Nanosilica‐Confined Synthesis of Orthogonally Active Catalytic Metal Nanocrystals in the Compartmentalized Carbon Framework. Issue 25 (9th May 2019)

• Record Type: Journal Article
• Authors: Lee, Seon Hee; Kumari, Nitee; Dutta, Soumen; Jin, Xing; Kumar, Amit; Koo, Jung Hun; Lee, In Su
• Is Part Of: Small. Volume 15:Issue 25(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-09
• Subjects: cascade reactions -- catalysis -- compartmentalization -- nanoconfinement -- porous carbon; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201901280
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Multifunctionalized porous catalytic nanoarchitectures are highly desirable for a variety of chemical transformations; however, selective installation of different catalysts with spatial and functional precision working synergistically and predictably, is highly challenging. Here, a synthetic strategy is developed toward the customizable combination of orthogonally reactive metal nanocrystals within interconnected carbon‐cavities as a compartmentalized framework by employing aminated‐silica‐directed thermal solid‐state nanoconfined synthesis of metal nanocrystals and endotemplating concomitant carbonization‐mediated interlocking, as key processes. The main advantage of the strategy is the facility to choose any combination of metals, which can be further employed according to the desired application. The strategically synthesized compartmentalized multifunctional catalytic architectures of Pd‐Pt@Com‐CF regulate the O2 ‐mediated selective cascade oxidation reaction converting alcohol to acid with high yield and selectivity; and another Pt‐Ir@Com‐CF platform is demonstrated as a bifunctional electrocatalyst for oxygen reduction/evolution reactions. Abstract : A highly customizable nanosilica‐mediated and chemically directed confined endotemplating strategy toward compartmentalized carbon‐based nanocatalytic platforms for efficient cascade and multimodal catalytic reactions.