B, S co-doped g-C3N4 hollow nanotubes/MIL-53 heterostructure: A MOF derived high performance Z scheme photocatalyst for bisphenol A degradation and H2 evolution

Abstract

This research successfully integrated an iron-based metal-organic framework (MIL-53) onto boron and sulfur co-doped hollow g-C₃N₄ (CNBS) nanotubes, resulting in the formation of the CNBS@MIL-53 (M-CNBS) heterojunction with a Z-scheme architecture. This configuration significantly enhances the photodegradation of Bisphenol A (BPA) and facilitates the photocatalytic hydrogen evolution reaction. The M-CNBS structure offers a substantial specific surface area and minimizes interfacial resistance, thereby promoting rapid electron transport. Compared to other synthesized materials, the M-CNBS heterostructure demonstrates exceptional photocatalytic performance, achieving 99 % degradation of BPA and producing 2800 μmol of hydrogen within 60 min of exposure to visible light. Additionally, the study proposes a potential reaction mechanism and degradation pathway for BPA over M-CNBS. The findings underscore the remarkable photocatalytic activity of the Z-scheme M-CNBS in BPA degradation and hydrogen production, suggesting its potential application in developing hollow g-C₃N₄@MIL-53 MOF structures as effective solutions for wastewater treatment and hydrogen generation, addressing pressing global environmental and energy challenges.