Flame spray pyrolysis: An enabling technology for nanoparticles design and fabrication

Area of Science:

• Materials Science
• Chemical Engineering
• Nanotechnology

Background:

• Flame spray pyrolysis (FSP) is derived from established vapor-fed flame aerosol reactors.
• Historically used for commodity powders like titania and silica.
• Significant advancements in FSP technology over the last decade.

Purpose of the Study:

• To highlight the versatility and scalability of FSP for nanomaterial synthesis.
• To showcase innovations in FSP reactor engineering and precursor chemistry.
• To discuss current research challenges and future outlooks for combustion-synthesized materials.

Main Methods:

• Utilizes combustion of precursor sprays in a flame.
• Employs advanced FSP reactor designs.
• Incorporates innovative precursor chemistry.

Main Results:

• Enables rapid and scalable synthesis of nanostructured materials.
• Facilitates production of pure or mixed oxides, metals, and alloys.
• Allows for unique morphologies like core-shell structures and nanorods.
• Produces loosely-agglomerated powders and particulate films.

Conclusions:

• FSP is a powerful, one-step process for creating functional nanomaterials.
• Innovations have expanded FSP's applicability to complex materials.
• Future research will focus on next-generation engineered combustion-made materials.