Aluminum-Silica Core-Shell Nanoparticles via Nonthermal Plasma Synthesis.

ABSTRACT: Aluminum nanoparticles (Al NPs) are interesting for energetic and plasmonic applications due to their enhanced size-dependent properties. Passivating the surface of these particles is necessary to avoid forming a native oxide layer, which can degrade energetic and optical characteristics. This work utilized a radiofrequency (RF)-driven capacitively coupled argon/hydrogen plasma to form surface-modified Al NPs from aluminum trichloride (AlCl₃) vapor and 5% silane in argon (dilute SiH₄). Varying the power and dilute SiH₄ flow rate in the afterglow of the plasma led to the formation of varying nanoparticle morphologies: Al-SiO₂ core-shell, Si-Al₂O₃ core-shell, and Al-Si Janus particles. Scanning transmission electron microscopy

SUBMITTER: Cameron T 

PROVIDER: S-EPMC11820144 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature