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Chemical warfare agent simulant DMMP reactive adsorption on TiO/graphene oxide composites prepared via titanium peroxo-complex or urea precipitation.

08:00 EDT 26th July 2018 | BioPortfolio

Summary of "Chemical warfare agent simulant DMMP reactive adsorption on TiO/graphene oxide composites prepared via titanium peroxo-complex or urea precipitation."

Two water-based methods were used to produce TiO/graphene oxide (GO) nanocomposites with 1 and 2 wt.% GO. Both procedures exclude the use of organometallic precursors, as well as the high-pressure and high-temperature treatments, which facilitate pure and energy efficient synthesis amenable for larger scale synthesis. Nanocomposites with narrow (<10 nm) and long spindle-like (<100 nm) TiO nanoparticles supported on GO flakes were obtained (TiO/GO), and their properties for reactive destruction of the organophosphorus simile chemical warfare agent (CWA) dimethyl methylphosphonate (DMMP) were investigated by in situ DRIFTS spectroscopy. Both synthesis procedures yielded highly reactive nanocomposites with markedly different properties compared to similarly prepared pure TiO nanoparticles. GO also induced morphology and texture changes, which were observed to have a significant impact on the adsorption and reactivity of the nanocomposites, and which were strongly related to synthesis procedure. In particular, the reduction state of GO, as measured by Raman spectroscopy, was observed to play a major role for the reactivity of the TiO/GO nanocomposites.

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Journal Details

This article was published in the following journal.

Name: Journal of hazardous materials
ISSN: 1873-3336
Pages: 482-490

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Medical and Biotech [MESH] Definitions

Tactical warfare using incendiary mixtures, smokes, or irritant, burning, or asphyxiating gases.

An organophosphorus compound that inhibits cholinesterase. It causes seizures and has been used as a chemical warfare agent.

An organophosphorus ester compound that produces potent and irreversible inhibition of cholinesterase. It is toxic to the nervous system and is a chemical warfare agent.

A highly toxic gas that has been used as a chemical warfare agent. It is an insidious poison as it is not irritating immediately, even when fatal concentrations are inhaled. (From The Merck Index, 11th ed, p7304)

Chemicals that are used to cause the disturbance, disease, or death of humans during war.

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