琼脂/GO/氧化锌纳米粒子复合材料的合成与表征及其在去除食品工业废水中亚甲基蓝和甲基橙偶氮染料方面的应用。
Synthesis and characterization Agar/GO/ZnO NPs nanocomposite for removal of methylene blue and methyl orange as azo dyes from food industrial effluents.
机构信息
Department of Chemistry, Faculty of Science, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran.
Department of Chemistry, Faculty of Science, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran.
出版信息
Food Chem Toxicol. 2022 Nov;169:113412. doi: 10.1016/j.fct.2022.113412. Epub 2022 Sep 8.
Herein, with using graphene oxide (GO), agar and ZnO NPs was synthesized as nanocomposite to removal of dyes contaminants from food industry effluents. Synthesis and characterization of the nanocomposite adsorbent were carried out by FTIR, XRD, FE-SEM, TEM, EDX and DLS analyses. The effects of various parameters such as pH, initial dye concentration, contact time and temperature on the removal of methylene blue (MB) and methyl orange (MO) as azo dyes were investigated. The used nanocomposite can be effective in the adsorption of dyes due to their different functional groups. The Freundlich and Langmuir models were used to investigate the isotherm of contaminants removal. The results showed that the removal of methylene blue and methyl orange dyes followed the Freundlich isotherm, and the values of the R correlation coefficient for agar/GO, and agar/GO/ZnO nanocomposites for MB dye was 0.9640 and 0.9977, respectively, and for dye MO, 0.9918 and 0.9683, respectively. The maximum removal percentages for MB and MO dyes were 88% and 91%, respectively.
本文使用氧化石墨烯（GO）、琼脂和 ZnO NPs 合成了纳米复合材料，用于去除食品工业废水中的染料污染物。通过 FTIR、XRD、FE-SEM、TEM、EDX 和 DLS 分析对纳米复合材料吸附剂的合成和表征进行了研究。考察了 pH 值、初始染料浓度、接触时间和温度等各种参数对亚甲基蓝（MB）和甲基橙（MO）作为偶氮染料去除的影响。由于具有不同的官能团，所使用的纳米复合材料可以有效地吸附染料。采用 Freundlich 和 Langmuir 模型研究了污染物去除的等温线。结果表明，亚甲基蓝和甲基橙染料的去除遵循 Freundlich 等温线，对于 MB 染料，琼脂/GO 和琼脂/GO/ZnO 纳米复合材料的 R 相关系数分别为 0.9640 和 0.9977，对于染料 MO，分别为 0.9918 和 0.9683。MB 和 MO 染料的最大去除率分别为 88%和 91%。
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