Fabrication and characterization of nickel ferrite encapsulated silica particles bearing triazine as an effective reusable solid base nanocatalyst for synthesis of 4H-chromenes under mild conditions

Key Points

• The central aim is to develop a novel reusable solid base nanocatalyst for synthesizing 4H-chromenes.
• Design and preparation of a core-shell nanocomposite in four steps.
• Characterization performed using FT-IR, XRD, FE-SEM, and BET.
• Immobilization of nickel ferrite on a triazine-based silica particle.
• The nanocomposite effectively catalyzed the synthesis of 4H-chromenes under mild conditions.
• Demonstrated reusability as a solid base nanocatalyst after multiple cycles.
• Characterization confirmed successful encapsulation and structural integrity of the catalyst.