“…Double-crucible technique has been proved to be an efficient, convenient and simple way to fabricate nanofibers, nanobelts and hollow nanofibers 24 . Meanwhile, electrospinning is a promising, straightforward and convenient way to prepare one-dimensional (1D) nanomaterials [25][26][27] with diameters ranging from tens of nanometers up to micrometers owing to its easy control and low cost, including nanowires 28 , nanobelts [29][30][31] , core-shell structured nanofibers [32][33][34] core-shell structured nanotubes 40,41 , etc. Nevertheless, the fabrication of SnS or SnSe nanofibers via electrospinning combined with a double-crucible technique is not reported.…”