Dielectric behavior, band gap, in situ X-ray diffraction, Raman and infrared study on (1 - X)BiVO4-x(Li0.5Bi 0.5)MoO4 solid solution

Di Zhou, Li Xia Pang, Wei Guo Qu, Clive A. Randall, Jing Guo, Ze Ming Qi, Tao Shao, Xi Yao

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The phase transition in the (1 - x)BiVO4-x(Li 0.5Bi0.5)MoO4 solid solution was first confirmed by the in situ X-ray diffraction method. The merging of the (2 0 0) and (0 2 0) diffraction peaks in the X-ray diffraction data, and the overlapping of the δs(VO4) and δas(VO 4) modes for Raman and Infrared spectra of x = 0.06 sample were observed at 110-115 °C. The splitting of infrared bands at around 325 cm-1 for x = 0.125 sample was revealed at -10 °C. The dielectric permittivity peaks as a function of temperature can be observed at high frequencies (>10 kHz), which is corresponding to the ferroelastic phase transition. In the monoclinic solid solution region, the band gaps were found to lie between 2.2-2.35 eV a range of interest as photo-catalytic materials.

Original languageEnglish (US)
Pages (from-to)5009-5014
Number of pages6
JournalRSC Advances
Volume3
Issue number15
DOIs
StatePublished - Apr 21 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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