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Synthesis and characterization of TiO2/Mg(OH)2composites for catalytic degradation of CWA surrogates
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SYSNO ASEP 0524956 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synthesis and characterization of TiO2/Mg(OH)2composites for catalytic degradation of CWA surrogates Author(s) Šťastný, Martin (UACH-T) SAI, RID
Štengl, Václav (UACH-T) RID, ORCID, SAI
Henych, Jiří (UACH-T) SAI, RID, ORCID
Tolasz, Jakub (UACH-T) RID, ORCID, SAI
Kormunda, M. (CZ)
Ederer, J. (CZ)
Issa, G. (BG)
Janoš, P. (CZ)Number of authors 8 Source Title RSC Advances. - : Royal Society of Chemistry
Roč. 10, č. 33 (2020), s. 19542-19552Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords decomposition ; surface reaction ; titanium dioxide Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects LM2018124 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UACH-T - RVO:61388980 UT WOS 000537781700045 EID SCOPUS 85085637907 DOI 10.1039/d0ra00944j Annotation Surface catalyzed reactions can be a convenient way to deactivate toxic chemical warfare agents (CWAs) and remove them from the contaminated environment. In this study, pure titanium oxide, magnesium hydroxide, and their composites TiO2/Mg(OH2) were prepared by thermal decomposition and precipitation of the titanium peroxo-complex and/or magnesium nitrate in an aqueous solution. The as-prepared composites were examined by XRD, XPS, HRTEM, and nitrogen physisorption. Their decontamination ability was tested on CWA surrogates and determined by high-performance liquid chromatography (HPLC) and gas chromatography coupled with mass spectrometry (GC-MS). Dimethyl methyl phosphonate (DMMP) was used as a G simulant for the nerve agents sarin (GB) and soman (GD) while 2-chloroethyl ethyl sulfide (2-CEES) and 2-chloroethyl phenyl sulfide (2-CEPS) were used as surrogates of sulfur mustard (HD). The activity of the as-prepared composites was correlated with acid-base properties determined by potentiometric titrations and pyridine adsorption studied byin situDRIFTS. The mixing of Ti and Mg led to an increase of the surface area and the amount of surfaceOH groups (with an increasing amount of Ti) that caused improved degradation of DMMP. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0309178
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