非晶有机锆聚合物的制备及光催化CO2合成甲醇
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TQ630

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Preparation of amorphous organozirconium polymer and photocatalytic synthesis of methanol from CO2
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    摘要:

    采用溶剂热法在增透的多孔玻璃表面制备负载非晶态有机锆聚合物。通过SEM,XRD,BET,FTIR,UV-Vis,ICP,有机元素分析,荧光光谱(PL)及紫外光电子能谱(UPS )等手段对催化剂进行了测试分析。非晶态有机锆聚合物(2.64 eV)具有比NH2-UiO-66(Zr)(2.74 eV)更窄的禁带宽度,更稳定的光生电子。在光催化反应器中放入2片负载非晶态有机锆的玻璃(总面积50.4 cm2),在300 W的氙灯照射下催化还原CO2合成甲醇,反应4 h后甲醇的产量为443.0 μmol,转换频率(TOF)为8.9 h-1。当0.1 g NH2-UiO-66(Zr)为催化剂时,甲醇的产量为244.3 μmol,TOF仅为0.17 h-1。非晶有机锆聚合物的光催化性能明显优于NH2-UiO-66(Zr)粉末,且循环稳定性良好。

    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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赵远,贺建雄,姜宏,熊春荣.非晶有机锆聚合物的制备及光催化CO2合成甲醇[J].精细化工,2020,37(6):

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  • 收稿日期:2020-04-06
  • 最后修改日期:2020-04-26
  • 录用日期:2020-04-28
  • 在线发布日期: 2020-06-08
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