Oxyanions represent a class of emerging contaminants due to their increasing concentration in water and known negative health impacts. Perchlorate and bromate are two oxyanions that are particularly difficult to remove because of their high stability. Hydrogenation is a common approach for removal, but is limited by catalyst cost. This research reports on the development of a metal nanoparticle-carbon microsphere composite that minimizes metal content, thus optimizing cost. The catalysts are made using ultrasonic spray pyrolysis (USP), producing highly porous carbon microspheres (CM) with metallic nanoparticles embedded in them. To date we have studies of palladium and a variety of bimetallic systems. Our current results will be presented.

Development of metal nanoparticle-carbon microsphere composites for the catalytic removal of oxyanions from water

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ACS Spring 2023

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