This powerpoint presentation begins by providing a brief overview of photocatalysis for water treatment. Adsorbent catalyst supports are presented, along with synthesis of SiO₂-TiO₂ composites (STC), STC testing and characterization, STC performance testing, and presentation conclusions that indicate the following: STC were created with varying pore sizes and surface areas; TiO₂ addition decreased specific surface area and pore volume; up to 87% of the TiO₂ was available on the surface of the STCs; more TiO₂ surface area was available with increased TiO₂ loading; IEP and band gap energies of the STCs were not largely affected; and, STC successfully degraded TOC of graywater to less than the 500 ppb limit. Includes tables, figures.