Noncovalent functionalization of few-layer black phosphorus with metal nanoparticles and its application in catalysis

Iolanda DI BERNARDO, Sapienza Università di Roma

The many astonishing, well-known properties of graphene made it a rising star in the field of nano-materials over the last decade [1], and keep arising much interest around it and its possible application in technological fields such as optics, plasmonic, sensors and biodevices. For some of these applications though, e.g. for batteries, it is more convenient to increase the available graphene surface in a given volume, so several ways have been proposed to stack or pack the carbon layers while trying and preserve the features of an ideal graphene sheet. Nanoporous   graphene (NPG), exhibiting the electronic properties of graphene, highly interconnected structures and low defects density, can be grown from Nickel mashes via CVD, allowing to stack thousands of well separated graphene planes (arranged in tubular/porous structures) in flakes of just millimetric size [2,3].

In the present work we report on the thorough characterization of NPG in the nanometer scale, thanks to spatially resolved Raman and photoelectron spectroscopy: we verify the preservation of graphene electronic properties and the degree of hybridization as a function of the topology, pore size, interconnectivity and curvature.

 
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