Modified clay minerals efficiency against chemical and biological warfare agents for civil human protection

Plachá, Daniela; Rosenbergová, Kateřina; Slabotínský, Jiří; Kutláková, Kateřina Mamulová; Študentová, Soňa; Martynková, Gražyna Simha

doi:10.1016/j.jhazmat.2014.01.059

Cited by 29 publications

(10 citation statements)

References 19 publications

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“…Beside porous materials, layered solids such as clays can be considered as good candidates for the abatement of chemical warfare agents 7. Advantages such as high robustness, good chemical versatility and very low production costs render these solids promising catalysts for the oxidative degradation of CWAs, although they have been poorly explored for these purposes.…”

Section: Methodsmentioning

confidence: 99%

Niobium(V) Saponite Clay for the Catalytic Oxidative Abatement of Chemical Warfare Agents

et al. 2014

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A NbV‐containing saponite clay was designed to selectively transform toxic organosulfur chemical warfare agents (CWAs) under extremely mild conditions into nontoxic products with reduced environmental impact. Thanks to the insertion of NbV sites within the saponite framework, a bifunctional catalyst with strong oxidizing and acid properties was obtained. Remarkable activity and high selectivity were observed for the oxidative abatement of (2‐chloroethyl)ethyl sulfide (CEES), a simulant of sulfur mustard, at room temperature with aqueous hydrogen peroxide. This performance was significantly better compared to a conventional commercial decontamination powder.

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Section: Methodsmentioning

confidence: 99%

Niobium(V) Saponite Clay for the Catalytic Oxidative Abatement of Chemical Warfare Agents

et al. 2014

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“…Due to high charge density, Vrm may adopt more cationic surfactant than Mt within its interlayer space (Mittal, 2012b). Thus, organo-vermiculite (HEVrm) with high organic carbon content and large basal spacing can be obtained via exchange between the interlayer cations and cationic surfactants (e.g., quaternary ammonium), which has potential application as effective adsorbent towards organic contaminants, and as filler for polymerclay nanocomposites (Valaskova et al, 2009;Dultz et al, 2012;Placha et al, 2014). Thermal stability of OC is a critical factor for preparation and application of clay-based polymer nanocomposites, as they are prepared by mixing polymers and OC at high temperature and sheared in a compounder (Mittal, 2012a).…”

Section: +mentioning

confidence: 99%

Structure and thermal stability of organo-vermiculite

Wei

2016

Applied Clay Science

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“…Most of them showed, as a matter of example, very good conversion and selectivity in the oxidation reaction of organic sulfides into sulfoxides, whose reactivity mimics the oxidative abatement and detoxification of blistering warfare agents. More recently, layered solids and especially clays (Carniato, Bisio, Psaro, Marchese, & Guidotti, 2014;Michalkova et al, 2006;Plachá et al, 2014) or nanostructured inorganic metal oxides, such as aluminum oxide (Al 2 O 3 ), zinc oxide (ZnO), magnesium oxide (MgO) and titanium oxide (TiO 2 ), were widely studied and used with good results in CWA oxidation and/or degradation reactions (Beer Singh et al, 2010;Bisio et al, 2016;Neatu et al, 2010;Zafrani et al, 2011). The catalytic performance of inorganic oxides in the decontamination of hazardous chemicals is, to a large extent, related to their form, size and shape.…”

Section: Introductionmentioning

confidence: 99%

Tungsten oxide: a catalyst worth studying for the abatement and decontamination of chemical warfare agents

Costenaro

Bisio

Carniato

et al. 2017

Global Security: Health, Science and Policy

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Tungsten(VI) oxide, WO 3 , was studied and used as a heterogeneous catalyst for the liquid-phase oxidative abatement and solid-phase decontamination of simulants of chemical warfare agents, CWAs. The catalytic performance of WO 3 was compared to the one of a soluble W-containing model catalyst, W(IV)-heptaisobutyl polyhedral oligomeric silsesquioxane, W-POSS. In liquid-phase abatement tests, WO 3 promoted a complete degradation of the toxic agent simulant within 24 h, in the presence of aqueous hydrogen peroxide, at room temperature. In solid-phase decontamination tests, when WO 3 was mixed with sodium perborate as a solid oxidant, it was also tested in the decontamination of a cotton textile support from organosulfide and organophosphonate agents (simulants of blistering and nerve CWAs, respectively), showing promising performances comparable to, or sometimes better than, a nanostructured TiO 2 catalyst, taken as a reference material. The environmental impact of the WO 3 catalyst was assessed on bioluminescent Photobacterium leiognathi Sh1 bacteria, over which no acute nor chronic detrimental effects were recorded. Then, when in contact with a vegetable species such as Phaseolus vulgaris L. (common bean), WO 3 did not cause damage to the photosynthetic apparatus of the plant, whereas a clear inhibition of the seed germination was evidenced.

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Modified clay minerals efficiency against chemical and biological warfare agents for civil human protection

Cited by 29 publications

References 19 publications

Niobium(V) Saponite Clay for the Catalytic Oxidative Abatement of Chemical Warfare Agents

Niobium(V) Saponite Clay for the Catalytic Oxidative Abatement of Chemical Warfare Agents

Structure and thermal stability of organo-vermiculite

Tungsten oxide: a catalyst worth studying for the abatement and decontamination of chemical warfare agents

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