fig20
Figure 20. (A) Schematic VOC molecule absorption and degradation on the hydrophilic TiO2-SiO2 films[260]. (B) TEM image of the as-prepared TiO2-SiO2 photocatalyst[261]. Water contact angle of untreated TiO2 (C) and plasma treated TiO2[263]. (D) This figure is used with permission from the American Physical Society.
