Unique Necklace-Like Phenol Formaldehyde Resin Nanofibers: Scalable Templating Synthesis, Casting Films, and Their Superhydrophobic Property

1D necklace‐like nanostructures have exhibited different potential applications due to their unique geometry and property. However, their macroscopic and controllable synthesis has been a challenge. Herein, a facile and scalable template‐directed hydrothermal process is reported to synthesize a series of necklace‐like phenol‐formaldehyde resin (PFR) wrapped nanocables. The 1D templates involved in the synthesis can be various, such as tellurium nanowires (TeNWs), silver nanowires, and carbon nanotubes. After removal of the TeNWs template, pure PFR necklace‐like nanofibers with different morphologies can be prepared. Owning to their multiscale roughness and formed 3D network structures, such necklace‐like PFR nanofibers can be further used as building blocks for constructing robust superhydrophobic coatings with excellent mechanical properties on various substrates. Necklace‐like phenol formaldehyde resin nanofibers with controllable morphologies can be synthesized on a large scale by a template‐directed hydrothermal method (see the figure), which exhibits great application for constructing robust superhydrophobic surfaces on a variety of substrates.