AlN hollow-nanofilaments by electrospinning

Abstract

We present for the first time an original method to elaborate AlN nanofilaments (NFs) by using a preceramic-based electrospinning process. Initially, an Al-containing precursor (poly(ethylimino)alane) is mixed with an organic spinnable polymer to be electrospun and generate polymeric filaments with a homogeneous diameter. A ceramization step at 1000 °C under ammonia and a crystallization step at 1400 °C under nitrogen are performed to get the final product made of AlN NFs with a diameter ranging from 150 to 200 nm. Studies carried out by high resolution electron microscopy and 3D tomography show their regular morphology, with high chemical purity and polycrystalline nature.

Monodisperse platinum nanoparticles supported on highly ordered mesoporous silicon nitride nanoblocks: superior catalytic activity for hydrogen generation from sodium borohydride

“…Within this context, further investigations are under progress to prepare monolithic Si 3 N 4 with different types of porosity as well as other forms of PDCs. In particular, porous felts obtained by Paper electrospinning preceramic polymers [55][56][57] are promising. These materials, the related metal supported monoliths, their catalytic performance and their reusability in operating conditions will be published separately.…”