세미나 이인수 교수 [POSTECH, 화학과] - Nanocrystal Chemistry within Atomic-Thin 2D-Slit-Nanospace
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일시: 2026년 6월 18일 (목) 오후 5시
장소: 과학관 B133호
초록:
Over the past several years, our research has centered on the development of theNanospace-Confined Chemical Reaction (NCCR) strategy, which exploits spatial confinement withinhollow silica nanostructures to direct the synthesis and transformation of nanocrystals (NCs). Byemploying nanostructured silica as a well-defined reaction medium, the NCCR approach enablesaccess to reaction pathways and chemical phenomena that are inaccessible in conventional bulksystems, while simultaneously providing versatile synthetic routes toward structurally and functionally unprecedented nanomaterials. More recently, we have extended the NCCR concept totwo-dimensional (2D) anisotropic nanospaces with few-nanometer-scale thickness, herein referredto as 2D slit nanospaces. This architectural evolution has revealed distinctive evolution and conversion chemistries of confined NCs, governed critically by the atomic-scale thickness and anisotropy of the 2D confinement. In particular, we demonstrate that such extreme nanospaceconfinement enables the growth of highly oriented, anisotropic platinum-group metal (PGM) nanostructures with preferential exposure of unconventional crystallographic surfaces.Theseobservations highlight the decisive role of atomic-thin 2D confinement in dictating nucleation,growth, and surface stabilization processes. Finally, we discuss how these insights can be translated into advanced catalytic and energy-related applications, where precise control over crystal orientation and surface structure is essential for performance enhancement.