MXenes are the two-dimensional transition metal carbides and/or nitrides which have a unique layered structure and a variety of surface functional groups. These 2D nanoparticles are unique in their robust mechanical properties and excellent photocatalysis properties. It is reported that MXenes have a considerably good light absorption over a wide wavelength range and a longer charge- carrier recombination time. This makes them a wonderful light harvesting material with potential device application. In this review, I discuss in detail this upcoming material along with its synthesis, the unique properties it possesses, the composite it forms, and their application in photo-catalytic reactions.