The article discusses the advancements in utilizing TiO2 nanoparticles for improving the hydrogen evolution reaction (HER) to address challenges in sustainable energy storage. Despite the intermittent nature of renewable energy sources like solar and wind, the conversion of energy into green hydrogen derived from water during peak periods can mitigate issues of energy sustainability and environmental pollution. Platinum-group metals, although efficient, pose cost barriers; hence, researchers are focusing on developing cost-effective electrocatalysts. TiO2 nanoparticles have gained attention for their stability, performance, and cost-effectiveness, with studies exploring methods to enhance their electrochemical properties through morphology alterations, element doping, and carbon-based material integration. Various nanocomposites, including MoS2/NiO and Co3O4/MoS2, have demonstrated excellent potential for efficient hydrogen production. The article also details the synthesis of TiO2 nanoparticles through the co-precipitation technique, followed by characterization using multiple analytical methods, before their application in the HER within an alkaline electrolyte medium.