The article discusses the significance of hydrogen as a sustainable energy resource in combating air pollution and reducing carbon emissions. Hydrogen is highlighted for its high energy density and eco-friendly characteristics, making it a promising alternative to traditional fossil fuels. The process of producing hydrogen through photo-electrochemical and electrochemical water splitting is explored, emphasizing the high purity and efficiency of green hydrogen production. The commercialization challenges, such as reducing the cost of green hydrogen production and achieving specific efficiency benchmarks, are underlined as critical factors for the widespread adoption of hydrogen technology. The article also delves into the importance of catalysts in enhancing hydrogen production efficiency, with a focus on platinum and the exploration of earth-abundant materials for catalysis. Additionally, the potential of two-dimensional materials like graphene and transition metal dichalcogenides as catalysts for hydrogen evolution is discussed, highlighting their unique properties and conductivity. Research efforts are directed towards developing efficient catalysts to improve the scalability and effectiveness of hydrogen production through water splitting reactions, ultimately contributing to the advancement of sustainable energy solutions.