• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Influence of the aromatic surface on the capacity of adsorption of VOCs by magnetite supported organic-inorganic hybrids
【24h】

Influence of the aromatic surface on the capacity of adsorption of VOCs by magnetite supported organic-inorganic hybrids

机译：芳香表面对磁铁矿对VOCS吸附能力的影响支持的有机无机杂种

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It has been recently evidenced that hybrid magnetic nanomaterials based on perylene diimide (PDI) dopamine and iron oxide nanoparticles are useful for the adsorption and determination of volatile organic compounds (VOCs). However, NDI compounds are expensive and difficult to handle compared to smaller size diimides. Therefore, in this manuscript a combined experimental and theoretical investigation is reported including the analysis of the effect of changing the aromatic surface on the ability of these magnetite supported organic-inorganic hybrid nanoparticles (NPs) to adsorb several aromatic and non-aromatic VOCs. In particular, two new hybrid Fe(3)O(4)NPs are synthesized and characterized where the size of organic PDI dopamine linker is progressively reduced to naphthalene diimide (NDI) and pyromellitic diimide (PMDI). These materials were utilized to fill two sorbent tubes in series. Thermal desorption (TD) combined with capillary gas chromatography (GC)/flame detector (FID) was used to analyze both front and back tubes. Adsorption values (defined as % VOCs found in the front tube) were determined for a series of VOCs. The binding energies (DFT-D3 calculations) of VOC-Fe3O4NP complexes were also computed to correlate the electron-accepting ability of the arylene diimide (PDI, NDI or PMDI) with the adsorption capacity of the different tubes. The prepared hybrids can be easily separated magnetically and showed great reusability.
机译：最近已经证明，基于Perylene二酰亚胺（PDI）多巴胺和氧化铁纳米颗粒的混合磁性纳米材料可用于吸附和测定挥发性有机化合物（VOC）。然而，与较小的二酰亚胺相比，NDI化合物昂贵且难以处理。因此，在该手稿中，报告了组合的实验和理论研究，包括分析改变芳香表面对这些磁铁矿的能力的效果，这些磁铁矿支持的有机 - 无机杂化纳米颗粒（NPS）吸附几种芳族和非芳族VOC。特别地，合成了两种新的杂交Fe（3）O（4）NPS，其特征在于有机PDI多巴胺连接物的尺寸逐渐减少到萘二酰亚胺（NDI）和吡啉代雷二酰亚胺（PMDI）。这些材料被用来填充两种吸附剂管。热解吸（TD）与毛细管气相色谱（GC）/火焰检测器（FID）结合使用来分析前后管。测定一系列VOC的吸附值（定义为前管中发现的％VOC）。还计算了VOC-Fe3O4NP复合物的结合能量（DFT-D3计算）以将亚芳基二酰亚胺（PDI，NDI或PMDI）的电子接受能力与不同管的吸附能力相关联。制备的混合动力器可以易于磁性地分离并显示出很大的可重用性。

著录项

  • 来源
    《RSC Advances》 |2019年第42期|共8页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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