Shape-Dependent Catalytic Activity of Gold and Bimetallic Nanoparticles in the Reduction of Methylene Blue by Sodium Borohydride

In this study the catalytic activity of different gold and bimetallic nanoparticle solutions towards reduction methylene blue by sodium borohydride as a model reaction is investigated. By utilizing differently shaped nanoparticles, i.e., spheres, cubes, prisms rods well gold–palladium gold–platinum core-shell nanorods, we evaluate effect catalyst surface area available area, shape nanoparticles impact added secondary metals in case nanorods. We track UV/Vis measurements range 190–850 nm every 60 s. It assumed that do not only act unit transferring electrons from but can promote electron transfer upon plasmonic excitation. testing particle shapes, could indeed demonstrate an excluding and/or ligands. All showed higher turnover than their reference, whereby nanoprisms exhibited 100% no further absorption peak was detected. The rate constant k also determined revealed overall quicker reactions when or were catalyst, again these highest for nanoprisms. Furthermore, comparing it be shown through addition catalytically active second metal platinum palladium, dye accelerated degradation constants compared to those pure results explore assist exploring applications.