Unveiling the in-situ formation mechanism of nano-fir tree-like architecture: Yolk-shell structure enables the development of an advanced multifunctional template

Abstract

The combination of electronic regulation and architectural engineering within a multifunctional material is a combination that can yield a potent strategy for simultaneously enhancing its catalytic performance and electrochemical response. We herein developed MIm@Ni-Co@CoCH/IL nanocomposite material that was used to construct a three-dimensional (3D) Fir tree-like structure grown on a magnesium alloy substrate as a highly efficient multifunctional coating. The new network design is intended to improve the overall performance of the porous coating by utilizing pulsed plasma electrolysis (PPE), in combination with a layered double hydroxide (LDH) backbone and zeolitic imidazolate framework (ZIF), which is known to increase electrochemical efficiency and achieve an architectural upgrade that enhances the functionality of the coating. By interlocking the hybrid branches architecture with the surface motifs of the solid platform, we can create a hierarchical structure that resembles a fir tree-like structure grown on an inorganic bed. Interestingly, this new approach serves to create an efficient electron transport system that can act as a functionalized pathway for creating highly efficient and multifunctional materials. The tunable morphology of the hybrid architecture allows it to exhibit both electrochemical stability and catalytic activity toward the radical degradation of organic pollutants in various aqueous environments. This dual-functionality makes the hybrid architecture a promising material for addressing environmental pollution. Our findings shed light on the potential of exploring nanocomposites-modified yolk-shell catalysts as electrochemically stable and catalytically active materials, which can serve as the foundation for next-generation multifunctional frameworks.