Preparation of amorphous organozirconium polymer and photocatalytic synthesis of methanol from CO2
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TQ630

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    Abstract:

    Glass slide immobilized amorphous organozirconium polymer was fabricated by a solvent heating method. SEM, XRD, BET, IR, UV-Vis, ICP, organic element analysis, PL and UPS were used to characterize the catalysts. The band gap of the immobilized amorphous organozirconium polymer was narrowed to 2.64 eV. Comparatively, it was 2.74 eV for NH2-UiO-66(Zr). Additionally, the amorphous organozirconium exhibited more effective separation of the photogenerated electrons. In a photocatalytic reactor, two pieces of glass slides loaded with amorphous organozirconium were glued together with a total area of 50.4 cm2. Photocatalytic reduction of CO2 was illuminated under a 300 W Xe lamp. The yield of methanol was 443.0 μmol for 4 hours of reaction duration, and the corresponding turnover frequency (TOF) was 8.9 h-1.When 0.1 g of NH2-UiO-66(Zr) was used as catalyst, the yield of methanol was 244.3 μmol, and the TOF was only 0.17 h-1. Therefore, the photocatalytic performance of amorphous organozirconium polymer is obviously better than NH2-UiO-66(Zr) powder. And the catalyst showed good stability in cyclic experiment.

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History
  • Received:April 06,2020
  • Revised:April 26,2020
  • Adopted:April 28,2020
  • Online: June 08,2020
  • Published:
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