论文部分内容阅读
为了解决碳纳米管(CNTs)在吸附水中污染物时易聚集、难分离的问题,本文采用静电自组装技术将碳纳米管固定化在具有微米级粒径的碳酸钙颗粒表面,设计制备了壳-核结构的CNTs基复合吸附剂.实验考查了不同碳纳米管分散体系对复合吸附剂制备的影响,并采用Zeta电位、拉曼光谱、扫描电镜等手段对复合吸附剂的制备过程和结构进行表征,探讨了制备的碳纳米管基复合吸附剂对菲的吸附性能.结果发现,复合吸附剂对菲的吸附能力随CNTs载量的增加而增大,CNTs标化的吸附系数则随CNTs载量的增加而下降,碳纳米管是复合吸附剂的主要吸附位点.
In order to solve the problem that carbon nanotubes (CNTs) are easily aggregated and hard to be separated when they adsorb water pollutants, an electrostatic self-assembly technique is adopted to immobilize the carbon nanotubes on the surface of the calcium carbonate particles with a micron-sized particle size. - nuclear structure of CNTs-based composite adsorbent experimentally investigated the different carbon nanotube dispersion system on the preparation of composite adsorbent, and Zeta potential, Raman spectroscopy, scanning electron microscopy and other means of composite adsorbent preparation process and structure The adsorption capacity of the composite adsorbents to phenanthrene increased with the increase of CNTs loading, and the adsorption coefficients of CNTs standardized with CNTs The amount of carbon nanotubes is the main adsorption sites for the composite adsorbent.