Green-Synthesized Sm³⁺-Doped ZnO Nanoparticles for Multifunctional Applications

Table 2

The rate constant and kinetic studies of 20 ppm fast orange red dye in 60 mg Sm³⁺-doped ZnO under UV light.

5 mol% Sm^3+: ZnO
t	c	c/c0	log c/c0	−log c/c0	%D
0	20	1	0	0	0
15	5.22293	0.261146	−0.58312	0.5831	73.8853
30	5.095541	0.254777	−0.59384	0.5938	74.5222
45	4.246285	0.212314	−0.67302	0.6730	78.7685
60	2.972399	0.14862	−0.82792	0.8279	85.1380
75	2.845011	0.142251	−0.84695	0.8469	85.7749
90	2.675159	0.133758	−0.87368	0.8736	86.6242
105	2.420382	0.121019	−0.91715	0.9171	87.8980
120	2.208068	0.110403	−0.95702	0.9570	88.9596
Slope = 0.007701			Rate = 0.017735 min^−1