Enhanced Photocatalytic Performance under Visible and Near-Infrared Irradiation of Cu1.8Se/Cu3Se2 Composite via a Phase Junction
- Resource Type
- article
- Authors
- Li-Na Qiao; Huan-Chun Wang; Yang Shen; Yuan-Hua Lin; Ce-Wen Nan
- Source
- Nanomaterials, Vol 7, Iss 1, p 19 (2017)
- Subject
- Cu1.8Se/Cu3Se2 composite
visible
near-infrared
photocatalysis
phase junction
Chemistry
QD1-999
- Language
- English
- ISSN
- 2079-4991
A novel Cu1.8Se/Cu3Se2 composite photocatalyst was prepared by the simple precipitation method. This composite possesses a wide photoabsorption until the range of near-infrared light, and exhibits significantly enhanced photocatalytic activity for methyl orange degradation under visible and near-infrared light irradiation compared with bare Cu1.8Se and Cu3Se2. The mechanism of this outstanding photocatalytic behavior can be explained by the calculated energy band positions. The efficient charge separation via a phase junction of Cu1.8Se/Cu3Se2 composite would make a great contribution to its much-enhanced photocatalytic efficiency.