| 碳纳米管基复合吸附剂的制备及其吸附性能 |
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| 引用本文： | 徐立恒,张明,陈锋.碳纳米管基复合吸附剂的制备及其吸附性能[J].环境科学学报,2014,34(6):1443-1448. |
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| 作者姓名： | 徐立恒 张明 陈锋 |
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| 作者单位： | 中国计量学院环境工程系, 杭州 310018;中国计量学院环境工程系, 杭州 310018;中国计量学院环境工程系, 杭州 310018 |
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| 基金项目： | 国家自然科学基金（No.21207125）；浙江省科技计划项目（No.2012C31027） |
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| 摘 要： | 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.
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| 关 键 词： | 碳纳米管 复合吸附剂 自组装 吸附性能 菲 |
| 收稿时间： | 9/4/2013 12:00:00 AM |
| 修稿时间： | 2013/10/24 0:00:00 |
Construction of CNTs-based composite adsorbents and their adsorption capacity |
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| XU Liheng,ZHANG Ming and CHEN Feng.Construction of CNTs-based composite adsorbents and their adsorption capacity[J].Acta Scientiae Circumstantiae,2014,34(6):1443-1448. |
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| Authors: | XU Liheng ZHANG Ming and CHEN Feng |
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| Institution: | Department of Environmental Engineering, China Jiliang University, Hangzhou 310018;Department of Environmental Engineering, China Jiliang University, Hangzhou 310018;Department of Environmental Engineering, China Jiliang University, Hangzhou 310018 |
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| Abstract: | In order to overcome the difficulties of dispersion and separation in water of carbon nanotubes (CNTs) as adsorbents, CNTs-based composite adsorbents were fabricated in this study by immobilizing CNTs onto CaCO3 templates with self-assembly technique.Zeta potential,Raman Spectroscopy and Scanning Electronic Microscopy were employed to characterize the structure of the composite adsorbents. It was found that carbon nanotubes were evenly stacked on the surface of CaCO3 particles forming shells. The adsorption capacities of the CNTs-based composite adsorbents were also evaluated. Results showed that CNTs were the dominant adsorption sites of CNTs-based composite adsorbents, and the adsorption capacity of composite adsorbents increased as the increase of loading amount of CNTs, while the CNTs standard adsorption coefficient (KCNT) decreased. |
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| Keywords: | carbon nanotubes (CNTs) composite adsorbent self assembly adsorption capacity phenanthrene |
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