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Titanium dioxide photocatalysis to decompose isopropyl methylphosphonofluoridate (GB) in gas phase

Titanium dioxide photocatalysis to decompose isopropyl methylphosphonofluoridate (GB) in gas phase,10.1016/j.apcatb.2011.05.032,Applied Catalysis B-en

Titanium dioxide photocatalysis to decompose isopropyl methylphosphonofluoridate (GB) in gas phase  
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The adsorption and photocatalytic degradation of nerve agent, isopropyl methylphosphonofluoridate, Sarin (GB) as a real Chemical Warfare Agent (CWA) on powdery Titanium dioxide (TiO2) film have been investigated using Gas chromatography/mass spectrometry (GC/MS) analysis in ambient atmosphere. We found that the ability to decontaminate GB molecules on TiO2 photocatalyst can be estimated to be 42 molecules/nm2, indicating that 1g of TiO2 photocatalyst can decontaminate 3.4mmol of GB molecules as the limitation value to maintain the photocatalytic activity. We also elucidated a plausible photocatalytic decontamination mechanism of GB at the surface of TiO2 photocatalyst on the basis of the results obtained in this study.
Journal: Applied Catalysis B-environmental - APPL CATAL B-ENVIRON , vol. 106, no. 3, pp. 316-322, 2011
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