为拓宽铜-有机框架材料(Cu-BTC)在吸附、光催化和抗菌领域的应用,室温下将羊毛在(Zn,Cu)羟基双盐与聚乙烯吡咯烷酮(PVP)的混合溶液和均苯三甲酸(BTC)溶液中进行层层组装,制备了PVP/Cu-BTC/羊毛复合材料。采用傅里叶红外光谱、扫描电镜、能谱、X射线衍射和紫外-可见漫反射光谱等多种表征方法,证明了PVP/Cu-BTC/羊毛复合材料的化学组分、晶体结构和形貌。测试了不同组装次数的复合材料对Cr(Ⅵ)的液相吸附和光催化性能以及抗菌性能。结果表明:羊毛和3-PVP/Cu-BTC/羊毛复合材料对Cr(Ⅵ)的吸附在30min达到吸附平衡,去除率分别为8.3%和73.6%;在1000W氙灯光照条件下催化60min后,3-PVP/Cu-BTC/羊毛复合材料对Cr(Ⅵ)的去除率达99.9%,而羊毛对Cr(Ⅵ)无光催化去除效果。3-PVP/Cu-BTC/羊毛复合材料对大肠杆菌和金黄色葡萄球菌的抑菌率分别为99.6%和99.3%。
In order to broaden the application of copper-organic framework materials (Cu-BTC) in the fields of adsorption,photocatalysis and antibacterial,PVP/Cu-BTC/wool composites were prepared with layer-by-layer assembly of wool in the mixed solution of (Zn,Cu) hydroxybissalt with polyethylene pyrrolidone (PVP) and 1,3,5-benzenetricarboxylic acid (BTC) solution at room temperature.The chemical composition,crystal structure and morphology of the PVP/Cu-BTC/wool composites were proved by Fourier transform infrared spectroscopy,scanning electron microscopy,energy dispersive spectroscopy,X-ray diffraction and UV-Vis absorption spectra.The liquid-phase adsorption and photocatalytic properties for Cr(Ⅵ) and antibacterial properties of the composites assembled with different numbers of assembly times were tested.The results showed that the adsorption equilibrium of Cr(Ⅵ) on wool and 3-PVP/Cu-BTC/wool composite reached within 30 minutes,and the removal rates were 8.3% and 73.6%,respectively.After 60 minutes of photocatalysis under 1000W xenon light,the removal rate of Cr(Ⅵ) by 3-PVP/Cu-BTC/wool composite was 99.9%,while wool had no photocatalytic removal effect of Cr(Ⅵ).The antibacterial rates of 3-PVP/Cu-BTC/wool composite against Escherichia coli and Staphylococcus aureus were 99.6% and 99.3%,respectively.
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基金资助
江苏省产学研合作项目(BY2020089);南通大学大学生创新训练计划项目(2024342)
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