysis; Graphitic carbon nitride
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2022.129052

Designing graphitic carbon nitride (CN) based heterostructured photocatalysts with high catalytic activity is highly desired for peroxymonosulfate (PMS) activation to degrade organic pollutants from water. Herein, a novel heterostructured composite (U-F@CN) consisting of ferrocene-modified Uio-66-NH2 (U-F) and CN was synthesized. The U-F@CN exhibited superior photocatalytic performance to degrade bisphenol A (BPA) in the presence of PMS under visible light. The experimental results indicated that BPA could be removed entirely by U-F@CN within 60 min under visible light irradiation. In addition, the outstanding photocatalytic activity could be maintained at high level in a wide pH range, appropriate temperature region and natural water condition. Benefiting from the good chemical stability, outstanding optical property and in-situ generation of interfacial heterojunction of U-F@CN, the interfacial transport of photogenerated charges could follow the Z-scheme mechanism, which can accelerate the charge separation and transport to yield abundant reactive active species (ROS) to efficiently active PMS and under visible light. This work provides a novel approach to design CN-based heterostructured photocatalysts with high stability and superior photocatalytic activity for environmental remediation. [Display omitted] •The Fc group was grafted on the ligands of Uio-66-NH2via –C=N- covalent bond.•The chemical environment of U-F-X was directly proofed.•The Z-scheme heterojunction mechanism of BPA degradation was confirmed.