Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (10): 2170.doi: 10.7503/cjcu20140339
• Physical Chemistry • Previous Articles Next Articles
JI Lei*(), WANG Haoren, YU Ruimin
Received:
2014-04-10
Online:
2014-10-10
Published:
2014-09-19
Contact:
JI Lei
E-mail:jileiwipm@163.com
Supported by:
CLC Number:
TrendMD:
JI Lei, WANG Haoren, YU Ruimin. Preparation, Characterization and Visible-light Photocatalytic Activities of p-n Heterojunction BiOBr/NaBiO3 Composites†[J]. Chem. J. Chinese Universities, 2014, 35(10): 2170.
Fig.3 UV-Vis diffuse reflectance spectra(A) and band gaps(B) of different samples a. NaBiO3; b. 10.5%BiOBr/NaBiO3; c. 23.6%BiOBr/NaBiO3; d. 40.1%BiOBr/NaBiO3; e. 61.7%BiOBr/NaBiO3; f. BiOBr.
Fig.4 Dark adsorption and visible light-induced photocatalytic degradation of RhB over different samples a. NaBiO3; b. 10.5%BiOBr/NaBiO3; c. 23.6%BiOBr/NaBiO3; d. 40.1%BiOBr/NaBiO3; e. 61.7%BiOBr/NaBiO3; f. BiOBr.
Fig.7 ·OH trapping PL spectra during irradiation of samples in 5×10-4 mol/L terephthlic acid solution(λex=315 nm, A) and PL spectra of 40.1%BiOBr/NaBiO3(B) (A) a. NaBiO3; b. 10.5%BiOBr/NaBiO3; c. 23.6%BiOBr/NaBiO3; d. 40.1%BiOBr/NaBiO3; e. 61.7%BiOBr/NaBiO3; f. BiOBr. (B) t/min: a. 0; b. 60; c. 120; d. 180.
Fig.8 Diagram of the band energy of BiOBr and NaBiO3 before contact(A) and formation of a p-n junction and the proposed charge separation process of BiOBr/NaBiO3 heterostructures under visible light irradiation(B)
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