TY - JOUR
T1 - 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
AU - Liu, Hui
AU - Yuan, Jian
AU - Jiang, Zhi
AU - Shangguan, Wenfeng
AU - Einaga, Hisahiro
AU - Teraoka, Yasutake
N1 - Funding Information:
Authors acknowledge the support from the National Key Basic Research and Development Program (Nos. 2003CB214500 , 2009CB220000 ), the National Natural Science Foundation of China (No. 20973110 ), and from a grant from the Global-Centre of Excellence in Novel Carbon Resource Sciences, Kyushu University, Japan.
PY - 2012/2
Y1 - 2012/2
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jssc.2011.11.035
DO - 10.1016/j.jssc.2011.11.035
M3 - Article
AN - SCOPUS:84856106653
SN - 0022-4596
VL - 186
SP - 70
EP - 75
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
ER -
