Grafting Transition Metal–Organic Fragments onto W/Ta Mixed-Addendum Nanoclusters for Broad-Spectrum-Driven Photocatalysis

Authors

  • Tian-Zhan Zhang,

    1. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787
    Search for more papers by this author
  • Dr. Shuang Yao,

    1. College of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022 (P. R. China)
    Search for more papers by this author
  • Dr. Zhi-Ming Zhang,

    Corresponding author
    1. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787
    • Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787===

    Search for more papers by this author
  • Ying Lu,

    1. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787
    Search for more papers by this author
  • Prof. Yang-Guang Li,

    1. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787
    Search for more papers by this author
  • Prof. En-Bo Wang

    Corresponding author
    1. Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787
    • Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Renmin Street No. 5268, Changchun, Jilin 130024 (P. R. China), Fax: +86-431-85098787===

    Search for more papers by this author

Abstract

Two new transition-metal (TM)-containing polytantalotungstates, CsNa2H[Cu(bpy)(H2O)3]3{[Cu(bpy)2]2[Cu(bpy)(H2O)2]3[Ta4O6(SiW9Ta3O40)4]}17 H2O (1) and K4Na4H4[Ta4O6(SiW9Ta3O40)4][Cu(apy)(H2O)2]442 H2O (2) (bpy=2,2′-bipyridine, apy=3-aminopyridine), have been synthesised under hydrothermal conditions. Both compounds 1 and 2 were determined and characterised by single-crystal X-ray diffraction analysis, thermogravimetric analysis, IR spectroscopy, UV/Vis spectroscopy and elemental analysis. Compounds 1 and 2 contain W/Ta mixed-addendum nanoclusters decorated by TM–organic fragments. Compounds 1 and 2 are the first TM-containing polytantalotungstates promise a more diverse set of structures of the polytantalotungstate family. The obtained materials can harvest a wide spectrum of solar light, from UV to near-infrared (NIR) wavelength. Photocatalytic study revealed that compounds 1 and 2 exhibited UV- and visible-light-driven photocatalytic water splitting activity. Compound 1 could also be used as a catalyst for the photocatalytic decomposition of 2,4-dichlorophenol in water with NIR-light irradiation. This is the first NIR photocatalyst obtained in polyoxometalate chemistry.

Ancillary