Effect of Calcination Temperature on Structural Properties and Photocatalytic Activity of Ceria Nanoparticles Synthesized Employing Chitosan as Template

Table 5

Apparent constant and half-life for the Langmuir-Hinshelwood model and specific photoactivity for Congo Red photodegradation by CeO₂ nanoparticles calcined at different temperatures.

Temperature (°C)	𝑘app (h^−1)	𝑡1/2 (h)	Specific photoactivity; 𝑘app/𝑆BET (𝑘 in g m^−2 h^−1)
350	0.0356	19.47	0.34 × 10^−3
650	0.0390	17.77	2.99 × 10^−3
960	0.0495	14.00	6.17 × 10^−3
Commercial	0.0141	49.16	—