Capping and Passivation of Aluminum Nanoparticles: Aluminum-Induced Alkene Polymerization

摘要

We report here on the use of alkenes as passivating agents for aluminum nanoparticles (Al NPs). These core-shell materials have high active Al contents (＞70%) and increased air stability (～15 weeks). The electron-rich Al core appears to initiate alkene polymerization, as is shown by the absence of alkene resonances in FTIR spectra. We also present results from PXRD, DSC, and TGA which support the presence of metallic Al along with TEM images which yield particle size and morphology information.