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Title: Fabrication of one-dimensional Bi2O3-Bi14MoO24 heterojunction photocatalysts with high interface quality
Authors: Peng, Y
Wang, KK
Xu, J
Chen, QG
Xu, BG 
Xu, AW
Issue Date: 2017
Publisher: Royal Society of Chemistry
Source: CrystEngComm, 2017, v. 19, no. 2, p. 237-245 How to cite?
Journal: CrystEngComm 
Abstract: Novel, one-dimensional Bi2O3-Bi14MoO24 heterostructures with high interface quality were synthesized by high temperature calcination of Bi2MoO6-Bi(OHC2O4)·2H2O precursors in air at 400 °C for 2 h. Bi14MoO24 grew on the Bi2O3 porous rods by crystallographic-oriented epitaxial growth, which increased the interface quality and then provided the smallest penetration barrier for electron-hole pair transfer between Bi2O3-Bi14MoO24 interfaces. The photocatalytic activity of the as-prepared products was evaluated by the degradation of methyl orange (MO) and phenol under solar/visible light irradiation. The results show that Bi2O3-Bi14MoO24 heterostructures display higher photocatalytic activity than that of the pure phase Bi2O3 and Bi14MoO24, and 100% phenol (10 mg L-1) can be degraded in 80 min under visible light irradiation using the Bi2O3-Bi14MoO24 (DS-2) heterostructure as photocatalyst. This enhanced photocatalytic performance is ascribed to the synergistic effect of the suitable band alignment of the Bi2O3 and Bi14MoO24, high interface quality and one-dimensionally ordered nanostructure. Radical scavenger experiments proved that the photogenerated holes and ¨O2 - play key roles during the photodegradation process. This work offers an effective route to the design and fabrication of the junction structures with high interface quality for photocatalytic applications.
EISSN: 1466-8033
DOI: 10.1039/c6ce01948j
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