Electrospun Nanofibers: New Concepts, Materials, and Applications

Area of Science:

• Materials Science
• Nanotechnology
• Chemical Engineering

Background:

• Electrospinning is a versatile technique for producing nanofibers with diameters down to tens of nanometers.
• Electrospun nanofibers can be fabricated from diverse materials and engineered with secondary structures (porous, hollow, core-sheath).
• These nanofibers can be functionalized and assembled into ordered or hierarchical structures for various applications.

Purpose of the Study:

• To highlight the capabilities of electrospun nanofibers as porous supports for heterogeneous catalysis.
• To demonstrate the use of electrospun nanofibers as functional scaffolds for tissue regeneration.
• To showcase recent advancements in these two application areas.

Main Methods:

• Fabrication of ceramic nanofibers (e.g., SiO2, TiO2, SnO2, CeO2, ZrO2) for catalytic supports.
• Preparation of polymeric nanofibers with controlled diameter, composition, alignment, and porosity for tissue engineering scaffolds.
• Functionalization of nanofibers with molecular species or nanoparticles.
• Assembly of nanofibers into ordered arrays or hierarchical structures.

Main Results:

• Ceramic nanofibers exhibit high porosity, large surface area, and thermal stability, making them effective supports for noble-metal catalysts (Au, Pt, Pd, Rh).
• Polymeric nanofibers can mimic extracellular matrix architecture, guiding cell behavior for tendon repair, wound healing, and nerve regeneration.
• Nanofiber scaffolds can be engineered to replicate complex anatomical structures, such as tendon-to-bone insertions.

Conclusions:

• Electrospun nanofibers are highly adaptable materials for advanced applications.
• Their unique properties enable significant advancements in heterogeneous catalysis and regenerative medicine.
• Further exploration of electrospun nanofibers promises innovative solutions in diverse scientific and technological fields.