A simple method was found to deposit palladium (0) nanoparticles within the fibers of nonwoven brown cotton fabric (NBCF) using the naturally occurring polyphenolic tannins contained within the fibers as a reducing agent. The prepared fabric retained Suzuki-Miyaura type catalytic activity for ten experimental repetitions, producing excellent yields without column chromatography. In a series of experiments to determine the scope of the application, product yields were affected by steric hindrance and aryl halide selection, with para-substituted and iodoaryl reactants providing the highest product yields. Catalytic loading was lowered to sub-milliequivalents levels in scaled reactions without loss of activity or yield. Deposition of palladium nanoparticles within cross-sections of cotton fiber was confirmed by scanning electron microscopy (SEM), inductively coupled photospectroscopy (ICP) and transmission electron microscopy (TEM). NBCF offers an inexpensive, sustainable, biodegradable and non-toxic substrate for metal nanoparticle inclusions.

Preparation of palladium nanoparticles within nonwoven brown cotton fabric: Application in Suzuki-Miyaura cross-coupling reactions

ACS Fall 2020 Virtual Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.