Synthesis of La 1− xFe xVO 4 solid solutions and their photocatalytic activity
Nanocrystalline La 1− x Fe x VO 4 ( x = 0, 0.05, 0.10, 0.20) solid solution powders were successfully synthesized via a low-temperature molten salt method. The products were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM). The results show a gradual phase t...
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Published in | Journal of alloys and compounds Vol. 507; no. 2; pp. L35 - L37 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
2010
|
Subjects | |
Online Access | Get full text |
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Summary: | Nanocrystalline La
1−
x
Fe
x
VO
4 (
x
=
0, 0.05, 0.10, 0.20) solid solution powders were successfully synthesized via a low-temperature molten salt method. The products were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM). The results show a gradual phase transformation from monoclinic to tetragonal-phase with the increase of
x value, accompanied by a remarkable morphology variation from nearly spherical nanoparticles to nanorods, nanosheets. Fe
3+ doped LaVO
4 can be fully stabilized in tetragonal-phase at
x
=
0.20, whereas only a monoclinic-phase can be obtained without adding Fe
3+. The followed photocatalytic degradation data present that the metastable tetragonal-phase exhibits higher photocatalytic activity than the monoclinic. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2010.08.001 |