Contamination of water sources is one of the most pressing global concerns, as it continues to escalate annually. This issue has attracted significant attention due to its serious implications for both ecosystems and human beings. Nitrate is among the water pollutants that necessitate removal from water sources to reduce pollution and prevent harm to living organisms. Naturally occurring in drinking water, this ion easily permeates the soil and subsequently infiltrates groundwater due to its high solubility. The presence of nitrate in water poses a substantial threat to the health of living organisms, leading to illnesses such as infant methemoglobinemia, stomach cancer, goiter, hypertension, congenital disabilities, and more. Photocatalytic processes, owing to their complete oxidation, economic efficiency, and environmental compatibility, exhibit a high potential for nitrate removal.