Advanced photochemical processes for the manufacture of nanopowders: an evaluation of long-term pilot plant operation

0556373 - FZÚ 2023 RIV GB eng J - Journal Article
Bárta, J. - Prouzová Procházková, Lenka - Škodová, M. - Děcká, K. - Popovich, K. - Janoušková Pavelková, T. - Beck, P. - Čuba, V.
Advanced photochemical processes for the manufacture of nanopowders: an evaluation of long-term pilot plant operation.
Reaction Chemistry & Engineering. Roč. 7, č. 4 (2022), s. 968-977. ISSN 2058-9883. E-ISSN 2058-9883
Institutional support: RVO:68378271
Keywords : aluminum-garnet * ZnO * powders * nanoparticles * nanocrystals * fabrication * dioxide * CeO₂
OECD category: Nano-materials (production and properties)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1039/d1re00374g

Irradiation of aqueous solutions containing dissolved precursors, typically formate anions and soluble metal salts by 254 nm UV light leads to the precipitation of amorphous solid phase. This process, based on interaction of photolysis intermediates and excited states with dissolved compounds is prospective for nanoparticle preparation on industrial scale. Based on our long term experience with operation of UV pilot plant, we propose an UV light-based technology for syntheses of nano-dimensional metal oxides (case study for zinc oxides and yttrium aluminium garnets) feasible in industrial scale. Depending on a solution composition, UV irradiation leads to the formation of gel-like nanoscaled product, it can be either used as is, or further processed, usually dried in air and annealed heat-treated at elevated temperatures (300-1200 °C) creating a fine powder ready for subsequent use in different applications.
Permanent Link: https://hdl.handle.net/11104/0339417