Molecularly thin two-dimensional (2D) semiconductors are formed as photocatalysts due to the quantum effects that depend on the number of their layers and the high efficiency of distribution. However, the correlation between the dimensionality, crystallinity, and photocentric action of these 2D nanomaterials is still unclear. Here's a look at Ag Photoshoot Techniques, a microscopic analysis used to solve space on the MoS's phototrix action.2 As a model catalyst. Interestingly, we find that only monolithic (1L) -MoS2 Active for Ag's photographic response. Photocatalytic action of 1L-MoS2 The built-in electric field from the Ministry of Internal Affairs has been strengthened2/ SiO2 Interface, instead of a specific surface structure and 1L-MoS quantum electronic state2. In addition, we will observe that the photocatalytic active sites that are geometrically distributed on the triangular 1L-MoS2 The crystals in which the Ag particles are preferentially deposited on the edges of the extreme zigzags of the triangular grains and on the defective inner parts. The degradation of photocatalytic action and the mobility of the electron in conjunction with the formation of the Mo (VI) species indicate that the species inhibit the intravenous diffusion of photogenic electrons into the reduction sites. In this work, monolithic selectivity, activation and inactivation mechanisms have been identified, offering future directions in the development of 2D nanophotocatals.