Journal of Materials Science

, Volume 49, Issue 4, pp 1893–1902 | Cite as

Microwave hydrothermal synthesis of MSnO3 (M2+ = Ca2+, Sr2+, Ba2+): effect of M2+ on crystal structure and photocatalytic properties

  • Wanjun Wang
  • Shijing Liang
  • Kaining Ding
  • Jinhong Bi
  • Jimmy C. Yu
  • Po Keung Wong
  • Ling Wu


A series of alkaline earth metal stannates, MSnO3 (M2+ = Ca2+, Sr2+, Ba2+), has been synthesized by a microwave hydrothermal method and subsequent heat treatment process for the first time. The obtained samples are characterized by X-ray diffraction, Brunauer–Emmett–Teller (BET) surface area analysis, UV–Vis diffuse reflectance spectroscopy, scanning electron microscopy, and a photoluminescence technique with terephthalic acid. It is found that the variation of M2+ radius in MSnO3 leads to a change in the crystal structure and the photocatalytic degradation activity for methyl orange. With the increase of M2+ radius, dipole moments are generated in octahedral units because of the octahedral tilting distortion, which may facilitate the mobility of charge carriers and improve the activities of MSnO3. The wider band gap and larger BET surface area caused by the decrease of M2+ radius also contribute to photocatalytic performances. In addition, compared with the conventional hydrothermal method, higher activity is achieved on the samples prepared by means of the microwave method. Our findings may provide insights in fabrication of highly efficient photocatalysts by adjusting the counter-cation radius.


Photocatalytic Activity Methyl Orange SrMoO4 PbMoO4 TiO6 Octahedra 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the National Natural Science Foundation of China (21003022, 21177024, 21273036, and 21303019) and the Natural Science Foundation of Fujian Province (2011J01041).


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Wanjun Wang
    • 1
    • 2
  • Shijing Liang
    • 1
  • Kaining Ding
    • 1
  • Jinhong Bi
    • 1
  • Jimmy C. Yu
    • 2
  • Po Keung Wong
    • 3
  • Ling Wu
    • 1
  1. 1.State Key Laboratory Breeding Base of Photocatalysis, Research Institute of PhotocatalysisFuzhou UniversityFuzhouChina
  2. 2.Department of Chemistry and Institute of Environment, Energy and SustainabilityThe Chinese University of Hong KongShatinHong Kong, China
  3. 3.School of Life SciencesThe Chinese University of Hong KongShatinHong Kong, China

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