Abstract

A porphyrinic mesoporous metal–organic framework (PCN-222(M) (M = Mn, Fe, Cu)) has been synthesized by a simple sonochemical preparation method without high temperature in a short period of time. The ultrasonic method for the preparation of PCN-222(M) was found to be an efficient procedure with a good quantitative yield (PCN-222(M)-U). Harmful cationic and anionic dyes have been removed from wastewater using PCN-222(M). The comparative study of the influences of metalloporphyrin and non-metal porphyrin frameworks (PCN-222) on the adsorption process has been performed. Remarkably high adsorption capacity over PCN-222(M) for the anionic dyes is reported. The porphyrinic metal center of frameworks and pH values affected dye adsorption capacity, indicating the effective role of electrostatic interactions on dye adsorption. Due to the aggregation of MB and MO, a significant increase in the adsorption capacity was observed in a mixture of MB-MO solution at pH 7. High adsorption capacity over PCN-222(M) has been estimated using Langmuir and Freundlich equations. The adsorption kinetics, thermodynamic parameters, stability and reusability of adsorbents have also been reported. The stability of PCN-222(M) in water over three months was investigated (PCN-222(M)-3).

Graphic Abstract

中文翻译：

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超声合成锆基卟啉MOF，增强对阴离子和混合染料溶液的吸附性能

摘要

卟啉介孔金属-有机骨架（PCN-222（M）（M = Mn，Fe，Cu））是通过简单的声化学制备方法合成的，并且在短时间内不需高温。超声法制备PCN-222（M）是一种有效的方法，定量收率很好（PCN-222（M）-U）。使用PCN-222（M）从废水中去除了有害的阳离子和阴离子染料。进行了金属卟啉和非金属卟啉骨架（PCN-222）对吸附过程影响的比较研究。据报道，阴离子染料在PCN-222（M）上具有极高的吸附能力。骨架的卟啉金属中心和pH值影响染料的吸附能力，表明静电相互作用对染料的吸附具有有效作用。由于MB和MO的聚集，在pH值为7的MB-MO溶液混合物中观察到了吸附容量的显着增加。已使用Langmuir和Freundlich方程估算出PCN-222（M）的高吸附容量。还已经报道了吸附剂的吸附动力学，热力学参数，稳定性和可重复使用性。研究了PCN-222（M）在水中三个月内的稳定性（PCN-222（M）-3）。

图形摘要