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Inorganic Chemistry

Core-shell materials

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Full-Text Articles in Nanoscience and Nanotechnology

Thermally Stable Encapsulated Intermetallic And Bimetallic Nanoparticles For Heterogeneous Catalysis, Raghu Maligal Ganesh Jan 2017

Thermally Stable Encapsulated Intermetallic And Bimetallic Nanoparticles For Heterogeneous Catalysis, Raghu Maligal Ganesh

Graduate Theses and Dissertations

Intermetallic compounds have shown promise as efficient heterogeneous catalysts, displaying improved performance over their monometallic parent metals for chemical transformations. Furthermore, colloidal intermetallic nanoparticles (iNPs) afford additional improvements via increased catalyst surface area and enhanced catalytic performance. However, these iNPs are not efficiently protected against sintering during thermal treatment procedures such as catalyst regeneration, resulting in a loss of their active surface area. Herein, we have successfully developed porous encapsulation strategies using inert silica that afford monodisperse iNPs that address this concern. These iNPs are highly stable thermally and the inert silica-based mesoporous encapsulation doesn't present mass transfer obstacles ...