Four series of meso-tetra (4- n-noyloxyphenyl) porphyrins Zn2+ (4 kinds) have been synthesized. The structures of compounds were characterized by elemental analysis, UV-Vis, FTIR photoacoustic spectrum, 1H NMR and MS....Four series of meso-tetra (4- n-noyloxyphenyl) porphyrins Zn2+ (4 kinds) have been synthesized. The structures of compounds were characterized by elemental analysis, UV-Vis, FTIR photoacoustic spectrum, 1H NMR and MS. The domains of stability and the structure of the liquid crystalline phases were determined by optical microscopy, differential scanning calorimetry (DSC). According to the DSC thermogram of compounds, compound(3) exhibits lower phase transition temperature at - 36℃ and a wide mesophase range in 175℃.展开更多
As one of the highly effective methods to prepare catalysts for photocatalytic reduction of CO2 into valueadded chemicals,using metalloporphyrin as light-harvesting mixed ligand to modify metal-organic framework(MOF)i...As one of the highly effective methods to prepare catalysts for photocatalytic reduction of CO2 into valueadded chemicals,using metalloporphyrin as light-harvesting mixed ligand to modify metal-organic framework(MOF)is very valuable since it can greatly improve the prophyrin dispersibility and consequently inhibit its potential agglomeration.Herein,we employed a one-pot synthetic strategy to chemically immobilize Cu(II)tetra(4-carboxylphenyl)porphyrin(CuTCPP)into UiO-66 MOF structure through coordination mode.Meanwhile,in-situ growth of TiO2 nanoparticles onto the MOF is actualized with the generation of CuTCPP c UiO-66/TiO2(CTU/TiO2)composites.Under Xe lamp irradiation(λ>300 nm),the catalytic result presents that an optimal value of 31.32 μmol g^-1 h^-1 CO evolution amount,about 7 times higher than that of pure TiO2 was obtained through the photocatalysis.It is supposed owning to a consistent augment of light absorption derived from chemically implanted porphyrin derivative,which is simultaneously functioning with an efficacious separation of photo-induced carries given by the newly engendered composites between MOF and TiO2,an effective catalytic activity and approving recyclability of CTU/TiO2 can be achieved in the photocatalytic reduction of CO2 into CO.展开更多
文摘Four series of meso-tetra (4- n-noyloxyphenyl) porphyrins Zn2+ (4 kinds) have been synthesized. The structures of compounds were characterized by elemental analysis, UV-Vis, FTIR photoacoustic spectrum, 1H NMR and MS. The domains of stability and the structure of the liquid crystalline phases were determined by optical microscopy, differential scanning calorimetry (DSC). According to the DSC thermogram of compounds, compound(3) exhibits lower phase transition temperature at - 36℃ and a wide mesophase range in 175℃.
基金financially supported by the National Natural Science Foundation of China (21663027, 21808189)the Science and Technology Support Project of Gansu Province (1504GKCA027)
文摘As one of the highly effective methods to prepare catalysts for photocatalytic reduction of CO2 into valueadded chemicals,using metalloporphyrin as light-harvesting mixed ligand to modify metal-organic framework(MOF)is very valuable since it can greatly improve the prophyrin dispersibility and consequently inhibit its potential agglomeration.Herein,we employed a one-pot synthetic strategy to chemically immobilize Cu(II)tetra(4-carboxylphenyl)porphyrin(CuTCPP)into UiO-66 MOF structure through coordination mode.Meanwhile,in-situ growth of TiO2 nanoparticles onto the MOF is actualized with the generation of CuTCPP c UiO-66/TiO2(CTU/TiO2)composites.Under Xe lamp irradiation(λ>300 nm),the catalytic result presents that an optimal value of 31.32 μmol g^-1 h^-1 CO evolution amount,about 7 times higher than that of pure TiO2 was obtained through the photocatalysis.It is supposed owning to a consistent augment of light absorption derived from chemically implanted porphyrin derivative,which is simultaneously functioning with an efficacious separation of photo-induced carries given by the newly engendered composites between MOF and TiO2,an effective catalytic activity and approving recyclability of CTU/TiO2 can be achieved in the photocatalytic reduction of CO2 into CO.
