UV-induced photoactive adsorption mechanism of arsenite by anatase TiO2 with high surface hydroxyl group density

- An anatase TiO2 with rich hydroxyl groups has been successful synthesized.
- With UV light, the increased hydroxyl groups enhance the arsenic adsorption capacity.
- The possible mechanism of As(III) adsorption/oxidation on the anatase TiO2 was established.
- Under UV illumination, anatase TiO2functions as both a photocatalyst and adsorbent.