摘要
针对工业染料废水问题,为解决污水中孔雀石绿的有害作用,采用水热法制备成了磁性金属有机骨架材料Fe3O4@Cu3(BTC)2。然后通过对材料做表征测试,包括扫描电子显微镜、透射电子显微镜和FI-IR分析来证明Cu3(BTC)2成功附着在Fe3O4上。利用所制得的Fe3O4@Cu3(BTC)2纳米复合材料作为吸附剂吸附孔雀石绿溶液,在紫外可见分光光度计在固定波长下测定吸附结果。通过控制变量法分别研究了孔雀石绿溶液初始浓度、材料用量、pH值和震荡时间长短对吸附率的影响。然后根据最优值得出最大饱和吸附量来研究吸附性能,结果显示:Fe3O4@Cu3(BTC)2纳米复合材料吸附孔雀石绿的最佳条件为孔雀石绿溶液浓度为30 mg/L,吸附剂用量为7 mg,pH值为7,震荡时间60 min。综合其最佳条件可测得其最大饱和吸附量为53.074 mg/g。Fe3O4@Cu3(BTC)2吸附孔雀石绿的热力学表明吸附在室温下进行即可,吸附动力学表明符合准一级动力学模型。
In order to solve the harmful effect of malachite green in industrial dye wastewater,Fe3O4@Cu3(BTC)2 was prepared by hydrothermal method.Then,the materials were characterized by scanning electron microscopy,transmission electron microscopy and FI-IR analysis to prove that Cu3(BTC)2 was successfully attached to Fe3O4.The prepared Fe3O4@Cu3(BTC)2 Nano-composites were used as adsorbents to adsorb malachite green solution.The adsorption results were measured by UV-Vis spectrophotometer at a fixed wavelength.The effects of initial concentration,material dosage,pH value and shaking time on the adsorption rate of malachite green solution were studied by controlling variable meth od.The results show that the optimal conditions for the adsorption of malachite green by Fe3O4@Cu3(BTC)2 Nano-composites are as follows:the concentration of malachite green solution is 30 mg/L,the amount of adsorbent is 7 mg,the pH is 7,and the shaking time is 60 min.The maximum saturated ad sorption was 53.074 mg/g.The thermodynamics of Fe3O4@Cu3(BTC)2 adsorption on Malachite Green shows that the adsorption can be carried out at room temperature,and the adsorption kinetics shows that it conforms to the quasi first-order kinetics model.
作者
唐祝兴
侯金铭
余孟
TANG Zhuxing;HOU Jinming;YU Meng(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China)
出处
《电镀与精饰》
CAS
北大核心
2020年第9期24-30,共7页
Plating & Finishing
基金
辽宁省教育厅科学研究一般项目(LG201619)。
