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| POMOF based on H3PW12O40·xH2O and 3,5-diamino-1,2,4-triazole: Synthesis, characterization, and catalytic oxidation performance for iodine ion |
| Author Name | Affiliation | E-mail | | QIU Shuang-Yan | School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China | | | GUO Jun | School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China
State Key Laboratory for Efficient Utilization of Medium and Low Grade Phosphate Rock and Its Associated Resources, Wengfu(Group) Co., Ltd., Guiyang 550014, China | justin_gixt@163.com | | ZHANG Dan | State Key Laboratory for Efficient Utilization of Medium and Low Grade Phosphate Rock and Its Associated Resources, Wengfu(Group) Co., Ltd., Guiyang 550014, China | | | LU Lin | School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China | | | ZHANG Yi-Ju | School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China | | | ZHANG Tai-Wen | School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China | |
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| Abstract: A novel and rare case of Keggin-type polyoxometalate-based metal-organic framework compound was synthesized by solvothermal method, namely[Cu4(3,5-datrz)4] [PWⅥ9WⅤ3O39]·H2O (1) (3,5-datrz=3,5-diamino-1,2,4-triazole). Compound 1 was characterized by single-crystal X-ray diffraction, Fourier transform infrared spectroscopy, Thermogravimetric analysis, powder X-ray diffraction, and elemental analysis. The single-crystal X-ray diffraction analysis reveals that compound 1 crystallizes in the monoclinic system with space group C2/c. The asymmetric unit contains two Cu+ ions, two 3,5-datrz ligands, one-half of Keggin-type phosphotungstic acid anions, and one water molecule. Except for lattice water, the components are linked by covalent bonding to form Keggin-type polyoxometa-late-based metal-organic framework compounds. Compound 1 was used as a heterogeneous catalyst to catalyze the oxidation of iodine ions by H2O2 at a temperature of 55℃, and the study showed that the variation of iodine generation by compound 1 was 6.11×10-7 mol·L-1·s-1, and the conversion rate could still reach as high as 99.6% when it was reused six times. |
| Keywords: polyoxometalates metal-organic framework crystal structure catalytic performance |
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| QIU Shuang-Yan,GUO Jun,ZHANG Dan,LU Lin,ZHANG Yi-Ju,ZHANG Tai-Wen.POMOF based on H3PW12O40·xH2O and 3,5-diamino-1,2,4-triazole: Synthesis, characterization, and catalytic oxidation performance for iodine ion[J].Chinese Journal of Inorganic Chemistry,2023,39(11):2113-2120. |
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