1 Methylimidazole

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Pengyi Yang - One of the best experts on this subject based on the ideXlab platform.

  • selective photodegradation of 1 Methylimidazole 2 thiol by the magnetic and dual conductive imprinted photocatalysts based on tio2 fe3o4 mwcnts
    Chemical Engineering Journal, 2014
    Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi Yang
    Abstract:

    Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.

  • Selective photodegradation of 1-Methylimidazole-2-thiol by the magnetic and dual conductive imprinted photocatalysts based on TiO2/Fe3O4/MWCNTs
    Chemical Engineering Journal, 2014
    Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi Yang
    Abstract:

    Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.

Shigekazu Yamazaki - One of the best experts on this subject based on the ideXlab platform.

Wenxia Tang - One of the best experts on this subject based on the ideXlab platform.

  • Binding of 1-Methylimidazole to cytochrome c: kinetic analysis and resonance assignments by two-dimensional NMR
    Biochimica et biophysica acta, 1995
    Co-Authors: Weiping Shao, Gaohua Liu, Wenxia Tang
    Abstract:

    The binding of 1-Methylimidazole to the heme iron by displacing Met-80 of cytochrome c has been studied by two-dimensional (2D) exchange spectroscopy. Two components of cytochrome c ligated by 1-Methylimidazole (1-MeIm-cyt c) are first identified, which are related to the sterically hindered orientation of 1-Methylimidazole by the heme pocket. Based on a matrix formalism, the kinetic parameters are calculated from the 2D peak amplitudes. With the known resonance assignments of cytochrome c, some hyperfine shifted resonances arising from heme peripheral protons and two axial ligands, and some side-chain resonances of the aliphatic and aromatic protons of 1-MeIm-cyt c have been straightforwardly assigned, which provide a clue to ligand-induced electronic and molecular structural changes of the protein.

  • 1H NMR studies of 1-Methylimidazole complex of cytochrome c
    Journal of Inorganic Biochemistry, 1995
    Co-Authors: Weiping Shao, Gaohua Liu, Wenxia Tang
    Abstract:

    Abstract Some hyperfine shifted 1 H resonances of 1-Methylimidazole complex of horse ferricytochrome c (1-MeIm·cyt c ) have been assigned for the first time using 1D saturation transfer and 2D EXSY exchange correlated spectroscopy) experiments. Kinetic and equilibrium data for 1-MeIm binding to cyt c at a temperature range of 303–319 K have been determined at pH 7.0 by using the NMR method. The observed thermodynamic parameters for 1-MeIm binding are Δ H° = 39.5 kJ·mol −1 , Δ S° = 154 J·mol −1 ·K −1 , and Ea = 142 kJ·mol −1 . The source of the asymmetric spin density distribution in heme groups of 1-MeIm·cyt c and the reason of low affinity of cytochrome c for 1-MeIm are also discussed.

Ai-ping Jin - One of the best experts on this subject based on the ideXlab platform.

Yingying Luo - One of the best experts on this subject based on the ideXlab platform.

  • selective photodegradation of 1 Methylimidazole 2 thiol by the magnetic and dual conductive imprinted photocatalysts based on tio2 fe3o4 mwcnts
    Chemical Engineering Journal, 2014
    Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi Yang
    Abstract:

    Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.

  • Selective photodegradation of 1-Methylimidazole-2-thiol by the magnetic and dual conductive imprinted photocatalysts based on TiO2/Fe3O4/MWCNTs
    Chemical Engineering Journal, 2014
    Co-Authors: Yingying Luo, Yinhua Jiang, Dandan Wang, Lili Yang, Pengwei Huo, Xuliang Bai, Xulan Xie, Pengyi Yang
    Abstract:

    Abstract The magnetic and dual conductive imprinted photocatalysts (MCIPs) were synthesized through the suspension polymerization method. TiO 2 /Fe 3 O 4 /MWCNTs, 1-Methylimidazole-2-thiol and pyrrole were used as supports, template molecule and functional monomer, respectively. The MCIPs were further characterized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscope (TEM), UV–visible diffuse reflectance spectra (UV–vis DRS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). The result revealed that polypyrrole (PPy) was formed and well embedded in the surface imprinted layer of TiO 2 /Fe 3 O 4 /MWCNTs. Owing to PPy and MWCNTs, the MCIPs was equipped with dual conductivity which was particularly useful for photodegradation of 1-Methylimidazole-2-thiol in aqueous solution under ultraviolet irradiation. Through a series investigation of factors, it was obvious that when the polymerization time was 24 h and the adding dose of pyrrole was 8 mmol, the resulting MCIPs obtained the highest photocatalytic ability. In addition, the photodegradation process obeyed the pseudo-first-order kinetic reaction and exhibited an excellent selective degradation ability of 1-Methylimidazole-2-thiol. The degradation intermediate products and mechanism of 1-Methylimidazole-2-thiol were further discussed.