Experimental Analysis of Characterization of Aerosol Sediments Formed by Plasma-Induced CS_2 Destruction Processes

摘要

Removal of odorous carbon disulfide (CS_2) can be carried out via destructing into solid aerosols and gaseous products by using a radiofrequency (rf) discharge approach. A large amount of depositions at the glow discharge zone as well as traces of plasma-polymerized films at the afterglow discharge zone was formed. The structures of the aerosol sediments were identified in this study. The composition analysis showed that at inlet O_2/CS2 ratio (R) = 0.6, elemental sulfur with an S_8 structure was the dominant component, while a carbon-rich compound with consisting mainly of carbon polymers C_n, sulfur polymers S_n, and the -CSC- moiety was found at R = 0. XPS analysis indicated that CS_(2.84) film and CS1.77 film were produced at R = 0.6 and 0, respectively, and were mainly composed of a three-dimensional irregular network with a repeating unit, rather different from the structure of the deposition substances. Structure identification of solid sediments provided helpful insight for inferring the mechanisms of the CS_2 plasma-induced decomposition and polymerization processes in a low-pressure environment.