With industrial development mainly paper, textile, medicine, rubber and plastic industry, as a contaminant, the number of organic dyes enhanced. The consistent discharge of toxic dyes into water bodies has escalated into a significant issue. Due to the carcinogenic and mutagenic properties of the majority of dyes, they pose a variety of health risks. Hence its required to find out solution of this problem and efficient methods to the remediation of sewage that contains toxic dyes. One of the effective solutions to this issue is the use of nanoparticles as a photocatalyst. Various physical, chemical, and biological methods can be employed to generate the nanoparticles. Among various environmental applications of nanoparticles, they can be used as for decontamination of dyes from polluted water bodies. The practical application of metal and metal oxide nanoparticles is on the rise alongside their nanocomposites as one of the powerful solutions of photocatalytic degradation of various hazardous dyes. In this paper, we fabricate ZnO nanoparticles through a green route, in which Aloe vera leaf (Aloe Barbadensis) extract is employed as a reducing and capping agent. The synthesized nanoparticles were subsequently characterized using a variety of analytical techniques, including XRD and UV-Visible. The band gap is 2.63 eV.