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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Bibliographic Details
Published inJournal of alloys and compounds Vol. 507; no. 2; pp. L35 - L37
Main Authors Zhao, Jingang, Ma, Junfeng, Dai, Changhong, Liu, Ye, Song, Zuwei, Sun, Yong, Fang, Jingrui, Gao, Chang, Liu, Zhensen, Sun, Xia
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2010
Subjects
Catalysis
Chemical synthesis
Nanostructured materials
TEM
Catalysis
Chemical synthesis
Nanostructured materials
TEM
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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.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2010.08.001