Preparation and Photocatalytic Properties of TiO_2 Immobilized on Fiberglass Cloth

摘要

In this study, the TiO_2 immobilized on fiberglass cloth was prepared to improve the photocatalytic activity of TiO_2 and overcome the difficulty of reuse through a set of different procedures. The microstructure and morphology of TiO_2 loaded on FGC were characterized via SEM and XRD, respectively. The photocatalytic activity of TiO_2-fiberglass specimens was assessed by the yield of hydroxyl radicals and the extent to which humic acid (HA) was photodegraded in a small reactor. The result revealed that (i) the crystalline structure of immobilized TiO_2 was nearly unchanged compared with pure P25 nanoparticles. (ii) the TiO_2-fiberglass specimens prepared by PA and HY procedures resulted in more TiO_2 particles loading on FGC and exhibited better photocatalytic activity than by SG procedure. (iii) The steady state concentration of hydroxyl radicals in the photocatalytic system was obtained as 1.11 ×10~(-14) mol·L~(-1). (iv) The TiO_2-fiberglass specimens prepared by HY procedure exhibited good photocatalytic activity on HA degradation.