 The study synthesizes ultra-filtration nanocomposite membranes by incorporating tungsten oxide, WO2.89 nanoparticles in a polyether sulfone, PS, matrix through the phase inversion method, and evaluates their antifouling performance against tin-zaparine sodium. The results show that increasing the loading of WO2.89 nanoparticles enhances the membrane's hydrophilicity and performance, with an optimum value of 54.9 kg per square meter h at 0.4 weight percent WO2.89 nanoparticles compared to the neat membrane's 30.42 kg per square meter h. The rejection efficiency and flux recovery ratio, FRR, against tin-zaparine sodium are also improved by 44.89 percent and 12.69 percent, respectively, for the membranes modified with 0.4 WT percent WO2.89 nanoparticles loading compared to the neat PS membrane. Furthermore, exposing the nanocomposite membranes to UV light irradiation enhances their antifouling property by 8.34 percent in FRR as compared to the membranes with the same percentage of nanoparticles loading without irradiation, due to the photocatalytic activity of WO2.89 nanoparticles in the decomposition of organic molecules on slash close to the membrane's surface. This article was authored by Riam R. Abdullah, Kadim M. Shabib, Azil B. Alzabadi, and others. We are article.tv, links in the description below.