TiO₂/Diazonium/Graphene Oxide Composites: Synthesis and Visible-Light-Driven Photocatalytic Degradation of Methylene Blue

Table 5

Comparison of rate constant of the present catalyst with published literature.

Catalyst	BET-specific surface area (m^2·g^-1)	Light source (nm, powder)	(mg·L^-1)/volume (mL)/ (mg)	(min^-1)	References
ZnO	8.21	UV, 20 W	10/100/50	0.022	[52]
ZnO/graphene oxide	31.58	UV, 20 W	10/100/50	0.098	[52]
Pristine TiO2 (P25)	—	254, 11 W	10/100/50	0.009	[53]
Graphene-like carbon/TiO2	—	254, 11 W	10/100/50	0.248	[53]
Pristine TiO2 (P25)	51	≤370, 18 W	9.60/100/50	0.050	[54]
Sm-TiO2	46	370, 18 W	9.60/100/50	0.030	[54]
Ce-TiO2	46	370, 18 W	9.60/100/50	0.025	[55]
TiO2	50	340, 125 W	23/2750/375	0.025	[56]
CdS	111.2	>420, 500w	25/200/80	0.008	[56]
g-C3N4	9.8	>420, 500w	25/200/80	0.004	[56]
g-C3N4-CdS	166.5	>420, 500w	25/200/80	0.012	[56]
Ag/ZnO	—	>570, (high pressure sodium lamp)	5/-/150	0.005	[57]
Ta-ZnO	36	>420, 300	10/50/50	0.040	[58]
Eu-TiO2	—	(400-800 nm), 60 W, halogen lamp	3.19/100/100	0.008	[59]
TiO2/diazonium/GO	151.4	75 W - 220 V	20/100/100	0.160	The present work