{"id":"CONICETDig_a0656edf4143d4a647bee32a3680ecef","dc:title":"Dise\u00f1o y construcci\u00f3n de un fotorreactor anular conc\u00e9ntrico. Realizaci\u00f3n de ensayos de fotocat\u00e1lisis heterog\u00e9nea utilizando como contaminantes modelo cromo hexavalente y 4-clorofenol","dc:creator":"Schvezov, Carlos Enrique","dc:date":"2026","dc:description":["One of the greatest challenges in Heterogeneous Photocatalysis process for water treatment is to obtain immobilized photocatalyst with a high surface area and good photocatalytic activity, combined with suitable mechanical properties, in order to avoid the catalyst separation and recovery steps. In this paper, nanotubular TiO\u2082 coatings were synthesized by anodic oxidation on commercially pure titanium rings. The TiO\u2082-coated rings were fully characterized and used within a concentric annular modular photoreactor, constructed with commercial glass and Teflon, irradiated with a UVA fluorescent lamp (\uf06cmax = 365 nm) and operated in closed-loop recirculation mode. The paper also details the design and construction of the photoreactor, as well as the photocatalytic activity of the immobilized nanostructured TiO\u2082 photocatalysts in both oxidation and reduction model systems: 4-chlorophenol (4-CP) and Cr(VI), respectively, achieving 50% 4-CP and 100% Cr(VI) removal in 180 minutes, following a pseudo-first-order kinetics. The TiO\u2082-coated Ti rings displayed similar morphology, crystallinity, optical properties, and photocatalytic performance to previously synthesized TiO2-coated Ti plates, confirming the robustness, reproducibility, and scalability of the anodic synthesis technique, regardless of substrate geometry, and demonstrating the feasibility of using TiO\u2082 nanotubular coatings in scalable photoreactors for both oxidative and reductive processes for sustainable water treatment devices."],"dc:format":["application\/vnd.ms-excel","image\/jpeg","application\/octet-stream"],"dc:language":["spa"],"dc:type":"dataset","dc:rights":["info:eu-repo\/semantics\/openAccess","https:\/\/creativecommons.org\/licenses\/by-nc-sa\/2.5\/ar\/"],"dc:identifier":"https:\/\/repositoriosdigitales.mincyt.gob.ar\/vufind\/Record\/CONICETDig_a0656edf4143d4a647bee32a3680ecef"}