 This paper reviews the use of metal oxide-based nanomaterials for the photocatalytic degradation of Malachite Green, MG, dye from wastewater. It considers factors such as the catalyst's composition, the amount of dye present, the amount of catalyst required, the initial pH of the dye solution, the type of light source used, the publication date, and the length of time the dye needs to be exposed to light before it is fully degraded. The results suggest that the Scopus database can be used to analyze global trends in research related to MG dye degradation over a period of 12 years. This article was authored by Etisham Umar, Muhammad Akram, Junai Hader, and others.