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Two novel ligands named 4-styrylpyridine-2,6-dicarboxylic acid (4-SPDA) and 4-(4-(2-(2, 6-dicarboxypyridin-4-yl)- vinyl)styryl)pyridine-2,6-dicarboxylic acid(DSPDA) and their complexes with Tb(Ⅲ) were synthesized and characterized by infrared spectrometry, 1H nuclear magnetic resonance, elemental analysis and gas chromatograph-mass spectrometry. The ligand synthetic route was optimized. The fluorescence properties of the complex in solid state, in different kind of solvents and in solutions with different pH values were investigated in detail. The results show that the yields of DSPDA and 4-SPDA reach over 78% by Wittig-Horner reaction and other eight pyridine-2, 6-dicarboxylic acid derivatives with different substituents on pyridine ring, and their complexes with Tb(Ⅲ) are also obtained. The fluorescence intensities of the complexes with electron-donating groups are more intense than those of the complexes with electron-withdrawing groups on pyridine ring; fluorescence intensities of the complexes are the strongest in neutral solution (pH=7), and the less the dipole moment of solvent molecule is, the stronger the fluorescence intensity is. It is found that the two ligands (4-APDA and DSPDA) are the good sensitizers for Tb(Ⅲ) ion. 相似文献
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顾国梁 《山东建筑工程学院学报》2006,(6)
由于铅及其化合物的有毒性,工业排放废水中的高含铅量严重威胁人类和其他生物的健康,因此人们对含铅废水的处理日益重视。作者综述了近年来国内外含铅废水治理的研究现状,通过比较法阐述了两大处理含铅废水的方法———化学形态改变法和化学形态不变法,同时对它们的作用机理及其在含铅废水中的应用进展进行了概括和归纳。最后,对于两大类方法所存在的缺点和研究方向提出了一点建议和看法,并对新型复合材料治理含铅废水进行了展望。 相似文献
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含铅废水治理的研究进展 总被引:9,自引:0,他引:9
顾国梁 《山东建筑大学学报》2006,21(6):557-561
由于铅及其化合物的有毒性,工业排放废水中的高含铅量严重威胁人类和其他生物的健康,因此人们对含铅废水的处理日益重视。作者综述了近年来国内外含铅废水治理的研究现状,通过比较法阐述了两大处理含铅废水的方法——化学形态改变法和化学形态不变法,同时对它们的作用机理及其在含铅废水中的应用进展进行了概括和归纳。最后,对于两大类方法所存在的缺点和研究方向提出了一点建议和看法,并对新型复合材料治理含铅废水进行了展望。 相似文献
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