Ge 4+ doped TiO 2 for stoichiometric degradation of warfare agents

0377983 - ÚACH 2013 RIV NL eng J - Journal Article
Štengl, Václav - Matys Grygar, Tomáš - Opluštil, F. - Němec, T.
Ge 4+ doped TiO 2 for stoichiometric degradation of warfare agents.
Journal of Hazardous Materials. Roč. 227, AUGUST (2012), s. 62-67. ISSN 0304-3894. E-ISSN 1873-3336
R&D Projects: GA ČR(CZ) GAP106/12/1116
Institutional support: RVO:61388980
Keywords : germanium * homogeneous hydrolysis * titania * urea * warfare agent degradation
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.925, year: 2012

Germanium doped TiO 2 was prepared by homogeneous hydrolysis of aqueous solutions of GeCl 4 and TiOSO 4 with urea. The synthesized samples were characterized by X-ray diffraction, scanning electron microscopy, EDS analysis, specific surface area (BET) and porosity determination (BJH). Ge 4+ doping increases surface area and content of amorphous phase in prepared samples. These oxides were used in an experimental evaluation of their reactivity with chemical warfare agent, sulphur mustard, soman and agent VX. Ge 4+ doping worsens sulphur mustard degradation and improves soman and agent VX degradation. The best degree of removal (degradation), 100% of soman, 99% of agent VX and 95% of sulphur mustard, is achieved with sample with 2wt.% of germanium.
Permanent Link: http://hdl.handle.net/11104/0209984