首页|1344吡啶羧酸配体构筑的Cu(Ⅱ)-MOFs及其染料吸附降解性能

1344吡啶羧酸配体构筑的Cu(Ⅱ)-MOFs及其染料吸附降解性能

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  • 国家科技期刊平台
  • NETL
  • NSTL
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  • 维普
为探究不同反应条件对MOFs微观结构和宏观性能的影响,在不同反应条件下,以硫酸铜(CuSO4·5H2O)和6-(吡啶-3'-基)间苯二甲酸(H2L)为材料,制备了2种金属有机框架材料(MOFs){[Cu2(L)2·C2H3N]}n(1)和{[Cu(HL)2]}n(2),并对合成的金属有机框架材料1和2进行了结构分析、TGA和FTIR表征以及对染料的吸附性能研究.单晶衍射数据分析表明:配合物1和2都属单斜晶系,P21/c空间群.配合物1是一种基于双核轮桨次级构筑单元[Cu2(COO)4]构筑的三维紧密堆积化合物,配合物2由于配体部分质子化,结构中存在氢键[O3—H…O4],将二维层状网络结构连接成三维结构.配合物1是rtl拓扑类型的网络结构,拓扑符号为(42.610.83);配合物2是sql拓扑类型的网络结构,拓扑符号为(44.62).2种配合物在相同时间间隔下对不同染料降解性能表明配合物2对水溶液中的孔雀石绿具有一定的化学吸附降解能力.
Dye adsorption and degradation properties of Cu(Ⅱ)-MOFs constructed by rigid pyridine carboxylic acid ligands
In order to investigate the effects of different synthesis conditions on the micro-struc-tures and macro-properties of MOFs,two metal-organic frameworks(MOFs){[Cu2(L)2·C2H3N]}n(1)and{[Cu(HL)2]}n(2)were prepared by using the copper sulfate(CuSO4·5H2O)and 6-(pyridin-3'-yl)isophthalic acid(H2L)as the building units under the different reaction con-ditions.Compound 1 and 2 were fully studied through structure analysis,thermogravimetric a-nalysis(TGA)and FT-IR spectroscopy.Single crystal data reveals that compound 1 and 2 crys-tallize in the monoclinic crystal system with the P21/c space group.Structure analysis indicates that compounds 1 shows a three-dimensional dense packing structure based on the secondary building units dinuclear paddle wheel shaped[Cu2(COO)4](SBUs).Structure analysis reveals that compounds 2 shows a 2D layer structure,which was further connected by the hydrogen bonds[O3—H…O4]to give a 3D network.Topological analysis for compounds 1 and 2 show that 1 can be simplified as a two connect rtl network with the point symbol of(42.610.83),and 2 can be viewed as a unnodol connect sql network with the point symbol of(44.62).In order to study the properties of the compounds 1 and 2 in aqueous solution,three different dyes were used to char-acterize the dye degradation properties of 1 and 2 using ultraviolet/visible spectroscopy(UV)at the same time.The degradation properties of compounds 1 and 2 on different dyes at the same time intervals show that compound 2 shows a certain chemical adsorption and degradation ability for malachite green in aqueous solution.

metal-organic frameworkssecondary building unitsthree-dimensional dense packing structuretwo-dimensional layersdye adsorption and degradation

巫云龙、唐鹏飞、范江、燕阳天

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西安工程大学 材料工程学院,陕西 西安 710048

陕西工业职业技术学院 化工与纺织服装学院,陕西 咸阳 712000

金属有机框架材料 次级构筑单元 三维紧密堆积结构 二维层状 染料吸附降解

陕西省教育厅化生基础科学研究项目咸阳市重点研发计划项目

22JHQ0222021ZDYF-GY-0042

2024

10.13338/j.issn.1674-649x.2024.01.008

西安工程大学学报
西安工程大学

西安工程大学学报

CSTPCD
影响因子：0.473
ISSN：1674-649X
年,卷(期)：2024.38(1)
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