Please use this identifier to cite or link to this item:
Title: Immobilized particle coating for optimum photon and TiO2 utilization in scaled air treatment photo reactors
Authors: Lugo Vega, Cristina S.
Serrano Rosales, Benito
de Lasa, Hugo
Issue Date: Dec-2016
Publisher: Elsevier
Abstract: This study reports the critical importance of the particle state in TiO2 immobilized photocatalysis. To address this, TiO2 coatings are prepared using two methods: an Air Assisted Spray with an Automatized Spinning Coating (TiO2-AAS-ASC) and a Spread Coating (TiO2-SCM). The state of the TiO2 particles is investigated using SEM and local gravimetry. It is proven that the TiO2-AAS-ASC displays homogeneity, limited particle agglomeration, close to optimum thickness and stability under flow. Furthermore, the prepared coatings are evaluated in terms of photoactivity using acetone in air mineralization in the 24–49 μmol/L initial concentration range. This allows Quantum Efficiency evaluations based on absorbed photons and hydroxyl radical consumed. It is proven that the TiO2-AAS-ASC exhibits a close to expected optimum photoactivity and QYs in the 0.4–0.5 range. Furthermore, when the TiO2-AAS-ASC is assessed in terms of QY per unit weight of photocatalyst (QY/W), it shows a value 3 times higher than the TiO2-SCM. This high photon utilization is close to the best possible level expected for an optimized TiO2 coating.
ISSN: 0926-3373
Other Identifiers: info:eu-repo/semantics/publishedVersion
Appears in Collections:*Documentos Académicos*-- M. en Ciencias y Tecnología Química

Files in This Item:
File Description SizeFormat 
Immobilizedparticlecoating.pdf267,78 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons