Enhanced Cr(VI) Photocatalysis Reduction by Layered N‐doped TiO2 Sheets from Template Free Solvothermal Method

Abstract Layered TiO 2 sheets with high Cr(VI) photoreduction ability were prepared by template free solvothermal method using ethylene glycol (EG) as structure directing agent. EG linking function in the layered TiO 2 structure were confirmed by SEM, TEM, FTIR, XPS and so on. Moreover, the obtained large sized TiO 2 (20~50 μm in length, about 5~10 μm in width) were assembled by N‐doped TiO 2 thin sheets with about 1.2 nm gap in between, resulting in very high surface area (327.5 m 2 /g) and abundant Ti 3+ sites for Cr(VI) adsorption and reduction. This structure can not only have good performance during Cr(VI) photocatalysis reduction application (Cr(VI) removal rate: 0.84 mg*g −1 *min −1 ), but also endow the material with good cycle ability.