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首页> 外文期刊>RSC Advances >Porous metalloporphyrinic nanospheres constructed from metal 5,10,15,20-tetraksi(4′-ethynylphenyl)porphyrin for efficient catalytic degradation of organic dyes
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Porous metalloporphyrinic nanospheres constructed from metal 5,10,15,20-tetraksi(4′-ethynylphenyl)porphyrin for efficient catalytic degradation of organic dyes

机译：由金属5,10,15,20-四（4'-乙炔基苯基）卟啉金属构成的多孔金属卟啉纳米球，可有效催化降解有机染料

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摘要

Novel conjugated metalloporphyrin polymers (PP-EPMn and PX-EPMn) were synthesized by the Sonogashira coupling reaction with Mn( III )5,10,15,20-tetraksi(4′-ethynylphenyl)porphyrin ([p-ethynyl] _(4) PMn) as building block, and with phenylene and xenyl groups as bridges, respectively. Fine nanospheres were obtained through control of the reaction conditions. The two polymer nanospheres were characterized in detailed by BET, FE-SEM, HR-TEM, FT-IR, UV-Vis and XPS, revealing that they were highly ordered, highly developed microporous and super-conjugated metalloporphyrin polymers with large surface areas and uniform pore sizes. Their electrochemical behaviors and hydrophilicity were also investigated. With the synergistic effects of porous nanosphere structure and conjugated covalent structure, PP-EPMn and PX-EPMn showed excellent catalytic activity and reusability in the catalytic degradation of methylene blue (3,7-bis(dimethylamino)-5-phenothiazinium chloride) in aqueous solution. The good hydrophilicity of the polymer nanospheres promoted the catalytic degradation. In particular, unlike Fenton degradation systems that require acidic conditions, PP-EPMn degraded methylene blue significantly better under alkaline conditions, which implied a good prospect in treating industrial methylene blue dye wastewater.
机译：通过Sonogashira偶联反应与Mn（III）5,10,15,20-四（4'-乙炔基苯基）卟啉（[p-乙炔基] _（4 ）PMn）作为结构单元，分别以亚苯基和二甲苯基为桥。通过控制反应条件获得了精细的纳米球。通过BET，FE-SEM，HR-TEM，FT-IR，UV-Vis和XPS对这两种聚合物纳米球进行了详细表征，表明它们是高度有序，高度发达的微孔和超共轭金属卟啉聚合物，具有较大的表面积和均匀的孔径。还研究了它们的电化学行为和亲水性。借助多孔纳米球结构和共轭共价结构的协同作用，PP-EPMn和PX-EPMn在水溶液中亚甲基蓝（3,7-双（二甲基氨基）-5-吩噻嗪鎓氯化物）的催化降解中显示出优异的催化活性和可重复使用性。解。聚合物纳米球的良好亲水性促进了催化降解。特别是，与要求酸性条件的Fenton降解系统不同，PP-EPMn在碱性条件下能更好地降解亚甲基蓝，这在处理工业亚甲基蓝染料废水方面具有良好的前景。

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