|About this Abstract
||MS&T22: Materials Science & Technology
||Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
||Synthesis of WO3-AgCl Thin Films for Application in Continuous Photocatalytic Microreactor
||Priscila Hasse Palharim, Carolina de Araújo Gusmão, Bruno Ramos, Antonio Carlos Silva Costa Teixeira
|On-Site Speaker (Planned)
Heterogeneous photocatalysis has shown promising results for wastewater treatment. Among the semiconductors commonly studied, WO3 is a material with interesting properties: its narrow band gap (2.5–2.8 eV) render it active in the wide UV-visible range. Silver-based materials (Ag2S, Ag2WO4, AgCl etc.) can be coupled to WO3 to improve its photocatalytic activity at a low cost, while extending its absorption range into the visible spectrum. In addition to the photocatalytic material, the type of reactor is also important. Although batch reactors are commonly used to evaluate the efficiency of these materials, their use is mainly restricted to laboratory investigations. Continuous microreactors allow an initial evaluation of different photocatalysts at a reduced scale, and enable the study of scaling-up. In this work, thin films of WO3 coupled with AgCl were synthesized, and their photocatalytic performances were assessed in microreactors under simulated sunlight using acetaminophen as a model contaminant.