Electrical Properties of Plasma Formation in Organic Solution and the Structure of the Resulting Carbon Material

Solution plasma process (SPP) enables several unique reactions at the interfaces, and it is worth noting that a widespread application in carbon nanomaterials with different various allotropes was achieved. Detailed plasma parameters of different interfaces such as plasma potential profile, electron density, electron temperature and heavy active particle distribution are important parameters in the plasma processes. In this study, a modified Langmuir probe method was proposed to measure physical parameters at different locations in the solution plasma under pin-to-pin electrode structure system. The electron temperature mappings of spatial distribution including plasma, plasma-gas, gas-liquid phase of SPP obtained from benzene, toluene, phenol and aniline, respectively, were diagnosed. The proposed plasma-metal junction, plasma-solution junction and the electric double-layer concept clarified the distribution structure and energy characteristics of the active particles in the solution plasma. The important effect of the electron temperature gradient from plasma-phase to interface of a specific quenching-like process on carbon growth, i.e., a larger quenching temperature induced will synthesize multilayer large-size carbon products.