Cu插层H_2Ti_3O_7复合材料的制备与表征

Preparation and Photocatalytic Activity of Cu-Ti_3O_7

文章采用剥离–重堆积法制备Cu-Ti3O7插层材料。该材料为多级介孔结构,表面积为182 m2·g–1。可见光下(300 W氙灯,加滤光片,λ≥420 nm),插层材料对MB的降解率为59.1%。插层材料的高光催化活性主要来自于层间的Cu2+有效地调节了半导体的能带结构,减小了带隙宽度,拓展了材料的光响应范围。

Mesoporous Cu-Ti3O7 nanohybrids were prepared through an exfoliation-restacking route. It was revealed that the present nanohybrids are mesoporous with specific surface areas of about 182 m2.g-1. The intercalated nanohybrids exhibit good photocatalytic activities in the degradation of methylene blue under visible-light irradiation. The superior photocatalytic performance of the nanohybrids is predominantly attributed to Cu2＋ effectively adjust the band structure of the semiconductor, expanding the scope light response of the material.