期刊
MATERIALS LETTERS
卷 196, 期 -, 页码 57-60出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.03.023
关键词
BiFeO3; Nanoparticles; Citric acid; Microstructure; Photocatalytic performance; Microwave hydrothermal
资金
- National Natural Science Foundation of China [51372144, 51641207]
- Key Program of Innovative Research Team of Shaanxi Province [2014KCT-06]
The bismuth ferrite (BiFeO3, BFO) photocatalysts were synthesized via a simple microwave hydrothermal process, in which the morphology and size were tailored by using different citric acid concentrations in precursor solution. The photocatalytic activity of prepared samples was evaluated by degrading rhodamine B (Rh B) under UV and visible light irradiation. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible diffuse reflection spectrum (DRS) were used to investigate the samples' crystallinity, purity, morphology and spectral features. When the citric acid loading amount on the BFO sample was 0.02 g, the optimal photocatalytic degradation efficiency was improved to 72.0%. On the basis of the calculated band-gap and the current experiment, the photocatalytic mechanism was also discussed. (C) 2017 Elsevier B.V. All rights reserved.
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