Tables at a glance

Table 1

Table 2

Figures at a glance

Graphical Abstract Comments

Scheme 1

Scheme 2

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Table 1

Sample name	Eg (eV)	-1 K (min ) a
MB	--	4*10-8
Z	3.20	0.0014
MZ	2.07	0.0112
MZT	1.90	0.02317
MZR	1.89	0.0359

Table 1: The band gap energy (Eg) values and kinetic parameters for photocatalytic activities of Z, MZ, MZT, and MZR NCs

Table 2

Photocatalyst	Weight of catalyst (g/L)	Concentration of MB (ppm)	Time(h)	Degradation (%)	Ref.
ZnS-TiO2/RGO	0.4	20	2	90	[56]
WO3/GO	0.5	3	1.2	82	[57]
Pt/WO3/GO	0.5	3	1.2	94	[57]
Fe3O4 /CdWO4 +H2O2	0.1	20	2	32	[58]
Fe3O4 /CdWO4 /PrVO4 + H2O2	0.1	20	2	68	[58]
Fe3O4/ZnWO4/CeVO4 +H2O2	0.6	25	2	84	[59]
Pt/ZnO-MWCNT	0.4	100	1	74	[60]
MZG3	2	100	1.5	95	Our work

Table 2: Photocatalytic degradation of MB under Visible Light with Various Photocatalysts

FIGURE 1

Graphical Abstract

FIGURE 2

Scheme 1: Schematic Synthesis of Fe3O4 /ZnO/ rGO nanocomposites (MZR)

FIGURE 3

Scheme 2: Schematic Synthesis of Fe₃O₄ / ZnO /TiO₂ nanocomposites (MZT)

FIGURE 4

Figure 1: XRD spectra of Z, M, MZ, MZR and MZT nanocomposites

FIGURE 5

Figure 2: FT-IR spectra of Z, M, MZ, MZR, and MZT nanocomposites

FIGURE 6

Figure 3: TEM images of Z (a), M (b), MZ (c), MZR (d) and MZT(e)

FIGURE 7

Figure 4: UV-Vis diffuse reflectance spectra of Z, MZ, MZT and MZR NCs

FIGURE 8

Figure 5: Photoluminescence spectra of Z, MZ, MZT and MZR NCs

FIGURE 9

Figure 6: Photodegradation and (b) Kinetic of MB by Z, MZ, MZT and MZR nanocomposites for 100 ppm MB under visible light

FIGURE 10

Figure 7: The MZR photocatalytic activity for degradation of organic pollutant remained stable (about 95%) throughout five consecutive cycles

FIGURE 11

Figure 8: FT-IR spectra of MZR nanocomposites before and after of photocatalytic activity

FIGURE 12

Figure 9: Schematic diagram of MB photodegradation by MZR crystalline nanocomposite under visible light