Effective charge separation in BiOI/Cu2O composites with enhanced photocatalytic activity. (6th February 2018)

• Record Type: Journal Article
• Authors: Xia, Yongmei; He, Zuming; Yang, Wei; Bin Tang, ; Lu, Yalin; Hu, Kejun; Su, Jiangbin; Li, Xiaoping
• Is Part Of: Materials research express. Volume 5:Number 2(2018)
• Publication Date: 2018-02-06
• Subjects: Cu2O -- BiOI -- semiconductor -- nanocomposites -- photocatalytic; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aaa9ee
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Novel BiOI/Cu2 O composites were designed and synthesized for the first time by coupling reduction method at low temperature. The samples were characterized by XRD, XPS, SEM, EDS, HRTEM, UV–vis (DRS), FTIR and photo-electro-chemical (PEC) analysis. Results showed that the BiOI/Cu2 O composites consisted of three-dimensional (3D), hierarchical cauliflower-like structure composed of BiOI nanosheet and Cu2 O cubic submicrometer structure, the composite absorption band broadened, and the absorption intensity in the visible region strengthened. And the composites exhibited an excellent photocatalytic performance, which might be attributed to the improvement of the composite absorption and effective charge separation in BiOI/Cu2 O composites. In addition, the possible photocatalytic mechanism was proposed.