• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Nanomaterials >Recovery of Neodymium (III) from Aqueous Phase by Chitosan-Manganese-Ferrite Magnetic Beads
【2h】

Recovery of Neodymium (III) from Aqueous Phase by Chitosan-Manganese-Ferrite Magnetic Beads

机译：壳聚糖-锰铁氧体磁珠从水相中回收钕（III）

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Neodymium is a key rare-earth element applied to modern devices. The purpose of this study is the development of a hybrid biomaterial based on chitosan (CS) and manganese ferrite (MF) for the recovery of Nd(III) ions from the aqueous phase. The preparation of the beads was performed in two stages; first, MF particles were obtained by the assessment of three temperatures during the co-precipitation synthesis, and the best nano-MF crystallites were incorporated into CS to obtain the hybrid composite material (CS-MF). The materials were characterized by FTIR, XRD, magnetization measurements, and SEM-EDX. The adsorption experiments included pH study, equilibrium study, kinetics study, and sorption–desorption reusability tests. The results showed that for MF synthesis, 60 °C is an appropriate temperature to obtain MF crystals of ~30 nm with suitable magnetic properties. The final magnetic CS-MF beads perform maximum adsorption at pH 4 with a maximum adsorption capacity of 44.29 mg/g. Moreover, the material can be used for up to four adsorption–desorption cycles. The incorporation of MF improves the sorption capacity of the neat chitosan. Additionally, the magnetic properties enable its easy separation from aqueous solutions for further use. The material obtained represents an enhanced magnetic hybrid adsorbent that can be applied to recover Nd(III) from aqueous solutions.
机译：钕是应用于现代设备的关键稀土元素。这项研究的目的是开发一种基于壳聚糖（CS）和锰铁氧体（MF）的混合生物材料，用于从水相中回收Nd（III）离子。珠粒的制备分两个阶段进行：首先，通过在共沉淀合成过程中评估三个温度来获得MF颗粒，然后将最佳的纳米MF晶体掺入CS中以获得杂化复合材料（CS-MF）。通过FTIR，XRD，磁化强度测量和SEM-EDX对材料进行了表征。吸附实验包括pH研究，平衡研究，动力学研究以及吸附-解吸重用性测试。结果表明，对于MF合成，60°C是获得具有合适磁性的〜30 nm MF晶体的合适温度。最终的CS-MF磁珠在pH 4时具有最大吸附能力，最大吸附容量为44.29 mg / g。此外，该材料最多可用于四个吸附-解吸循环。 MF的掺入提高了纯壳聚糖的吸附能力。另外，磁性能使其易于从水溶液中分离出来以进一步使用。获得的材料代表一种增强的磁性杂化吸附剂，可用于从水溶液中回收Nd（III）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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