Y. N. FENG ET AL.
4
0.00 0.05 0.10 0.15
0.0
0.2
0.4
0.6
0.8
1.0
Residual percentage
Ca doping content
Ca doped BF O (5% Mn)
Figure 4. Congro red degradation after 2 h visible light ir-
radiation.
Ca Mn co-doping might bring many states into BFO and
therefore had immense impact on the catalytic behavior.
4. Conclusion
In conclusion, the influence of Ca Mn co-doping on
phase structure, magnetic and photocatalytic properties
of BFO nanofibres was systematically investigated. Mn
doping has triggered some impurity which can later be
suppressed by Ca doping, and in this process, a space
group transition can be observed. Magnetic and photoca-
talytic measurement suggested a dual role of Mn, and by
this co-doping method, the performances can be enhanc-
ed and modulated.
5. Acknowledgements
This work was supported by the Ministry of Science and
Technology of China through a 973-Project under Grant
No. 2009CB623303, NSF of China (51272121 and 5102
5205).
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