Abstract
Removal of odorous carbon disulfide (CS2) 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 O2/CS2 ratio (R) = 0.6, elemental sulfur with an S8 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 CS2.84 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 CS2 plasma-induced decomposition and polymerization processes in a low-pressure environment.
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