1. Room Temperature Engineering Crystal Facet of Cu 2 O for Photocatalytic Degradation of Methyl Orange.
- Author
-
Li, Jiwen, He, Meizi, Yan, Jiankun, Liu, Jiahui, Zhang, Jiaxin, and Ma, Jingjun
- Subjects
PHOTODEGRADATION ,CRYSTALS ,BAND gaps ,PHOTOCATALYSTS ,CUPROUS oxide - Abstract
Cuprous oxide (Cu
2 O) has received enormous interest for photocatalysis owing to its narrow band gap of 2.17 eV, which is beneficial for visible-light absorption. In this work, we succeeded in synthesizing Cu2 O nanocrystals with two morphologies, cube and sphere, at room temperature via a simple wet-chemistry strategy. The morphologies of Cu2 O change from cube to sphere when adding PVP from 0 g to 4 g and the mainly exposed crystal faces of cubic and spherical Cu2 O are (100) and (111), respectively. The photocatalytic properties of the as-prepared Cu2 O were evaluated by the photocatalytic degradation of methyl orange (MO). Cubic Cu2 O(100) showed excellent photocatalytic activity. After the optical and photoelectric properties were investigated, we found that cubic Cu2 O(100) has better photoelectric separation efficiency than spherical Cu2 O(111). Finally, the possible mechanism was proposed for cubic Cu2 O(100) degrading MO under visible light. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF