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Sulfated TiO2 Decontaminate 2-CEES and DMMP in Vapor Phase

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Abstract

An acid photocatalyst TiO2, modified with H2SO4, is prepared and used to decontaminate Chemical Warfare Agents (CWAs) simulants 2-CEES (2-chloroethyl ethyl sulfide) and DMMP (dimethyl methylphosphonate) in vapor phase. Compared with the unmodified pure TiO2 photocatalyst, the adsorption capacity on the sulfated photocatalyst increases by 50%, and the conversion for 2-CEES increases more than 20%. It is found that the durability for decontaminating DMMP is delayed by 200 min with the modified photocatalyst. The surface characteristics of the photocatalysts are analyzed by XPS and FT-IR. The results show that more Lewis and Brönsted acid sites, considered to be responsible for improving the reactivity performance of photocatalysts, are formed on the sulfated TiO2.

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Acknowledgments

The work described here is financially supported by the National Natural Science Foundation of China (Nos. 20473113).

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Authors and Affiliations

  1. Research Institute of Chemical Defence, Beijing, 102205, China

    ShiTong Han, HaiLing Xi & DaNian Xu

  2. Research Institutes of Photocatalysis, Fuzhou University, Fuzhou, Fujian, 350002, China

    ShiTong Han, GuoYing Zhang, XianZhi Fu & XuXu Wang

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  1. ShiTong Han
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  2. GuoYing Zhang
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  3. HaiLing Xi
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  4. DaNian Xu
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  5. XianZhi Fu
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Correspondence to ShiTong Han.

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Han, S., Zhang, G., Xi, H. et al. Sulfated TiO2 Decontaminate 2-CEES and DMMP in Vapor Phase. Catal Lett 122, 106–110 (2008). https://doi.org/10.1007/s10562-007-9350-z

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  • DOI: https://doi.org/10.1007/s10562-007-9350-z

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