Controllable synthesis of rhombohedral α-Fe2O3 efficient for photocatalytic degradation of bisphenol A. (February 2019)

• Record Type: Journal Article
• Authors: Ye, Chenlu; Hu, Kang; Niu, Zhijuan; Lu, Yiran; Zhang, Lin; Yan, Kai
• Is Part Of: Journal of water process engineering. Volume 27(2019)
• Page Start: 205
• Page End: 210
• Publication Date: 2019-02
• Subjects: Rhombohedral α-Fe2O3 -- P123 -- Bisphenol A -- Photocatalysis -- Pathway; Water-supply engineering -- Periodicals; Saline water conversion -- Periodicals; Seawater -- Distillation -- Periodicals; Sanitary engineering -- Periodicals; Sewage -- Purification -- Periodicals; 627
• DOI: 10.1016/j.jwpe.2018.12.008
• Languages: English
• ISSNs: 2214-7144

Abstract

Graphical abstract: Highlights: A one-step route to control synthesis of rhombohedral α-Fe2 O3 with P123 template-assisted method. The as-made rhombohedral α-Fe2 O3 exhibited the exposed (012) and (110) planes. Highly photocatalytic degradation effiency of BPA by α-Fe2 O3 was proved. Two rational pathways of BPA photo-degradation by α-Fe2 O3 are discussed and proposed. Abstract: One-step controllable synthesis of rhombohedral α-Fe2 O3 photocatalyst has been successfully developed by P123 soft template assisted method. A combination analysis of XRD, BET, SEM and HRTEM has documented that P123 surfactant plays a crucial role in the controllable synthesis of rhombohedral α-Fe2 O3 with the exposure of (110) and (012). The as-obtained α-Fe2 O3 material is efficient for the photocatalytic degradation of Bisphenol A (BPA). About 91% of BPA (30 mg/L) was degraded by using 1 g/L α-Fe2 O3 within 6 h under the simulated sunlight irradiation, which was almost twice higher than that of commercial Fe2 O3 . More importantly, reaction intermediates (e.g., 4, 4′-methylenediphenol, phenol and lactic acid) were confirmed by LC–MS/MS analysis, and the rational pathway of BPA degradation was finally proposed.