Improved Photocatalytic Performance of a Novel Fe3O4@SiO2/Bi2SiO5 Hierarchical Nanostructure with Magnetic Recoverability. (17th November 2015)

• Record Type: Journal Article
• Authors: Zhang, Xinxin; Dong, Xiaoli; Leng, Baiyu; Ma, Hongchao; Zhang, Xiufang
• Other Names: Umar Ahmad Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2015(2015)
• Publication Date: 2015-11-17
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2015/428103
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : Magnetic Fe3 O4 @SiO2 /Bi2 SiO5 composites with a novel hierarchical nanostructure were synthesized by sol-gel and hydrothermal methods and were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and UV-visible diffuse reflectance spectroscopy (UV-vis DRS). It was found that the introduction of Fe3 O4 @SiO2 could turn the morphology of Bi2 SiO5 from close-grained slab to hollow hierarchical architecture with fabric-structure. The Fe3 O4 @SiO2 /Bi2 SiO5 composite showed enhanced photodegradation efficiency for the degradation of reactive brilliant red dye (X-3B) in aqueous solution under simulated sunlight irradiation, as compared with that of commercial P25. In addition, the Fe3 O4 @SiO2 /Bi2 SiO5 composite exhibited good magnetic recoverability and excellent photocatalytic stability (no obvious activity loss after recycling tests).