Synthesis and characterization of Fullerene modified ZnAlTi-LDO in photo-degradation of Bisphenol A under simulated visible light irradiation. (September 2017)

• Record Type: Journal Article
• Authors: Ju, Liting; Wu, Pingxiao; Lai, Xiaolin; Yang, Shanshan; Gong, Beini; Chen, Meiqing; Zhu, Nengwu
• Is Part Of: Environmental pollution. Volume 228(2017)
• Page Start: 234
• Page End: 244
• Publication Date: 2017-09
• Subjects: Fullerene -- ZnAlTi-LDO -- Photocatalytic -- Bisphenol A -- Visible light irradiation; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2017.05.038
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: In this study, ZnAlTi layered double hydroxide (ZnAlTi-LDH) combined with fullerene (C60 ) was fabricated by the urea method, and calcined under vacuum atmosphere to obtain nanocomposites of C60 -modified ZnAlTi layered double oxide (ZnAlTi-LDO). The morphology, structure and composition of the nanocomposites were analyzed by Scanning Electron Microscopy, High-resolution transmission electron microscopy, X-ray diffraction patterns, Fourier transform infrared and specific surface area. The UV-vis diffuse reflectance spectra indicated that the incorporation of C60 expanded the absorption of ZnAlTi-LDO to visible-light region. The photo-degradation experiment was conducted by using a series of C60 modified ZnAlTi-LDO with different C60 weight percentage to degrade Bisphenol A (BPA) under simulated visible light irradiation. In this experiment, the degradation rate of C60 modified ZnAlTi-LDO in photo-degradation of BPA under simulated visible light irradiation was over 80%. The intermediates formed in the degradation of BPA process by using LDO/C60 -5% were 4-hydroxyphenyl-2-propanol, 4-isopropenylphenol and Phenol. Photogenerated holes, superoxide radical species, ·OH and singlet oxygen were considered to be responsible for the photodegradation process, among which superoxide radical species and ·OH played a predominant role in the photocatalytic reaction system. C60 modified ZnAlTi-LDO catalysts for photocatalytic reduction shows great potential in degradation of organic pollutants and environmental remediation. Graphical abstract: Highlights: C60 modified ZnAlTi-LDO enhance the photocatalytic reduction of BPA. C60 modified ZnAlTi-LDO was an efficient photocatalytic in the degradation of BPA under visible light. Superoxide radical species played a predominant role in the photocatalytic reaction system. C60 expanded the absorption of ZnAlTi-LDO to visible-light region with the increasing content of C60 .