@article{10902/21916, year = {2021}, month = {6}, url = {http://hdl.handle.net/10902/21916}, abstract = {Using a photocatalytic window can simplify the design of an optofluidic microreactor, providing also a more straightforward operation. Therefore, the development of TiO2 coatings on glass substrates seems appealing, although a priori they would imply a reduced accessible area compared with supported nanoparticle systems. Considering this potential drawback, we have developed an endurable photocatalytic window consisting on an inner protective SiO2 layer and an outer mesoporous anatase layer with enhanced surface area and nanoscopic crystallite size (9–16 nm) supported on a glass substrate. The designed photocatalytic windows are active in the CO2-to-methanol photocatalytic transformation, with maximum methanol yield (0.52 μmol·h-1·cm-2) for greatest porosity values and minimum crystallite size. Compared with benchmark supported nanoparticle systems, the nanoscopic thickness of the coatings allowed to save photoactive material using only 11–22 μg·cm-2, while its robustness prevented the leaching of active material, thus avoiding the decay of performance at long working periods.}, organization = {The authors gratefully acknowledge the financial support from the Basque Government (PIBA18/14; IT1291-19), the Spanish Ministry of Science and Innovation (MICINN projects: PID2019-104050RA-I00 and PID2019-108028GB-C21), the European Union’s Horizon 2020 research and innovation program (grant agreement No 792103 SOLWARIS) and the Ramón y Cajal programme (RYC-2015-17080). Technical and human support provided by SGIker (UPV/EHU, MICINN, GV/EJ, and ESF) is also acknowledged.}, publisher = {Elsevier}, publisher = {iScience, 2021, 24(6), 102654}, title = {Porous TiO2 thin film-based photocatalytic windows for an enhanced operation of optofluidic microreactors in CO2 conversion}, author = {Angulo Ibáñez, Adrián and Martínez Goitandia, Amaia and Albo Sánchez, Jonathan and Aranzabe Basterrechea, Estibaliz and Beobide Pacheco, Garikoitz and Castillo García, Óscar and Pérez Yáñez, Sonia}, }