Development of novel α-Fe2O3/NiTiO3 heterojunction nanofibers material with enhanced visible-light photocatalytic performance

被引:47
作者
Zhang, Ying [1 ]
Gu, Jie [1 ]
Murugananthan, Muthu [2 ]
Zhang, Yanrong [1 ]
机构
[1] Huazhong Univ Sci & Technol, Environm Sci Res Inst, Wuhan 430074, Peoples R China
[2] PSG Coll Technol, Dept Chem, Coimbatore 641004, Tamil Nadu, India
基金
中国国家自然科学基金; 对外科技合作项目(国际科技项目);
关键词
alpha-Fe2O3; nanofibers; Heterojunction; Visible-light-driven; Photocatalyst; Recombination; COMPOSITE PHOTOCATALYSTS; WATER OXIDATION; NANORODS; FE2O3; DEGRADATION; FILM; NI;
D O I
10.1016/j.jallcom.2014.12.193
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In the present work, a heterojunction nanofiber material alpha-Fe2O3/NiTiO3, was synthesized by a two-step method involving calcining process. The characteristic nature of the materials such as composition and optical properties were examined by X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) and the results confirmed the high crystalline behavior and fiber-like heterostructures of the alpha-Fe2O3/NiTiO3 composites. The alpha-Fe2O3/NiTiO3 heterojunction nanofibers were observed to exhibit an enhanced performance in the photocatalytic degradation of organic dye Rhodamine B (RhB) under the visible light irradiation. The superior absorptive behavior of alpha-Fe2O3/NiTiO3 heterojunction nanofibers to pure alpha-Fe2O3 nanofibers in the longer wavelength region was confirmed by UV-vis Diffuse Reflectance Spectral (DRS) studies. The photoluminescence (PL) spectral studies indicated that the recombination of photogenerated electron-hole pairs has been decreased in the case of alpha-Fe2O3/NiTiO3. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:110 / 116
页数:7
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