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.

Polymer-templated synthesis of hollow Pd–CeO2nanocomposite spheres and their catalytic activity and thermal stability

“…To solve these problems, isolating noble metal NPs in small cavities is a reasonable solution, because it can efficiently prevent particles migration and its deactivation. Besides, this isolating method can also reduce the leaching of the active components from the catalyst particles in the chemical processes, which is another important aspect in a design of new nano-catalysts [10,11] .…”

Optical Anisotropicity of Core‐Shell or Yolk‐Shell‐typed Ag@Fe3O4 Nanochains

“…4,5 In the initial attempt, the nanoscale structure can be easily controlled by external electric and magnetic field. [7][8][9][10] Recently, the non-contact incorporation of gold nanorod into porous magnetic nanoshell is achieved via yolk-shell structure to conduct photothermal induced photoacoustic imaging and hyperthermia capabilities with excellent permeability for magnetically targeted drug delivery. 6 More interestingly, using remarkably higher surface area of YOSH-NP, many reports were published about its high catalytic and sensing activity.…”

Novel synthesis of Fe2O3–Pt ellipsoids coated by double‐shelled La2O3 as a catalyst for the reduction of 4‐nitrophenol

“…To address these issues, researchers have been searching for strategies to stabilize Pt NPs of tiny particle sizes; for example, embedding Pt NPs onto support surfaces or surrounding them with porous oxide materials . Immobilization of these active components onto solid supports not only can protect them from aggregation to some extent but also can enhance both catalytic activity and selectivity in certain cases …”