Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4...Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)(TeMo_(6)O_(24))}·4H_(2)O(2),were synthesized in one-pot under hydrothermal conditions.The compounds 1 and 2 have been tested by IR spectra,elemental analyses and single-crystal X-ray diffraction.Compound 1 contains one discrete Anderson anion,one Lindqvist anion and three 4,4'-bipy organic ligands.The anions and 4,4'-bipy alternate with each other by hydrogen bonding,building a supramolecular 1D chain.Adjacent 1D chains are interlinked through hydrogen bonding interactions to further connect a supramolecular 2D layer.Compounds containing both Anderson and Lindqvist polyanions are not common in the crystal structure of POMs.Compound 2 contains one Anderson anion and two metal-organic subunits{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)as modifiers.The Anderson anions and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)subunits are organized into alternating through hydrogen bonding interactions to construct a supramolecular 1D chain.Additionally,the electrochemical properties of compounds 1 and 2 as well as photocatalytic properties are investigated.Results show that compounds 1 and 2 have photocatalytic activity,which can photocatalyze the degradation of organic dyes MB and AF.Also,compounds 1 and 2 have good electrochemical properties for amperometric detection of NO2-and Cr(Ⅵ).Furthermore,Compound 2 can be used as materials of supercapacitor.展开更多
Ce-TiO_(2)nanowires were prepared by hydrothermal method with cerium nitrate as the doping source.The products were characterized and analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transf...Ce-TiO_(2)nanowires were prepared by hydrothermal method with cerium nitrate as the doping source.The products were characterized and analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transformation infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(UV-Vis DRS)and electrochemical impedance spectroscopy(EIS).The effects of Ce doping amount on morphology,phase structure,photocatalytic activity,and degradation process of TiO_(2)nanowires were further evaluated.When the Ce doping amount in TiO_(2)was about 4%(mass fraction),the photocatalytic degradation rate of Ce-TiO_(2)nanowires on methylene blue under UV light reached 90.5%.展开更多
基金supported by the National Natural Science Foundation of China(21571023)
文摘Using symmetrical rigid organic ligand 4,4'-dipyridy(4,4'-bipy),two new Anderson-based supramolecular compounds,namely,[H_(2)(4,4'-bipy)]_(3)·(TeMo_(6)O_(24))·(H_(2)Mo_(6)O_(19))(1)and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)(TeMo_(6)O_(24))}·4H_(2)O(2),were synthesized in one-pot under hydrothermal conditions.The compounds 1 and 2 have been tested by IR spectra,elemental analyses and single-crystal X-ray diffraction.Compound 1 contains one discrete Anderson anion,one Lindqvist anion and three 4,4'-bipy organic ligands.The anions and 4,4'-bipy alternate with each other by hydrogen bonding,building a supramolecular 1D chain.Adjacent 1D chains are interlinked through hydrogen bonding interactions to further connect a supramolecular 2D layer.Compounds containing both Anderson and Lindqvist polyanions are not common in the crystal structure of POMs.Compound 2 contains one Anderson anion and two metal-organic subunits{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)as modifiers.The Anderson anions and{Cu_(2)[H(4,4'-bipy)]_(2)(H_(2)O)_(6)}^(6+)subunits are organized into alternating through hydrogen bonding interactions to construct a supramolecular 1D chain.Additionally,the electrochemical properties of compounds 1 and 2 as well as photocatalytic properties are investigated.Results show that compounds 1 and 2 have photocatalytic activity,which can photocatalyze the degradation of organic dyes MB and AF.Also,compounds 1 and 2 have good electrochemical properties for amperometric detection of NO2-and Cr(Ⅵ).Furthermore,Compound 2 can be used as materials of supercapacitor.
基金funded by Liaoning Provincial Education Department Key Research Project(LJKZZ20220117)National Natural Science Foundation of China(21878024)the Liaoning Petrochemical University and Chemical Technology Research Start-up Fund(2023XJJL-005).
文摘Ce-TiO_(2)nanowires were prepared by hydrothermal method with cerium nitrate as the doping source.The products were characterized and analyzed by scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transformation infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(UV-Vis DRS)and electrochemical impedance spectroscopy(EIS).The effects of Ce doping amount on morphology,phase structure,photocatalytic activity,and degradation process of TiO_(2)nanowires were further evaluated.When the Ce doping amount in TiO_(2)was about 4%(mass fraction),the photocatalytic degradation rate of Ce-TiO_(2)nanowires on methylene blue under UV light reached 90.5%.
