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Nanosilica‐Confined Synthesis of Orthogonally Active Catalytic Metal Nanocrystals in the Compartmentalized Carbon Framework
Author(s) -
Lee Seon Hee,
Kumari Nitee,
Dutta Soumen,
Jin Xing,
Kumar Amit,
Koo Jung Hun,
Lee In Su
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201901280
Subject(s) - bifunctional , catalysis , carbonization , materials science , electrocatalyst , nanocrystal , nanotechnology , carbon fibers , metal , chemical engineering , chemistry , electrochemistry , organic chemistry , electrode , composite number , scanning electron microscope , engineering , composite material , metallurgy
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 O 2 ‐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.