葛梦圆, 刘真真, 狄伟轩, 王娇, 王新全, 丁伟, 齐沛沛. 三维Al-TCPP MOF纳米片对16种三唑类杀菌剂的吸附去除研究[J]. 农药学学报, 2024, 26(2): 380-389. DOI: 10.16801/j.issn.1008-7303.2024.0018
    引用本文: 葛梦圆, 刘真真, 狄伟轩, 王娇, 王新全, 丁伟, 齐沛沛. 三维Al-TCPP MOF纳米片对16种三唑类杀菌剂的吸附去除研究[J]. 农药学学报, 2024, 26(2): 380-389. DOI: 10.16801/j.issn.1008-7303.2024.0018
    GE Mengyuan, LIU Zhenzhen, DI Weixuan, WANG Jiao, WANG Xinquan, DING Wei, QI Peipei. Adsorption and removal of 16 triazole fungicides by three-dimensional Al-TCPP MOF nanosheets[J]. Chinese Journal of Pesticide Science, 2024, 26(2): 380-389. DOI: 10.16801/j.issn.1008-7303.2024.0018
    Citation: GE Mengyuan, LIU Zhenzhen, DI Weixuan, WANG Jiao, WANG Xinquan, DING Wei, QI Peipei. Adsorption and removal of 16 triazole fungicides by three-dimensional Al-TCPP MOF nanosheets[J]. Chinese Journal of Pesticide Science, 2024, 26(2): 380-389. DOI: 10.16801/j.issn.1008-7303.2024.0018

    三维Al-TCPP MOF纳米片对16种三唑类杀菌剂的吸附去除研究

    Adsorption and removal of 16 triazole fungicides by three-dimensional Al-TCPP MOF nanosheets

    • 摘要: 农业生产中大量使用的三唑类杀菌剂最终通过环境介质传递进入水体,给生态系统和人类健康造成威胁。因此,本研究以六水合氯化铝和四(4-羧基苯基)卟啉 (tetra (4- carboxyphenyl) porphyrin,TCPP) 为功能单体制备三维Al-TCPP金属有机框架(metal organic framework,MOF)纳米片,并以Al-TCPP纳米片为吸附剂,构建了水体中16种三唑类杀菌剂的高效吸附去除方法。探究了Al-TCPP纳米片用量、吸附时间和pH值等对其吸附三唑类杀菌剂吸附能力的影响,并获得最佳吸附去除条件;选取3种典型杀菌剂,研究了Al-TCPP纳米片对目标物的吸附动力学、吸附等温线和吸附热力学等吸附行为机制。结果表明:Al-TCPP纳米片对三唑类杀菌剂的吸附过程符合准二级动力学模型,为单分子层化学吸附,且吸附过程是自发的放热反应,低温有利于该反应进行。采用本方法吸附不同环境水体中的三唑类杀菌剂,结果表明:Al-TCPP纳米片对不同环境水体中的16种三唑类杀菌剂的去除率均达到85%以上。综上所述,Al-TCPP纳米片对三唑类杀菌剂的吸附去除具有较好的实用性,可为环境水体中三唑类杀菌剂残留去除研究提供新的思路和方法。

       

      Abstract: Triazole fungicides are widely used in agricultural production, and the residues could transmit into water bodies through environmental media, posing a threat to the ecosystem and human health. In this study, aluminum chloride hexahydrate and tetra (4- carboxyphenyl) porphyrin (TCPP) were used as functional monomers to prepare three-dimensional Al-TCPP metal organic framework (MOF) nanosheets, and Al-TCPP nanosheets were used as adsorbents to construct an efficient adsorption and removal method for 16 triazole fungicides in water. The effects of Al-TCPP nanosheets dosage, adsorption time and pH value on the adsorption performance of triazole fungicides were investigated, and the best adsorption removal conditions were obtained. Three typical fungicides were selected to study the adsorption kinetics, adsorption isotherm and adsorption thermodynamics of Al-TCPP nanosheets. The results showed that the adsorption of triazole fungicides by Al-TCPP nanosheets was a monolayer chemical adsorption, which conformed to the quasi-second-order kinetic model. The adsorption process was spontaneous exothermic reaction, and low temperature was beneficial to the reaction. The established method was used to adsorb triazole fungicides in different environmental water samples, and the results showed that the removal rates of Al-TCPP nanosheets for 16 triazole fungicides in different environmental water samples were all higher than 85%. In summary, Al-TCPP nanosheets have good practicability for the adsorption and removal of triazole fungicides, which can provide new idea and novel methods for the study of residue removal of triazole fungicides in environmental water.

       

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