Figure 5From: Europium-doped amorphous calcium phosphate porous nanospheres: preparation and application as luminescent drug carriers Characterization of the as-prepared Eu 3+ :ACP (5 mol% Eu 3+ ) porous nanospheres: (a, b) TEM micrographs; (c) N2 adsorption-desorption isotherm; and (d) BJH pore size distribution curve.Back to article page