Optimization of metal dopant effect on ZnO nanoparticles for enhanced visible LED photocatalytic degradation of citalopram: comparative study and application to pharmaceutical cleaning validation

Table 6 Summary of recently reported methods of doped ZnO NPs photocatalysis

Doped ZnO NPs	Studied model	Degradation efficiency	Comment	Ref
Sn/ZnO NPs Cu/ZnO NPs	Citalopram	- 78% in 120 min - 68% in 120 min	- Facile synthesis - Economic household LED lamp was used - High molecular weight organic compund	Current work
Sn doped ZnO NPs	Methylene blue	94% in 180 min	- Low molecular weight compound - Long treatment time	[18]
Cu doped ZnO NPs	Methylene green	75% in 240 min	- Simple dye - Long treatment time	[33]
Ag doped ZnO thin films	Methylene blue	45% in 140 min	- High cost of Ag used - Lengthy synthesis procedure	[34]
La doped ZnO	Methyl orange	85% in 150 min	- High cost of rare earth metal - Lengthy synthesis procedure	[35]
Ba doped ZnO NPs	Rhodamine B	98% in 68 min	- High watt visible light source (500 W) - Simple dye	[36]
Cu doped ZnO	Monocrotophos pesticide	80% in 180 min	- Lenghty synthesis procedure - Long treatment time	[37]
N-doped ZnO/graphene oxide	Brilliant smart green dye	Full degradation in 90 min	- High watt visible light source (300 W Xe lamp) - Lenghty synthesis procedure	[38]

ISSN: 2468-2039