A colorless, odorless G nerve agent, a type of chemical transfer agent (CWA) that causes significant loss life, is being studied for quick and accurate detection. In this study, detection materials with different functional groups were synthesized based on thiourea (TU)-decorated polyhedral oligomeric silsesquioxane (POSS) to study the most suitable material dimethyl methylphosphonate (DMMP), s...

In this work, ZnCaO2 (zinc oxide-calcium oxide) nanocomposite were synthesized at different temperatures (500-700°C) by sol-gel method based on polymeric network of polyvinyl alcohol (PVA). The synthesized samples were characterized by SEM/EDAX, FT-IR and XRD techniques. It was found that synthesized nanocomposites have 1.62, 2.05 and 13.91%wt of CaO, respectively. The obtained results show tha...

in this work, the practicality of catalytic surfaces of nano-structured co3o4 and mnco2o4 for the adsorption and neutralization reactions of dimethyl methyl phosphonate (dmmp) as an toxic agricultural organo-phosphorous pesticide has been investigated. the co3o4 and mnco2o4 nps have been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors a...

The presence of chemical warfare agents (CWAs) in the environment is a serious threat to human safety, but there are many problems with currently available detection methods for CWAs. For example, gas chromatography–mass spectrometry cannot be used in-field owing rather large size equipment required, while commercial sensors have disadvantages low sensitivity and poor selectivity. Here, we deve...

In this work, ZnCaO2 (zinc oxide-calcium oxide) nanocomposite were synthesized at different temperatures (500-700°C) by sol-gel method based on polymeric network of polyvinyl alcohol (PVA). The synthesized samples were characterized by SEM/EDAX, FT-IR and XRD techniques. It was found that synthesized nanocomposites have 1.62, 2.05 and 13.91%wt of CaO, respectively. The obtained results show tha...

ab initio calculations at the density functional theory (dft) and the second-order møller−plessetperturbation theory levels with 6-31+g(d), 6-31g(d) basis sets for non-metal atoms and lanl2dzfor metal have been performed for the adsorption of dimethyl methylphosphonate (dmmp) on znoby gaussisn 98 program. the calculated rotational constants by b3lyp/6-31g(d) are in moreagreement with the experi...

Sulfonated polyelectrolyte membranes (PEMs), such as Nafion and styrene-olefin block copolymers, are explored as permselective membranes for fuel cells as well as suitable barrier materials against chemical agents. The permselective properties of PEM are determined by their microphase segregation into hydrophilic and hydrophobic domains. We performed classical molecular dynamics simulations of ...

A combined experimental and numerical investigation of partially premixed laminar methane-air flames undergoing side-wall quenching (SWQ) is performed. well-established SWQ burner adapted to allow the seeding main flow with additional gaseous products issued from a (secondary) wall inlet close flame’s point. First, characteristics flame that quenches at are assessed using planar laser-induced f...