Dear Experts, I am studying about a Stanford University innovation, using Molybdenum Disulphide and solar radiation to disinfect water at a very quick rate. I am unable to find details about photo sensitive properties of Molybdenum Disulphide. What is the work function of molybdenum disulphide, how does it change with its thickness. I would be glad if I could find any resource which could guide me through the reactions and how the purification is done. I have attached an image of the water purifying device here. Thank you.