Synthesis and Characterization of CeO₂-SiO₂ Nanoparticles by Microwave-Assisted Irradiation Method for Photocatalytic Oxidation of Methylene Blue Dye

Table 4

Effect of CeO₂-SiO₂ nanoparticles on the photoactivity.

Sample	𝑆BET (m^2/g)	Band gap eV	MB removal efficiency, %	𝑉𝑝 (cm^3/g)	Crystallite size, nm
M-30 min	335	3.25	93	0.59	8
M-60 min	300	3.32	90	0.58	10
M-90 min	236	3.42	89	0.44	11
M-120 min	118	3.55	88	0.30	12
M-180 min	100	4.02	87	0.28	14
H-24 h	90	4.10	85	0.26	15