Sample Peak pos. [°2θ] Crystallite size [nm] d-spacing [nm]
(NiFe2O4@SiO2@HKUST-1) 10% 19.909 20.5 4.45
(NiFe2O4@SiO2@HKUST-1) 30% 20.627 32.8 4.30
(NiFe2O4@SiO2@HKUST-1) 50% 20.467 41.0 4.33