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MOF-derived Co3O4@P-doped carbon nitride/ α-Fe2O3 nanocomposite as a dual Z-scheme photocatalyst for persulfate mediated Bisphenol-A degradation.
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- Additional Information
- Abstract:
• Co 3 O 4 /phosphorus-doped g-C 3 N 4 /α-Fe 2 O 3 ternary composite derived using MOF precursors. • Ternary composite exhibits dual Z-scheme photocatalytic degradation mechanism. • Ternary composite shows higher degradation efficiency of 99.3 %. • Ternary composite possesses high structural stability and reusability. In this study, a Co 3 O 4 /phosphorus-doped g-C 3 N 4 /α-Fe 2 O 3 (Co 3 O 4 @P-CN/α-Fe 2 O 3) composite was synthesized by a two-step method using respective MOF precursors. Initially, amine-functionalized Fe-MOF (Fe-MIL-88b) was co-condensed with phosphonitrilic trimer and melamine in the presence of triethylamine, resulting in a crosslinked polymer of phosphazene-coated Fe-MIL88b (Pz/Fe-MIL-88b). Subsequent Pz/Fe-MIL-88b calcination at 550 °C yielded a P-doped g-carbon nitride (P-CN)/α-Fe 2 O 3 composite. Furthermore, ZIF-67 was co-doped with the P-CN/α-Fe 2 O 3 composite through ultrasonic dispersion, followed by thermal calcination at 350 °C, yielding Co 3 O 4 @P-CN/α-Fe 2 O 3. However, the hybrid ternary composite exhibited a dual Z-scheme heterojunction in persulfate (PS)-mediated bisphenol-A (BPA) degradation under visible light. Co 3 O 4 @P-CN/α-Fe 2 O 3 demonstrated superior degradation efficiency (99.3 %) with rapid photocatalytic kinetics (0.0663 min−1) for BPA degradation compared to the binary composite and P-CN. The magnetic Co 3 O 4 @P-CN/α-Fe 2 O 3 composite exhibited high structural stability and reusability, achieving over 95 % BPA degradation after five cycles under visible light. [Display omitted] [ABSTRACT FROM AUTHOR]
- Abstract:
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