期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 529, 期 -, 页码 404-414出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.06.035
关键词
Z-scheme Bi2MoO6/BiFeO3 heterojunction; Nanofibers; Visible-light photocatalysis; Magnetic separability
资金
- National Natural Science Foundation of China [51572045, 51272041, 61201107, 11604044, 91233204]
- National Basic Research Program of China (973 Program) [2012CB933703]
- 111 Project [B13013]
- Natural Science Foundation of Jilin Province of China [20160101313JC]
- Science and Technology Development Program of Jilin Province [20180520192JH]
- Fundamental Research Funds for the Central Universities [2412017FZ009, 2412017QD007, 2412016KJ017]
- China Postdoctoral Science Foundation [2017]
Uniform Bi2MoO6 nanosheets were grown in a high dispersed fashion on electrospun BiFeO3 nanofibers via a solvothermal technique. The loading amount of Bi2MoO6 in the Bi2MoO6/BiFeO3 heterojunction nanofibers could be controlled by adjusting the precursor concentrations in the solvothermal process. The XPS analysis, energy band position calculation and trapping experiments all proved that the Bi2MoO6/BiFeO3 heterojunction is a Z-scheme heterojunction. The Z-scheme Bi2MoO6/BiFeO3 heterojunction had a much higher photocatalytic activity in the visible-light photodegradation of Rhodamine B (RhB) and tetracycline hydrochloride (TC) than pure BiFeO3 nanofibers or pure Bi2MoO6 nanosheets. The enhanced photocatalytic activity was attributed to the formation of Z-scheme Bi2MoO6/BiFeO3 heterojunctions, which could be beneficial to the separation of photogenerated electron-hole pairs. Moreover, the Bi2MoO6/BiFeO3 heterojunction nanofibers could be easily separated under an external magnetic field via the ferromagnetic BiFeO3. After several cycles, the photocatalytic activity of the Bi2MoO6/BiFeO3 heterojunction no longer significantly decreased suggesting that the Bi2MoO6/BiFeO3 heterojunction is stable. These Z-scheme Bi2MoO6/BiFeO3 heterojunction nanofibers with highly visible-light photocatalytic activity, excellent chemical stability and magnetic separability could be useful in many practical applications. (C) 2018 Published by Elsevier Inc.
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