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Photophysical and photocatalytic properties of Li2M(WO4)2 (M = Co and Ni)

Published online by Cambridge University Press:  31 January 2011

Jun Lv ,
Yupeng Yuan ,
Xianli Huang ,
Haifeng Shi ,
Hanmin Tian ,
Zhaosheng Li ,
Tao Yu ,
Jinhua Ye  and
Zhigang Zou
Jun Lv
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Materials Science and Technology, Nanjing University, Nanjing 210093, China
Yupeng Yuan
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Materials Science and Technology, Nanjing University, Nanjing 210093, China
Xianli Huang
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Physics, Nanjing University, Nanjing 210093, China
Haifeng Shi
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Materials Science and Technology, Nanjing University, Nanjing 210093, China
Hanmin Tian
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Materials Science and Technology, Nanjing University, Nanjing 210093, China
Zhaosheng Li
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Materials Science and Technology, Nanjing University, Nanjing 210093, China
Tao Yu
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Physics, Nanjing University, Nanjing 210093, China
Jinhua Ye
Affiliation:
Photocatalytic Materials Center, National Institute for Materials Science (NIMS), Ibaraki 305-0047, Japan
Zhigang Zou*
Affiliation:
Ecomaterials and Renewable Energy Research Center, National Laboratory of Solid State Microstructures, Nanjing 210093, China; and Department of Physics, Nanjing University, Nanjing 210093, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Li2M(WO4)2 (M = Co and Ni) were synthesized by a conventional solid-state reaction method and characterized by powder x-ray diffraction, Brunauer-Emmet-Teller (BET) measurement, ultraviolet-visible (UV-vis) diffuse reflectance spectra, Raman spectroscopy, and photocatalytic evaluation measurements. Photocatalytic water splitting results showed that Li2M(WO4)2 (M = Co and Ni) exhibited abilities for H2 evolution with Pt cocatalyst from an aqueous methanol solution and for O2 evolution from an aqueous AgNO3 solution under UV light irradiation. Theoretical calculation, absorbance analysis, and photocatalytic H2 evolution experiment revealed that the position of W 5d level shifted to the negative side with respect to the reduced potential of H+/H2. The photocatalytic H2 evolution over Li2M(WO4)2 is discussed from the view of crystal and electronic structure point.

Keywords

AbsorptionCatalyticOxide
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 12: Biomimetic and Bio-enabled Materials Science and Engineering , December 2008 , pp. 3309 - 3315
Copyright
Copyright © Materials Research Society 2008

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References

REFERENCES

1Kato, H., Asakura, K., Kudo, A.: Highly efficient water splitting into H2 and O2 over lanthanum-doped NaTaO3 photocatalysts with high crystallinity and surface nanostructure. J. Am. Chem. Soc. 125, 3082 2003Google Scholar
2Honda, K., Fujishima, A.: Electrochemical photolysis of water at a semiconductor electrode. Nature 238, 37 1972Google Scholar
3Darwent, J.R., Mills, A.: Photo-oxidation of water sensitized by WO3 powder. J. Chem. Soc., Faraday Trans. 78, 359 1982Google Scholar
4Tang, J., Zou, Z., Ye, J.: Photophysical and photocatalytic properties of AgInW2O8. J. Phys. Chem. B 107, 14265 2003CrossRefGoogle Scholar
5Li, Z., Ye, J., Zou, Z.: Photocatalytic properties of MIn(WO4)2 (M = Li, Na and K). J. Mater. Res. 22, 958 2007CrossRefGoogle Scholar
6Zou, Z., Arakawa, H.: Direct water splitting into H2 and O2 under visible light irradiation with a new series of mixed oxide semiconductor photocatalysts. J. Photochem. Photobiol., A 158, 145 2003CrossRefGoogle Scholar
7Ye, J., Zou, Z.: Visible light sensitive photocatalysts In1−xMxTaO4 (M = 3d transition-metal) and their activity controlling factors. J. Phys. Chem. Solids 66, 266 2005CrossRefGoogle Scholar
8Kim, H.G., Borse, P.H., Choi, W., Lee, J.S.: Photocatalytic nanodiodes for visible-light photocatalysis. Angew. Chem. Int. Ed. 44, 4585 2005Google Scholar
9Hara, K., Sayama, K., Arakawa, H.: Photocatalytic hydrogen and oxygen formation over SiO2-supported RuS2 in the presence of sacrificial donor and acceptor. Appl. Catal. Gen. 189, 127 1999Google Scholar
10Alvarez-Vega, M., Rodriguez-Carvajal, J., Reyes-Cardenas, J.G., Fuentes, A.F., Amador, U.: Synthesis and characterization of new double tungstate Li2MII(WO4)2 (M = Co, Ni, and Cu). Chem. Mater. 13, 3875 2001Google Scholar
11Hanuza, J., Maczka, M., van der Maas, J.H.: Vibrational properties of double tungstates of the MIMIII(WO4)2 family (MI = Li, Na, K; MIII = Bi, Cr). J. Solid State Chem. 117, 117 1995Google Scholar
12Hanuza, J., Mqczka, M., Hermanowicz, K., Dereń, P.J., Stre, W., Folcik, L., Drulis, H.: Spectroscopic properties and magnetic phase transitions in scheelite MICr(MoO4)2 and Wolframite MICr(WO4)2 crystals where MI = Li, Na, K, and Cs. J. Solid State Chem. 148, 468 1999Google Scholar
13Boudart, M.: Turnover rate in heterogeneous catalysis. Chem. Rev. 95, 661 1995CrossRefGoogle Scholar
14Yin, J., Zou, Z., Ye, J.: Photophysical and photocatalytic activities of a novel photocatalyst BaZn1/3Nb2/3O3. J. Phys. Chem. B 108, 12790 2004CrossRefGoogle Scholar