Controllable Synthesis and Photocatalytic Activity of TiO2/LaFeO3 Micro-nanofibers†

doi:10.7503/cjcu20130886

Abstract

Abstract:

TiO₂/LaFeO₃ heterostructures were fabricated by electrospinning technique and hydrothermal synthesis method. The physicochemical properties of the catalysts were characterized by scanning electron microscopy(FE-SEM), X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FTIR) and ultraviolet-visible diffuse reflectance spectra(UV-Vis). The photocatalytic activity of TiO₂/LaFeO₃ micro-nanofibers toward the decomposition of methylene blue(MB) was investigated. The results indicate that defect sites of incompletely carbonized TiO₂ fibers are favorable for the growth of LaFeO₃ nanoparticles. The band gap of TiO₂/LaFeO₃ heterostructures is lower than TiO₂ improving the photocatalytic activity. After 140 min TiO₂/LaFeO₃ heterostructures exhibited 65.34% for MB under UV light, and the photocatalytic mechanism of TiO₂/LaFeO₃ heterostructures were analyzed and discussed.

Key words: TiO2/LaFeO3, Heterostructure, Electrospun, Hydrothermal synthesis, Photocatalytic activity

CLC Number:

O614.33

TrendMD:

LIU Yang, JI Hongwei, ZHOU Defeng, ZHU Xiaofei, LI Zhaohui. Controllable Synthesis and Photocatalytic Activity of TiO₂/LaFeO₃ Micro-nanofibers^†[J]. Chem. J. Chinese Universities, 2014, 35(1): 19.

Figures/Tables 9

Fig.1 XRD patterns of PVP/Ti(OC4H9)4(a), incompletely carbonized TiO2(b), TiO2(c), LaFeO3(d), TL1(e) and TL2(f)

Fig.2 FTIR spectra of PVP/Ti(OC4H9)4(a), incompletely carbonized TiO2(b), TiO2(c), LaFeO3(d), TL1(e) and TL2(f)

Fig.3 FE-SEM images of sample PVP/Ti(OC4H9)4(A), TiO2(B), TL1(C), TL2(D), LaFeO3(E) and incompletely carbonized TiO2(F)

Fig.4 EDS spectrum of sample TL2

Fig.5 Schematic illustration for the synthesis process of TiO2/LaFeO3 heterostructures

Fig.6 UV-Vis-NIR spectra(A) and the plot of (Ahν)2 vs. photo energy(hv)(B—D) (A): a. TiO2, b. TL2, c. LaFeO3; (B) TiO2; (C) LaFeO3; (D) TL2.

Fig.7 Photocatalytic degradation rates of MB on the samples

Fig.8 Mechanism schematic diagram of the mechanism of TiO2/LaFeO3 photocatalyst

Table 1 Absolute electronegativity, calculated CB edge, calculated VB position and band gap energy for TiO2 and LaFeO3 at the point of zero charge

Semiconductor	X/eV	Calculated CB position/eV	Calculated VB position/eV	E_g/eV
TiO₂	5.81	-0.20	2.82	3.02
LaFeO₃	5.70	0.19	2.22	2.03

