...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS Omega >Fabrication of?a GNP/Fe–Mg Binary Oxide Composite for Effective Removal of Arsenic from Aqueous Solution
【24h】

Fabrication of?a GNP/Fe–Mg Binary Oxide Composite for Effective Removal of Arsenic from Aqueous Solution

机译：可有效去除水溶液中砷的GNP / Fe-Mg二元复合氧化物的制备

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Graphene nanoplates (GNPs) can be used as a platform for homogeneous distribution of adsorbent nanoparticles to improve electron exchange and ion transport for heavy-metal adsorption. In this study, we report a facile thermal decomposition route to fabricate a graphene-supported Fe–Mg oxide composite. The prepared composite was characterized?using scanning electron microscopy, transmission electron microscopy, energy-dispersive spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. Batch experiments were carried out to evaluate the arsenic adsorption behavior of the GNP/Fe–Mg oxide composite. Both the Langmuir and Freundlich models were employed to describe the adsorption isotherm, in which the sorption kinetics of the arsenic adsorption process by the composite was found to be pseudo-second-order. Furthermore, the reusability and regeneration of the adsorbent were investigated by an assembled-column filter test. The GNP/Fe–Mg oxide composite exhibited significant fast adsorption of arsenic over a wide range of solution pHs, with exceptional durability and recyclability, which could make this composite a very promising candidate for effective removal of arsenic from aqueous solutions.
机译：石墨烯纳米板（GNP）可用作均匀分布吸附剂纳米颗粒的平台，以改善电子交换和离子传输，以进行重金属吸附。在这项研究中，我们报告了一种容易的热分解途径来制造石墨烯负载的Fe-Mg氧化物复合材料。利用扫描电子显微镜，透射电子显微镜，能量色散光谱，X射线衍射和X射线光电子能谱对制备的复合材料进行了表征。进行批处理实验以评估GNP / Fe-Mg氧化物复合材料的砷吸附行为。 Langmuir模型和Freundlich模型均用于描述吸附等温线，其中复合物对砷的吸附过程的吸附动力学被认为是伪二级。此外，通过组装柱过滤器试验研究了吸附剂的可重复使用性和再生。 GNP / Fe-Mg氧化物复合材料在很宽的溶液pH范围内都显示出对砷的快速快速吸附，具有出色的耐久性和可回收性，这可能使该复合材料成为有效去除水溶液中砷的非常有希望的候选者。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号