Zinc Indium Sulfide as a Sustainable Catalyst for Green Hydrogen Production

Research on green hydrogen as a viable replacement for fossil fuels has accelerated due to the pressing demand for clean, sustainable energy sources on a worldwide scale. Green hydrogen, generated through water splitting driven by renewable energy sources, holds immense promise for mitigating carbon emissions across diverse economic sectors. Zinc indium sulfide (ZnIn2S4) shines in this situation as a potential catalyst that can improve the sustainability and efficiency of hydrogen production. This chapter explores the multifaceted role of ZnIn2S4 in the realm of green hydrogen production. It explores the special characteristics of ZnIn2S4 that make it a promising option for photocatalytic hydrogen evolution, providing insights into its light absorption, band structure, and capacity for charge separation. The chapter further emphasizes different alterations like element doping, vacancy engineering, surface modification, heterojunction engineering, and co-catalyst loading employed to optimize ZnIn2S4 for enhanced catalytic activity. The chapter concludes by discussing the existing challenges and potential future directions for advancing the development of ZnIn2S4 semiconductor photocatalysts.