@article{Sun2017, 
author = {Mengmeng Sun and Qiang Fu and Lijun Gao and Yanping Zheng and Yangyang Li and Mingshu Chen and Xinhe Bao},
title = {Catalysis under shell: Improved CO oxidation reaction confined in Pt@h-BN core–shell nanoreactors},
year = {2017},
journal = {Nano Research},
volume = {10},
number = {4},
pages = {1403-1412},
keywords = {core–shell, CO oxidation, Pt, hexagonal boron nitride, nanoreactor},
url = {https://www.sciopen.com/article/10.1007/s12274-017-1512-8},
doi = {10.1007/s12274-017-1512-8},
abstract = {Core–shell nanostructures consisting of active metal cores and protective shells often exhibit enhanced catalytic performance, in which reactants can access a small part of the core surfaces through the pores in the shells. In this study, we show that Pt nanoparticles (NPs) can be embedded into few-layer hexagonal boron nitride (h-BN) overlayers, forming Pt@h-BN core–shell nanocatalysts. The h-BN shells not only protect the Pt NPs under harsh conditions but also allow gaseous molecules such as CO and O2 to access a large part of the Pt surfaces through a facile intercalation process. As a result, the Pt@h-BN nanostructures act as nanoreactors, and CO oxidation reactions with improved activity, selectivity, and stability occur at the core–shell interfaces. The confinement effect exerted by the h-BN shells promotes the Pt-catalyzed reactions. Our work suggests that two-dimensional shells can function as robust but flexible covers on nanocatalyst surfaces and tune the surface reactivity.}
}