The high surface area-to-volume ratio of chitosan-fruit-peel nanocomposite and other distinctive physical, chemical, and biological properties that arise due to its size effects have attracted significant attention in the field of environmental remediation. Wet chemical techniques are commonly used to create metallic nanoparticles; however, the chemicals used are typically dangerous and combustible. Because it doesn't involve the use of hazardous chemicals, the synthesis of nanoparticles using a range of fruit resources is regarded as green technology. Utilizing the powdered peels of Garcina mangostana (mangosteen), the chitosan-fruit peel nanocomposite was created. By employing Fourier spectroscopy (FTIR), X-ray diffractometer (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Thermogravimetric Analysis (TG/DTA), researchers were able to characterize the synthesized chitosan-fruit peel nanocomposite. Chitosan-fruit peel nanocomposite is used to investigate the photocatalytic degradation of model dye and industrial effluent. The sequestration of dye from aqueous solutions using chitosan-fruit peel nanocomposite is the main emphasis of this work. The Chitosan-Fruit Peel Nanocomposite could therefore be a viable adsorbent material in environmental rehabilitation and remediation.