 The study examined three forms of molybdenum disulfide, MOS2, 1T, 2H, and 1T-MOS2 for their ability to produce hydrogen from water under visible light irradiation. The 1T form of MOS2 was found to be more efficient than its counterparts, generating up to 75 millimoles of hydrogen per gram of material per hour with a turnover rate of 15-19 hours. This is attributed to the lower work function of 1T-MOS2 compared to other forms of MOS2, which makes it easier to transfer electrons from the material to generate hydrogen. This article was authored by Utham Gupta, B.S. Naidu, Ramamala Maitra, and others.