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Open Access Adsorption and decomposition of 2-chloroethylethylsulfide (CEES) on expanded graphite/metal oxides composites

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Composites based on expanded graphite (EG) and metal oxides (MOs) were prepared by an explosive combustion and blending method. A metal oxide (Ag2O, CuO or ZnO)-containing phase was employed as a component with reactive functionality, which was supported on EG as a component with adsorptive functionality. The reaction products of the adsorptive degradation of 2-chloroethylethylsulfide (CEES), a simulant of the well-known chemical warfare agent sulfur mustard (HD), were characterized by solid-state and solution NMR techniques. The elimination and hydrolysis reactions in the decontamination of CEES were shown to occur catalytically over the EG/Ag2O composite. The molecular adsorption products of OCu· · ·SC4H9Cl surface complexes and OZnO–CH2CH2SC2H5 surface-bound alkoxy species contributed to the decontamination of CEES on the surface of the EG/CuO and EG/ZnO composites, respectively. All reaction products exhibited a lower toxicity than CEES, meaning that the EG/MO composites exhibited self-detoxifying properties.

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Keywords: 2-CHLOROETHYLETHYLSULFIDE; DECONTAMINATION; EXPANDED GRAPHITE; METAL OXIDES

Document Type: Research Article

Publication date: June 1, 2018

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  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
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