Preparation of photocatalytic regenerationable activated carbon （AC） is the key step for the practical application of in situ regeneration of exhausted AC. A novel photocatalytic regenerationable AC was prepared by ...Preparation of photocatalytic regenerationable activated carbon （AC） is the key step for the practical application of in situ regeneration of exhausted AC. A novel photocatalytic regenerationable AC was prepared by sol-gel TiO2 in this work. The adsorption and regeneration performance of TiO2/AC were evaluated using phenol as model compound. Scanning electron microscope （SEM） and nitrogen （77 K） adsorption isotherm were used to determine the surface area, pore structure and the distribution of TiO2. The results showed that with the increase of TiO2 loading, adsorption capacity of TiO2/AC decreased and the regeneration efficiency increased. The photocatalytic regenerationable AC with suitable TiO2 loading （2 wt%） exhibited suitable adsorption capacity and regeneration efficiency. TiO2 located mainly in the entrance of macro-pore of carbon. The prepared TiO2/AC exhibited similar surface structure and pore structure with material carbon.展开更多
A derivative of Brevianamide F,（3 S,8 a R）-3-（（1-allyl-1 H-3-indolyl）methyl）-hexahy-dropyrrolo[1,2-a]pyrazine-1,4-dione, was synthesized and characterized by 1 H NMR, 13 C NMR and confirmed by X-ray crystal stru...A derivative of Brevianamide F,（3 S,8 a R）-3-（（1-allyl-1 H-3-indolyl）methyl）-hexahy-dropyrrolo[1,2-a]pyrazine-1,4-dione, was synthesized and characterized by 1 H NMR, 13 C NMR and confirmed by X-ray crystal structure analysis. This compound crystallizes in orthorhombic system, space group P212121 with a = 9.59590（10）, b = 12.70430（10）, c = 14.5425（2） ?, V = 1772.86（3） ?3, Z = 4, μ（CuK α） = 0.712 mm-1, Dc = 1.279 g/cm3, 16019 reflections measured（9.24 o≤2θ≤147.28°）, 3524 unique（Rint = 0.0309, Rsigma = 0.0175） which were used in all calculations. The final R = 0.0567（I > 2σ（I）） and w R = 0.1411（all data）. The structure exhibits intermolecular hydrogen bonds typed O–H…O, leading to the formation of one-dimensional chains. The title compound was tested for inhibitory activity toward B-16, C6, RM-1 and BV-2 cancer cell lines.展开更多
基金The National Natural Science Foundation of China (No. 30400339) and the Heilongjiang Province Natural Science Foundation(No.C2004-29)
文摘Preparation of photocatalytic regenerationable activated carbon （AC） is the key step for the practical application of in situ regeneration of exhausted AC. A novel photocatalytic regenerationable AC was prepared by sol-gel TiO2 in this work. The adsorption and regeneration performance of TiO2/AC were evaluated using phenol as model compound. Scanning electron microscope （SEM） and nitrogen （77 K） adsorption isotherm were used to determine the surface area, pore structure and the distribution of TiO2. The results showed that with the increase of TiO2 loading, adsorption capacity of TiO2/AC decreased and the regeneration efficiency increased. The photocatalytic regenerationable AC with suitable TiO2 loading （2 wt%） exhibited suitable adsorption capacity and regeneration efficiency. TiO2 located mainly in the entrance of macro-pore of carbon. The prepared TiO2/AC exhibited similar surface structure and pore structure with material carbon.
基金financially sponsored by the Natural Science Foundation of Hebei Province(No.B2015208134)
文摘A derivative of Brevianamide F,（3 S,8 a R）-3-（（1-allyl-1 H-3-indolyl）methyl）-hexahy-dropyrrolo[1,2-a]pyrazine-1,4-dione, was synthesized and characterized by 1 H NMR, 13 C NMR and confirmed by X-ray crystal structure analysis. This compound crystallizes in orthorhombic system, space group P212121 with a = 9.59590（10）, b = 12.70430（10）, c = 14.5425（2） ?, V = 1772.86（3） ?3, Z = 4, μ（CuK α） = 0.712 mm-1, Dc = 1.279 g/cm3, 16019 reflections measured（9.24 o≤2θ≤147.28°）, 3524 unique（Rint = 0.0309, Rsigma = 0.0175） which were used in all calculations. The final R = 0.0567（I > 2σ（I）） and w R = 0.1411（all data）. The structure exhibits intermolecular hydrogen bonds typed O–H…O, leading to the formation of one-dimensional chains. The title compound was tested for inhibitory activity toward B-16, C6, RM-1 and BV-2 cancer cell lines.
