Roles of Bi, M and VO 4 tetrahedron in photocatalytic properties of novel Bi 0.5M 0.5VO 4 (M=La, Eu, Sm and Y) solid solutions for overall water splitting

Hui Liu, Jian Yuan, Zhi Jiang, Wenfeng Shangguan, Hisahiro Einaga, Yasutake Teraoka

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Novel Bi 0.5M 0.5VO 4 (BMV; M=La, Eu, Sm and Y) solid solutions were prepared and studied in this paper. All the samples were proved to produce H 2 and O 2 simultaneously from pure water under the irradiation of UV light. MO bond lengths were proved to increase with M cations by refining cell parameters and atomic positions. Besides, band gaps, energy gaps and photocatalytic activities of BMV also changed with M cations. Both of MO and VO bond lengths were suggested to account for this phenomenon. Inactive A 0.5Y 0.5VO 4 (A=La, Ce) for water splitting proved incorporation of Bi rather than distortion of VO 4 tetrahedron was a critical factor for improving efficiency of overall water splitting by facilitating the generation of electron and hole with lighter effective masses. Replacement of Bi by M cations not only gave indirect effect on band structure but also raised position of conduction band minimum to meet requirement of H 2 production.

Original languageEnglish
Pages (from-to)70-75
Number of pages6
JournalJournal of Solid State Chemistry
Volume186
DOIs
Publication statusPublished - Feb 1 2012

Fingerprint

water splitting
tetrahedrons
Cations
Solid solutions
solid solutions
Positive ions
Bond length
cations
Water
Energy gap
refining
Conduction bands
Ultraviolet radiation
Band structure
Refining
conduction bands
Irradiation
Hydrogen
requirements
irradiation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Roles of Bi, M and VO 4 tetrahedron in photocatalytic properties of novel Bi 0.5M 0.5VO 4 (M=La, Eu, Sm and Y) solid solutions for overall water splitting. / Liu, Hui; Yuan, Jian; Jiang, Zhi; Shangguan, Wenfeng; Einaga, Hisahiro; Teraoka, Yasutake.

In: Journal of Solid State Chemistry, Vol. 186, 01.02.2012, p. 70-75.

Research output: Contribution to journalArticle

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AU - Einaga, Hisahiro

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