Electrospun ZnO/Bi2O3 Nanofibers with Enhanced Photocatalytic Activity. (3rd March 2014)

• Record Type: Journal Article
• Authors: Yang, Yingying; Xu, Lingling; Su, Chunyan; Che, Jixin; Sun, Wenjun; Gao, Hong
• Other Names: Khataee Alireza Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2014(2014)
• Publication Date: 2014-03-03
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2014/130539
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : ZnO/Bi2 O3 nanofibers were synthesized by a simple electrospinning method and both the UV and visible light responsive photocatalytic properties were studied by the decolorization of RhB dye. Thermogravimetric analysis/differential thermal analysis (TGA-DTA), X-ray diffraction (XRD), scanning electron microscope (SEM), and UV-vis diffuse reflectance spectra (DRS) were employed to study the structure, morphology, and optical properties of the ZnO/Bi2 O3 nanofibers, respectively. The relationship between the ZnO/Bi2 O3 ratio and photocatalytic activity was also studied, and the composite with a molar ratio of 23 : 1 demonstrated the best activity under both excitations. The photocatalytic mechanisms for the composite fibers can be described as the direct photocatalysis under UV excitation and photosensitation for visible light irradiation. The enhanced photocatalytic activities can be ascribed to the effective electron-hole pairs separation that leads to the promoted photocatalytic efficiency.