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

Xinyi Zhang, Jingxia Yang, Jinjie Wang

Free version: https://onlinelibrary.wiley.com/share/author/MHJEIPMRSH2IDJZFAPJF?target=10.1002/cctc.202301007

Abstract

Layered TiO2  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 TiO2 structure were  confirmed by SEM, TEM, FTIR, XPS and so on. Moreover, the obtained large  sized TiO2 (20~50 μm in length, about 5~10μm in width) were assembled  by N-doped TiO2 thin sheets with about 1.2nm gap in between, resulting  in very high surface area (327.5 m2/g) and abundant Ti3+ 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.