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首页> 外文期刊>Advances in Environmental Technology >Magnetite nanoparticles coated with methoxy polyethylene glycol as an efficient adsorbent of diazinon pesticide from water
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Magnetite nanoparticles coated with methoxy polyethylene glycol as an efficient adsorbent of diazinon pesticide from water

机译：磁铁矿纳米颗粒包覆甲氧基聚乙二醇作为水中二嗪农类农药的有效吸附剂

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Methoxy polyethylene glycol modified magnetite nanoparticles (PEGMNs) were synthesized and characterized by scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), and X-ray diffraction (XRD). The adsorption of diazinon onto PEGMNs was investigated by UV-Vis spectrophotometry at 236 nm, through batch experiments. The effects of adsorbent dosage, solution pH, contact time, solution temperature and water impurities on the adsorption of diazinon onto PEGMNs were investigated. The process of adsorption was increased rapidly in the first contact period of 10 min. The adsorption at equilibrium (qe) was found to increase with increasing pH. The results of diazinon removal at various PEGMNs dosages demonstrated that the optimum dose of PEGMNs was 1mg. The amount of adsorption of diazinon at equilibrium increased with an increasing temperature from 15°C to 45°C that indicateds an endothermic process. Therefore, PEGMNs were used as an efficient absorbent for the removal of diazinon.
机译：合成了甲氧基聚乙二醇修饰的磁铁矿纳米颗粒（PEGMNs），并通过扫描电子显微镜（SEM），振动样品磁力计（VSM）和X射线衍射（XRD）对其进行了表征。通过分批实验，通过UV-Vis分光光度法在236nm下研究了二嗪农在PEGMNs上的吸附。研究了吸附剂用量，溶液pH，接触时间，溶液温度和水杂质对二嗪农酮对PEGMNs吸附的影响。在第一个接触时间10分钟内，吸附过程迅速增加。发现在平衡（qe）处的吸附随着pH的增加而增加。在各种PEGMNs剂量下去除二嗪农的结果表明，PEGMNs的最佳剂量为1mg。从15°C到45°C的温度升高，平衡时二嗪农的吸附量增加，这表明吸热过程。因此，PEGMNs被用作去除二嗪农的有效吸收剂。

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