Fig. 4: Characterization of mesoscale and atomic lattices as well as porosity of 3D printed structures.
From: Hierarchically ordered porous transition metal compounds from one-pot type 3D printing approaches
a Small-angle X-ray scattering (SAXS) and b wide-angle X-ray scattering (WAXS) profiles for 3D printed Pluronic F127-niobia sol hybrid and resulting oxide and nitride-type structures. Ticks in (a) denote relative scattering vector (q) positions (1:\(\sqrt{3}\):2) of Bragg reflections for hexagonal structures (symmetry group P6mm). Grey and black ticks in (b) represent relative intensities and q positions of peaks of rocksalt δ-NbN (PDF #01-089-5007) and NbC (PDF #03-065-8781), respectively. c Nitrogen adsorption (solid line) and desorption (dashed line) curves of mesoporous oxide and nitride. d Corresponding pore size distributions derived from the Barrett–Joyner–Halenda (BJH) model. V0 is the volume of adsorbed nitrogen gas at standard temperature and pressure p°. p/p°, gas pressure p divided by p°, is the relative pressure. V is the pore volume and W is the pore width. Color codes in (b–d) are the same as in (a).
