Site-dependent selectivity in oxidation reactions on single Pt nanoparticles

• DOI: 10.1039/d0cp00642d
• Publication Date: 2020-03-13T11:03:23Z
• Authors: Shahar Dery; Suhong Kim; Daniel Feferman; Hillel Mehlman; F. Dean Toste; Elad Gross
• Keywords: IR nanospectroscopy; 02 engineering and technology; Catalytic nanoparticles; 0210 nano-technology; N-heterocyclic carbene; 01 natural sciences; 3. Good health; 0104 chemical sciences

Site-dependent selectivity in oxidation reactions on Pt nanoparticles was identified by conducting IR nanospectroscopy measurements while using allyl-functionalized N-heterocyclic carbenes (allyl-NHCs) as probe molecules. Following exposure to oxidizing conditions the allyl groups NHCs that were located center of oxidized hydroxyl those nanoparticle's periphery into carboxylic acid. The superior reactivity correlated higher density low coordinated atoms these surface sites.