• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Environmental Technology >Efficient removal of Ag+ and Cu2+ using imine-modified/mesoporous silica-coated magnetic nanoparticles
【24h】

Efficient removal of Ag+ and Cu2+ using imine-modified/mesoporous silica-coated magnetic nanoparticles

机译：使用亚胺改性/中孔二氧化硅涂覆的磁性纳米粒子有效除去Ag +和Cu2 +

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

摘要

The present work focuses on the synthesis and application of imine-modified silica-coated magnetic (IM-SCM) nanoparticles. The X-ray diffraction (XRD) tests indicated the presence of highly crystalline cubic spinel magnetite both before and after coating with the silica. The FTIR spectra also proved the successful surface coating and imine-modification of the Fe3O4 nanoparticles. Further investigations were performed to examine the capability of the modified IM-SCM nanoparticles for simultaneous removal of Ag+ and Cu2+ from the water samples. Atomic absorption spectrometry was used for ion determination. The best operating conditions for removing the target ions were a pH=5-9 and a stirring time=30 min. Only 20 mL of 3M nitric acid was used for stripping the ions using the IM-SCM nanoparticles. The resulting data were found to fit well with the Langmuir model, and the maximum capacity of the adsorbent was determined to be 270.3 (± 1.4) mg and 256.4 (± 0.9) mg of Ag+ and Cu2+ /g of IM-SCM, respectively. The adsorbent was successfully used for simultaneously removing the target ions from the wastewater samples.
机译：本作者侧重于亚胺改性二氧化硅涂覆磁性（IM-SCM）纳米颗粒的合成和应用。 X射线衍射（XRD）试验表明涂布二氧化硅之前和之后的高结晶立方尖晶石磁铁矿。 FTIR光谱还证明了Fe3O4纳米颗粒的成功表面涂层和亚胺改性。进行进一步的研究以检查改性的IM-SCM纳米颗粒的能力，用于同时除去水样中的Ag +和Cu2 +。原子吸收光谱法用于离子测定。用于除去靶离子的最佳操作条件是pH = 5-9，搅拌时间= 30分钟。使用20mL 3M硝酸用于使用IM-SCM纳米颗粒剥离离子。发现得到的数据与Langmuir模型相适合，分别测定吸附剂的最大容量分别为270.3（±1.4）mg和256.4（±0.9）mg的IM-SCM的256.4（±0.9）mg。吸附剂成功地用于同时从废水样品中除去靶离子。

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