Table 1. Comparison between Ag@Biochar and Other Catalysts According to Their Photodegradation Capacity of MB.

catalyst	photodegradation capacity (%)	dye concentration (mg/L)	time (min)	refs
AgNPs	82.8	60	180	(69)
AgNPs	92.1	25	14	(70)
Ag/ZnO	81.2	25	240	(71)
Ag/ZnO nanocomposite	94.3	10	120	(72)
Ag@biochar	88.4	25	75	this study
Ag@biochar	84.0	50	210	this study