Photocatalytic Decomposition of Ethyl S-Diisopropylaminoethyl Methylphosphonothioate (VX) by Ag and Au Metal Deposited on TiO2 in Aqueous Phase

Ethyl S-diisopropylaminoethyl methylphosphonothioate (VX) in aqueous phase was decomposed by Ag– and Au–TiO2 photocatalyst. Photocatalytic decomposition rate, rVX, was accelerated in the order of Ag–TiO2 > Au–TiO2 > bare TiO2 as a consequence of improving charge separation and increasing parti...

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Bibliographic Details
Published in:Chemistry letters 2013-05, Vol.42 (5), p.518-520
Main Authors: Kishi, Shintarou, Hirakawa, Tsutomu, Sato, Keita, Komano, Asuka, Nishimoto, Chifumi K, Mera, Nobuaki, Kugishima, Masahiro, Sano, Taizo, Negishi, Nobuaki, Ichinose, Hiromichi, Seto, Yasuo, Takeuchi, Koji
Format: Article
Language:English
Subjects:
Charge
Cleavage
Decomposition
Deposition
Gold
Molecular structure
Photocatalysis
Silver
Titanium dioxide
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Summary:Ethyl S-diisopropylaminoethyl methylphosphonothioate (VX) in aqueous phase was decomposed by Ag– and Au–TiO2 photocatalyst. Photocatalytic decomposition rate, rVX, was accelerated in the order of Ag–TiO2 > Au–TiO2 > bare TiO2 as a consequence of improving charge separation and increasing partial decomposition of VX molecular structure. It was suggested that the photocatalytic decomposition of VX molecule at the Au– and Ag–TiO2 was carried out by C–N, P–S cleavage and oxygenation.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.130015