Enhancement of stability and photoactivity of TiO2 coatings on annular glass reactors to remove emerging pollutants from waters

摘要: Abstract TiO2 coatings of highly photoactive lab-made titania were prepared on the outer wall inner tube a glass tubular reactor by dip-coating method. The effect decreasing size aggregates to improve adhesion and photoactivity degrade phenol, diclofenac isoproturon was also investigated. Chemical disaggregation particles resulted in lower aggregate size, between 0.1 1 μm, than mechanical disaggregation, 1 10 μm. results tape test showed that either milling material with planetary mill or chemical stabilization necessary obtain acceptable quality be used water treatment applications. SEM images after suspension more homogeneous without surface aggregates. degree increasing roughness support abrasive blasting evaluated. Adhesion substrate slightly when using modified support. wet catalyst during 30 min efficient terms degradation mineralization phenol as model molecule. Subsequent studies two emerging pollutants, isoproturon, enhanced efficiency these coatings. reusability evaluated promising photocatalytic performance observed very low variation decay rate five consecutive usages.