References 36

[1]	Shang M., Wang W. Z., Zhang L., Sun S. M., Wang L., Zhou L., J. Phys. Chem. C, 2009, 113, 14727—14731
[2]	Su C. Y., Shao C. L., Liu Y. C. , Journal of Colloid and Interface Science, 2011, 359, 220—227
[3]	Zhu P. N., Nair A. S., Peng S. J., Peng S. J., Yang S. Y., Ramakrishna S., Appl. Mater. Interfaces, 2012, 4, 581—585
[4]	Jin Q. W., Wang K. X., Wang J. Q., Li X. B., Chen J. S., Chem. Res. Chinese Universites, 2011, 27(5), 886—869
[5]	Jing L. Q., Sun X. J., Xin B. F., Wang B. Q., Cai W. M., Fu H. G., Journal of Solid State Chemistry, 2004, 177(10), 3375—3382
[6]	Shang L., Li B. J., Dong W. J., Chen B. Y., Li C. R., Tang W. H., Journal of Hazardous Materials, 2010, 178, 1109—1114
[7]	Ren W. J., Ai Z. H., Jia F. L., Zhang L. Z., Fan X. X., Zou Z. G., Appl. Catal. B: Environ., 2007, 69(3/4), 138—144
[8]	Zhang L. W., Fu H. B., Zhu Y. F., Adv. Funct. Mater., 2008, 18(15), 2180—2189
[9]	Wang Q. Q., Xu S. H., Shen F. L., Applied Surface Science, 2011, 257, 7671—7677
[10]	Shi Z. L., Zhang X. X., Yao S. H., Particuology, 2011, 9, 260—264
[11]	Mitoraj D., Kisch H., Angew. Chem. Int. Ed., 2008, 47(51), 9975—9978
[12]	Mu J. B., Chen B., Zhang M. Y., Guo Z. C., Zhang P., Zhang Z.Y., Sun Y. Y., Shao C. L., Liu Y. C., Appl. Mater. Interfaces, 2012, 4, 424—430
[13]	Zhang M.Y., Shao C. L., Mu J. B., Zhang Z. Y., Guo Z. C., Zhang P., Liu Y. C., CrystEngComm, 2012, 14, 605—612
[14]	Liu R. L., Ye H. Y., Xiong X. P., Liu H. Q., Materials Chemistry and Physics, 2010, 121, 432—439
[15]	Liu Z. Y., Sun D. D., Guo P., Leckie J. O., Nano Lett., 2007, 7(4), 1081—1085
[16]	Cao T. P., Li Y. J., Wang C. H., Shao C. L., Liu Y. C., Langmuir, 2011, 27, 2946—2952
[17]	Tang P. S., Tong Y., Chen H. F., Cao F., Pan G. X., Current Applied Physics, 2013, 13, 340—343
[18]	Gao K., Li S. D., Applied Surface Science, 2012, 258, 6460—6464
[19]	Jing L. Q., Qu Y. C., Su H. J., Yao C. G., Fu H. G., J. Phys. Chem. C, 2011, 115, 12375—12380
[20]	Folven E., Tybell T., Scholl A., Young A., Retterer S. T., Takamura Y., Grepstad J. K., Nano Lett., 2010, 10, 4578—4583
[21]	Zhang P., Shao C. L., Li X. H., Zhang M. Y., Zhang X., Sun Y. Y., Liu Y. C., Journal of Hazardous Materials, 2012, 237/238, 331—338
[22]	Xu J., Wang W. Z., Shang M., Gao E. P., Zhang Z. J., Ren J., Journal of Hazardous Materials, 2011, 196, 426—430
[23]	Ostermann R., Li D., Yin Y. D., McCann J. T., Xia Y. N., Nano Lett., 2006, 6(6), 1297—1302
[24]	Wang W., Yuan Q., Chi Y., Shao C. L., Li N., Li X. T., Chem. Res. Chinese Universites, 2012, 28(4), 727—731
[25]	Zhang Z. J., Wang W. Z., Wang L., Sun S.M., Appl. Mater. Interfaces, 2012, 4, 593—597
[26]	Zhang P., Shao C. L., Zhang M. Y., Cuo Z. C., Mu J. B., Zhang Z. Y., Zhang X., Liu Y. C., Journal of Hazardous Materials, 2012, 217/218, 422—428
[27]	Zhang P., Shao C. L., Zhang M. Y., Guo Z. C., Mu J. B., Zhang Z. Y., Zhang X., Liang P. P., Liu Y. C., Journal of Hazar-dous Materials, 2012, 229/230, 265—272
[28]	Sun S. M., Wang W. Z., Xu H. L., Zhou L., Shang M., Zhang L., J. Phys. Chem. C, 2008, 112, 17835—17843
[29]	Roberta T. D., Laudeb L. D., Geskin V. M., Lazzaroni R., Gouttebaron R., Thin Solid Films, 2003, 440, 268—277
[30]	Viswanathamurthi P., Bhattarai N., Kim C. K., Kim H. Y., Lee D. R., Inorg. Chem. Commun., 2004, 7, 679—682
[31]	Yan H., Chun W. Y., J. Cryst. Growth, 2005, 274(3), 563—568
[32]	Zhang L., Wang W. Z., Shang M., Sun S. M., Xu J. H., Journal of Hazardous Materials, 2009, 172, 1193—1197
[33]	Zeng H. C., Current Opinion in Chemical Engineering, 2011, 1, 11—17
[34]	Dong W. J., Zhu Y. J., Huang H. D., Jiang L. S., Zhu H. J., Li C. R., Chen B. Y., Shi Z., Wang G., J. Mater. Chem. A, 2013, 1, 10030—10036
[35]	Kaliaguine S., Neste V. A., Szabo V., Gallot J. E., Bassir M., Muzychuk R., Applied Catalysis A: General, 2001, 209, 345—358
[36]	Lv J., Kako T., Zou Z.G., Ye J. H., Appl. Phys. Lett., 2009, 95, 032107-1—032107-3

Controllable Synthesis and Photocatalytic Activity of TiO₂/LaFeO₃ Micro-nanofibers^†

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