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Asymmetric Multimetallic Mesoporous Nanospheres.

08:00 EDT 11th April 2019 | BioPortfolio

Summary of "Asymmetric Multimetallic Mesoporous Nanospheres."

Mesoporous colloidal nanospheres with tailorable asymmetric nanostructures and multimetallic elemental compositions are building blocks in next-generation heterogenous catalysts. Introducing structural asymmetry into metallic mesoporous frameworks has never been demonstrated, but it would be beneficial because the asymmetry enables the spatial control of catalytic interfaces, facilitates the electron/mass transfer and assists in the removal of poisonous intermediates. Herein, we describe a simple bottom-up strategy to generate uniform sub-100 nm multimetallic asymmetric bowl-shaped mesoporous nanospheres (BMSs). This method uses a surfactant-directed "dual"-template to control the kinetics of metal reduction on the surface of a vesicle, forming mesoporous metal islands on its surface whose spherical cone angle can be precisely controlled. The symmetric BMS mesostructures with different spherical cone angles (structural asymmetry) and elemental compositions were demonstrated. The high surface area and asymmetric nature of the metal surfaces were shown to enhance catalytic performance in the alcohol oxidation reactions. The findings illustrated here offer the novel and interesting opportunities for rational design and synthesis of hierarchically asymmetric nanostructures with desired functions for a wide range of applications.

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This article was published in the following journal.

Name: Nano letters
ISSN: 1530-6992
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