Progress in the Structure of Carbon Nanostructures Based on Concentrated Salt Systems

In recent years, several studies have been published on the synthesis of carbon nanomaterials—such as carbon nanospheres, carbon nanoframes, carbon nanorods, carbon nanoblocks, and carbon octadecahedrons—in concentrated salt systems. These novel carbon nanomaterials reported in the literature have attracted widespread interest. The fabrication approach described in these studies leverages the interaction between surfactants and concentrated salts to produce carbon nanomaterials. Unlike traditional synthetic routes, the assembly route of carbon nanomaterials in concentrated salt systems is characterized by the controllable construction of diverse carbon nanostructures. As an extension of conventional carbon nanomaterial manufacturing methods, this strategy holds significant development potential in the field of carbon nanomaterial production. Based on existing literature reports on concentrated salt systems, this review summarizes the theory and practice of carbon nanomaterial formation in such systems, along with the formation’s underlying mechanisms, advantages, and future development trends.