Study of the photocatalytic activity of Mn-doped ZnO nanocomposites depending on their morphology and structure with the variation of manganese concentration

Manganese doped zinc oxide (MZ) nanocomposites was uniquely synthesized using co-precipitation method. The photocatalytic activity of the synthesized MZ nanocomposites was studied under ultraviolet light irradiation by the photodegradation of malachite green (MG), a toxic organic dye. MZ3 (1:25) nanocomposite This show the best photocatalytic activity among the different molar ratios of Mn/Zn by studying their spectroscopic behavior. The Langmuir-Hinshelwood model was utilized to calculate the reaction rate of such degradation which showed the highest degradation activity for MZ3 having reaction rate as 0.0145 min(-1). This may be because of its high surface area (9.8 m(2)/g) obtained using Brunauer-Emmett-Teller (BET) method.

Automated summary

Manganese doped zinc oxide (MZ) nanocomposites with excellent photocatalytic activity were synthesized using co-precipitation method, and effectively degraded toxic organic dye under light irradiation. Among different molar ratios of Mn/Zn, MZ3 (1:25) nanocomposites exhibited the best photocatalytic activity, attributed to its high surface area and reaction rate.