Synthesis routes of CeO.sub.2./sub. nanoparticles dedicated to organophosphorus degradation: a benchmark

0545139 - FZÚ 2022 RIV GB eng J - Článek v odborném periodiku
Trenque, I. - Magnano, G. C. - Bárta, Jan - Chaput, F. - Bolzinger, M. A. - Pitault, I. - Briançon, S. - Masenelli-Varlot, K. - Bugnet, M. - Dujardin, Ch. - Čuba, V. - Amans, D.
Synthesis routes of CeO₂ nanoparticles dedicated to organophosphorus degradation: a benchmark.
CrystEngComm. Roč. 22, č. 10 (2020), s. 1725-1737. ISSN 1466-8033
GRANT EU: European Commission(XE) 690599 - ASCIMAT
Institucionální podpora: RVO:68378271
Klíčová slova: nanosized cerium oxide * organophosphorus degradation
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 3.545, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1039/c9ce01898k

Exposure to organophosphorus compounds requires an emergency procedure including the availability of efficient decontamination systems. Systems based on nanosized cerium(IV) oxide (CeO2) are highly promising candidates. CeO2 is a heterogeneous catalyst for the degradation of the organophosphorus compounds such as VX agent or sarin. While the synthesis method influences the physicochemical characteristics of the nanoparticle surface and thus their degradation activity, we have compared the degradation activity of nanosized CeO2 powders commercially available, or developed using different synthesis processes, namely hydrothermal process, photochemistry and laser ablation in liquids. In contrast, laser-generated nanoparticles in ultra-pure water show the best activity, while the sample presents the lowest specific surface area. After annealing, almost all samples present a clean surface and the degradation activity is mainly driven by the specific surface area.
Trvalý link: http://hdl.handle.net/11104/0321897