Decontamination of sulfur mustard and sarin on titania nanotubes

Abstract

in Wiley InterScience (www.interscience.wiley.com).Decontamination reactions of sulfur mustard and sarin were studied on the surface of titania nanotubes and the data were compared with that of bulk titania. Before the reaction studies, titania nanotube samples were made by using hydrothermal method and were characterized by scanning electron microscopy, N 2 BET, X-ray diffractometry, and thermogravimetry. Soon after that, titania nanotube samples were exposed to sulfur mustard and sarin separately at room temperature (308C) and the reactions were monitored by gas chromatography, whereas the reaction products were characterized by GC-MS. The data explore the role of hydrolysis reactions and surface reactions for the decontamination of both sulfur mustard and sarin.

A facile ceria–zirconia binary oxide used for degradation of 2-chloroethyl ethyl sulfide

“…ClC-H 2 scissor mode [13] 1260 SC-H 2 scissor mode [4,13] 1442, 1372 CH 3 deformation modes [13] 2350 CO 2 asymmetric stretching [35] Triplet band between 2850 and 2950 C-H stretching modes [13] 3350 -O-H stretching vibration [9] J Mater Sci with the results obtained on surface of MnO 2 [36,37], V 1.02 O 2.98 [9] and TiO 2 [10].…”

“…It rapidly attracted plenty of attention in this field. So far, a great deal of nanocrystalline metal-oxide-type reactive sorbents have been developed, including ZnO [4], CuO [5], SiO 2 [6] and mixed oxides of alumina [7] nanoparticles, mesoporous manganese oxide [8], V 1.02 O 2.98 [9] and TiO 2 [10] nanotubes, ZnO nanorods [11], etc. Most of them have been found to own superior activity towards CWAs.…”

Nanostructured Metal Oxides for Stoichiometric Degradation of Chemical Warfare Agents

“…neat HD, GD and VX, were hydrolyzed on the surface of TiO 2 , and the reaction with VX is considerably rapid (t 1/2 < 30 min) and approaches the rates attained in liquid decontaminant. Prasad et al ( 2008 ) synthesized titania nanotubes from anatase TiO 2 and NaOH under hydrothermal conditions at 130 °C for 5 days. The decontamination reaction of HD has a linear curve, with a fast initial reaction that reaches a steady state at later stages of the reaction with a rate constant of 0.1156 h −1 and a half-life of 5.99 h, thus indicating the pseudo fi rst order behavior of the decontamination reaction of HD on TiO 2 nanotubes, whereas parent TiO 2 exhibited a rate constant of 0.0214 h −1 and a half-life of 32.39 h. Sarin reacted in a similar fashion: the rate of the decontamination reaction was found to be 0.7536 −1 and the half-life was found to be 0.92 h; on bulk titania, the rate of the reaction was 0.0711 h −1 and the half-life of the reaction was 9.75 h. Ag + -, Cu 2+ -, Ni 2+ -, CO 2 + -, Mn 2+ -and Ru 3+ -modifi ed titania nanotubes have been studied as powder decontaminants against HD.…”

Decontamination of Chemical Warfare Agents

“…The reaction mechanism is similar to as given in Figs 8 to 11. 7.27 Nanosized Metal Oxides as CWA Decontaminants Recently, nanosized particles of MgO, Al 2 O 3 and CaO have been found to be the potential reactive sorbent materials owing to their high surface area, strong adsorbability, potential reactivity towards chemical warfare agents, and these remove the agent rapidly from the contaminated surfaces and degrade them in situ and render the hazardous agents non-toxic [32][33][34][35][36][37][38] . In addition, titania nanotubes, manganese oxide nanotubes were also found to be having promising CWA decontamination properties [76][77][78][79][80] .…”