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

Wei Che Hung, Kuo Hui Wu*, Wen Chien Huang, Ken Fa Cheng, Je Chuang Wang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

3 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)279-287
Number of pages9
JournalMaterials Express
Volume8
Issue number3
DOIs
StatePublished - 06 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 by American Scientific Publishers. All rights reserved.

Keywords

  • 2-chloroethylethylsulfide
  • Decontamination
  • Expanded graphite
  • Metal oxides

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