煅烧温度对铁酸铋纤维形貌及性能的影响

doi:10.11896/j.issn.1005-023X.2018.14.003

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Abstract By an electrospinning and a subsequent calcination process, a series of BiFeO₃ (BFO) fibers differing in calcining temperature were prepared. The calcining temperature dependence of the photoabsorbing, ferroelectric, ferromagnetic and photocatalytic properties of the resultant BFO fibers were investigated, and the morphology and phase composition were also characterized. Results showed that the continuous perovskite BFO fibers with smooth surfaces, diameters of about 220 nm, and a few Bi₂₅FeO₄₀ impurity can be obtained by calcination at 550 ℃. A higher calcining temperature (600 ℃) causes the elimination of impurity phase, the decrement of fiber diameter, as well as the morphology transition to the bead string. Moreover, the further increased temperature (approaching 700 ℃) will result in the morphology of irregularly short sticks due to the breakup and collapse of BFO fibers. The electrospun fibers calcined at 600 ℃ show outstanding ferroelectricity, high photocatalytic activity and stability, which can be attri-buted to better crystallinity, narrower band gap and unique one-dimensional morphology.

Key words： electrospinning BFO fiber calcining temperature morphology

Published: 31 July 2018

CLC number:	TQ135.32
	O482.54

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	Articles by authors
	LI Yan’an
	YANG Rulu
	ZHANG Hua
	SUN Haibin
	SI Weimeng
	LI Jiao

Cite this article:

LI Yan’an,YANG Rulu,ZHANG Hua, et al. Effect of Calcining Temperature on Morphology and Properties of BiFeO₃ Fibers[J]. Materials Reports, 2018, 32(14): 2340-2344.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.14.003 OR http://www.mater-rep.com/EN/Y2018/V32/I14/2340

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