. 2021 Nov 12;11(11):3044. doi: 10.3390/nano11113044

Table 1.

Degradation studies of azo dyes using different nanomaterials and process conditions.

Organic Dyes [Concentration]	Catalyst	Conditions	Degradation And Time	Reference
RhB (10 mg/L)	Fe₃O₄ NPs (10–15 nm)	Cat = 0.5 g/L, H₂O₂ 40 mM pH = 5, T = 25 °C, UI = 20 kHz	90% 1 h	[13]
RhB (10 mg/L)	Ag₃PO₄–Fe₃O₄@AB (10 nm)	Cat = 0.1 g/L, H₂O₂ = 1.5 mM pH = 3.5, T = 25 °C, UI = 40–970 kHz	99.3% 1 h	[35]
AO 7 (35 mg/L)	GO–Fe₃O₄ NPs Fe₃O₄ NPs (10 nm)	Cat = 0.2 g/L, H₂O₂ = 22 mM pH = 3, T = 25 °C	98%, 3 h ~80%	[11]
MB (120−300 mg/L)	α-Fe₂O₃/SiO₂	Cat = 1 g/L, H₂O₂ = 2 M pH = 3, T = 25 °C	99% 60 h	[23]
MB (50 mg/L) RhB (25 mg/L))	α-Fe₂O₃@Ti-tmSiO₂	Cat = 0.25 g/L, H₂O₂ = 53 mM pH = 4, T = 50 °C	100%, 5.5 h 100%, 9h	[36]
AR 1 (200 mg/L)	Fe₃O₄ NPs (3.2 nm)	Cat = 4 g/L, H₂O₂ = 2 mM pH = 3.5, T = 25 °C	97.4% 1 h	This work