A Ternary Magnetic Recyclable ZnO/Fe3O4/g-C3N4 Composite Photocatalyst for Efficient Photodegradation of Monoazo Dye

Table 1 Selected properties of azo dyes

Azo dyes	Formula	Molecular weight (g/mol)	Number of Sulfonic acid
AYR	C₁₃H₈N₃NaO₅	309.21	0
MO	C₁₄H₁₄N₃SO₃Na	327.33	1
OG	C₁₆H₁₀N₂Na₂O₇S₂	452.37	2