摘要
本文以咪唑衍生物为配体,通过水热合成法与钴离子制备出两个配位聚合物:{[Co(DTA)(1,4-DIB)(H_(2)O)]·H_(2)O}_(n)(1)和[Co(DTA)(1,3-BMIB)]_(n)(2)(1,4-DIB=1,4-二(1H-咪唑-1-基)苯;1,3-BMIB=1,3-二(4-甲基-1H-咪唑-1-基)苯;H_(2)DTA=2,5-二甲氧基对苯二甲酸)。利用X射线单晶衍射、粉末衍射、热失重、元素分析、红外光谱以及固体紫外-可见光谱等对两个配合物进行了表征。结构分析证实配合物1和2是通过二维结构堆积成的三维超分子化合物。粉末衍射测试则显示两个配合物在水中有很好的稳定性。固体紫外-可见光谱显示两个配合物属半导体材料,对紫外-可见光有很强的吸收作用。在光催化实验中,配合物1和2可加快亚甲基蓝的降解速度。
Two cobalt coordination polymers,namely{[Co(DTA)(1,4-DIB)(H_(2)O)]·H_(2)O}_(n)(1)and[Co(DTA)(1,3-BMIB)]_(n)(2)were constructed by 2,5-dimethoxyterephthalic acid(H_(2)DTA),Co(Ⅱ)ions and different imidazole derivatives 1,4-di(1H-imidazol-1-yl)benzene(1,4-DIB)and 1,3-bis(4-methyl-1H-imidazol-1-yl)benzene(1,3-BMIB)under hydrothermal reaction,respectively.Complexes 1 and 2 were characterized by single-crystal X-ray diffraction,powder X-ray diffraction,elemental analysis,thermo-gravimetric analysis and UV-Vis spectra.Single-crystal X-ray diffraction reveals that complexes 1 and 2 are three-dimensional supra molecular frameworks packed by two-dimensional layers.The powder X-ray diffraction confirms that complexes 1 and 2 are stable in water under UV light.The UV-Vis spectra indicate that complexes 1 and 2 are semiconductors with high absorbing ability for UV-Vis light.Photocatalytic tests further confirm the complex 1 and 2 have catalytic activity for the degradation of methylene blue(MB)in water.
作者
石明凤
顾江红
卢森源
徐中轩
SHI Mingfeng;GU Jianghong;LU Senyuan;XU Zhongxuan(School of Chemistry and Chemical Engineering, Zunyi Normal College, Zunyi 563002,China)
出处
《人工晶体学报》
CAS
北大核心
2022年第3期485-492,共8页
Journal of Synthetic Crystals
基金
贵州省大学生创新训练项目(S202010664015)
贵州省自然科学基金(20181181)。
关键词
钴配位聚合物
三维超分子结构
光催化活性
降解
2
5-二甲氧基对苯二甲酸
咪唑衍生物
Co(Ⅱ)-complex
three-dimensional supra-molecular structure
photo-catalytic activity
degradation
2,5-dimethoxyterephthalic acid
imidazole derivative
