▎ 摘　　要

A novel nanocomposite was synthesized by covalent functionalization of graphene oxide (GO) with 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrinatoiron (III) chloride (Fe-THPP) via an ester linkage. The synthesized nanocomposite was characterized by various techniques such as XPS, Raman spectroscopy, BET, IR, UV-Visible, TGA, SEM, and EDX. The synthesized nanocomposite exhibited appreciable interaction with crystal violet (CV) dye with a detection limit of 2.6x10(-6) mu g/mL and binding constant of 35.93x10(3) ppm(-1) which ensured the high concentration of CV dye on the surface of synthesized photocatalyst. The nanocomposite was effectively utilized in the photo-degradation of CV dye under visible light irradiation. The photo-degradation efficiency was remarkably high (93.45 %) with a low catalytic dosage of 0.4 mg/L within 80 minutes. The nanocomposite exhibited good stability and reusability and thereby can be used in the photocatalytic degradation processes to treat wastewater.