Zirconium doped nano-dispersed oxides of Fe, Al and Zn for destruction of warfare agents

Journal Article · Sun Nov 14 23:00:00 EST 2010 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2010.06.021· OSTI ID:22066233

Stengl, Vaclav ^[1]; Houskova, Vendula; Bakardjieva, Snejana; Murafa, Nataliya; Marikova, Monika ^[1]; Oplustil, Frantisek; Nemec, Tomas ^[2]

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1. Institute of Inorganic Chemistry AS CR v.v.i., 250 68 Rez (Czech Republic)
2. Military Technical Institute of Protection Brno, Veslarska 230, 628 00 Brno (Czech Republic)

Zirconium doped nano dispersive oxides of Fe, Al and Zn were prepared by a homogeneous hydrolysis of the respective sulfate salts with urea in aqueous solutions. Synthesized metal oxide hydroxides were characterized using Brunauer-Emmett-Teller (BET) surface area and Barrett-Joiner-Halenda porosity (BJH), X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM) and energy-dispersive X-ray microanalysis (EDX). These oxides were taken for an experimental evaluation of their reactivity with sulfur mustard (HD or bis(2-chloroethyl)sulfide), soman (GD or (3,3'-Dimethylbutan-2-yl)-methylphosphonofluoridate) and VX agent (S-[2-(diisopropylamino)ethyl]-O-ethyl-methylphosphonothionate). The presence of Zr{sup 4+} dopant can increase both the surface area and the surface hydroxylation of the resulting doped oxides, decreases their crystallites' sizes thereby it may contribute in enabling the substrate adsorption at the oxide surface thus it can accelerate the rate of degradation of warfare agents. Addition of Zr{sup 4+} converts the product of the reaction of ferric sulphate with urea from ferrihydrite to goethite. We found out that doped oxo-hydroxides Zr-FeO(OH) - being prepared by a homogeneous hydrolysis of ferric and zirconium oxo-sulfates mixture in aqueous solutions - exhibit a comparatively higher degradation activity towards chemical warfare agents (CWAs). Degradation of soman or VX agent on Zr-doped FeO(OH) containing ca. 8.3 wt.% of zirconium proceeded to completion within 30 min.

• OSTI ID: 22066233
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 11 Vol. 61; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ADSORPTION
ALUMINIUM OXIDES
AQUEOUS SOLUTIONS
CHEMICAL WARFARE AGENTS
DOPED MATERIALS
HYDROLYSIS
HYDROXYLATION
INFRARED SPECTRA
IRON HYDROXIDES
IRON OXIDES
SCANNING ELECTRON MICROSCOPY
SULFATES
SURFACE AREA
UREA
WARFARE
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ZINC OXIDES
ZIRCONIUM