Facile synthesis of a visible light α-Fe2O3/BiOBr composite with high photocatalytic performance. Issue 5 (7th January 2016)

• Record Type: Journal Article
• Authors: Wen, Xiao-Ju; Zhang, Chang; Niu, Cheng-Gang; Zhang, Lei; Huang, Da-Wei; Wang, Xiao-Yu; Zhang, Xue-Gang; Zeng, Guang-Ming
• Is Part Of: RSC advances. Volume 6:Issue 5(2016)
• Page Start: 4035
• Page End: 4042
• Publication Date: 2016-01-07
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra21359b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Novel α-Fe2 O3 /BiOBr composites were synthesized by a simple in hydrolysis method for the first time, which showed enhanced photocatalytic performance for the photocatalytic degradation of organic dyes under visiblelight irradiation. Abstract : Novel α-Fe2 O3 /BiOBr composites were synthesized by a simple in hydrolysis method for the first time, and were fully characterized by X-ray diffraction patterns (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and UV-vis diffuse reflectance spectra (DRS). The α-Fe2 O3 /BiOBr composite showed much higher visible-light-driven (VLD) photocatalytic activity than pure α-Fe2 O3 and BiOBr for rhodamine B (RhB) degradation. Specifically, the 10Fe/100Bi composite showed the highest photocatalytic activity for the degradation of dyes under visible light irradiation. The stability of the photocatalyst is found to be satisfying, which gives it potential in practical applications. The high photocatalytic activity could be attributed to the enhanced light absorption and the improved separation of photogenerated charge carriers, due to the formation of a p–n heterojunction between α-Fe2 O3 and BiOBr.