Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.psep.2018.09.012
Document author version
Title (Primary) Preparation, characterization, and application of TiO2/Carbon composite: Adsorption, desorption and photocatalysis of Gd-DOTA
Author Dávila-Jiménez, M.M.; Elizalde-González, M.P.; Guerrero-Morales, M.A.; Mattusch, J.
Source Titel Process Safety and Environmental Protection
Year 2018
Department ANA
Volume 120
Page From 195
Page To 205
Language englisch
Keywords Photocatalyst; TiO2; Adsorbent; Carbon; Gadolinium complex; Photoproducts of DOTAREM; IC-ICP-MS/ESI-QToF-MS
Abstract The preparation methodology of a photocatalytic acting composite consisting of TiO2/Carbon carrying 24.5% of TiO2 is described. The environmental friendly TiO2/Carbon bifunctional material combining immobilized photocatalytic properties with a macroparticular carbonaceous ad-/desorbent was prepared in one-step procedure at low temperature from guava seeds and Ti(IV) oxysulfate as carbon and photocatalyst precursors, respectively. With artificial solar radiation, the composite can act as a photocatalyst for the degradation of the emerging pollutant, gadolinium-based contrast agent Gd-DOTA in aqueous solution with a degradation yield of 95%. For its reuse, the composite can be separated from the solution without centrifugation. The TiO2/Carbon composite is also able to adsorb and desorb the non-complexed gadolinium (Gd3+) ion once the cyclic Gd-DOTA is destroyed. The resulting photodegradation /-transformation as well adsorption and desorption phenomena were studied by analyzing the occurring Gd-species using ion exchange chromatography coupled to element and molecule selective mass spectrometers on-line (IEC-ICP-MS/ESI-QToF-MS).
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=21039
Dávila-Jiménez, M.M., Elizalde-González, M.P., Guerrero-Morales, M.A., Mattusch, J. (2018):
Preparation, characterization, and application of TiO2/Carbon composite: Adsorption, desorption and photocatalysis of Gd-DOTA
Process Saf. Environ. Protect. 120 , 195 - 205 10.1016/j.psep.2018.09.012