Hollow-shelled nanoreactors endowed with high catalytic activity

Abstract

Hollow-shelled nanoreactors have emerged as efficient structures to maximize the potential of nanoparticles in the field of catalysis. In this Concept article, we underline the importance of both the morphology of the active nanoparticles as well as the composition and porosity of the shell for the catalytic performance of the overall nanocomposite. Different configurations are discussed, with a focus on preparative methods and applications in organic synthesis. Perspectives on future designs that may offer new opportunities to improve the selectivity of the catalyzed transformations and add additional features are also addressed, in order to illustrate the potential of these unique nanostructures. Sleepy hollows wake up: The design of different hollow-shelled nanoreactors is reviewed, analyzing the effects of both the shells and the active metal nanoparticles on the overall catalytic efficiency. Attention is focused on the methods used to prepare these hybrid nanocomposites and their different applications. Future perspectives on innovative architectures and further uses in catalysis are also addressed. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.