聚噻吩/碳纳米管复合材料的制备及其对重金属离子的吸附

Preparation of Polythiophene/Carbon Nanotube Composite Material and Its Adsorption of Heavy Metal Ions

用原位化学氧化法,以氯仿为溶剂、无水三氯化铁为氧化剂,制备聚噻吩/碳纳米管复合材料,并对所得产物进行红外表征;通过改变实验温度及反应物料比,探讨实验条件对PTh/CNTs复合材料结构、性能的影响;将制备的PTh/CNTs复合材料涂敷于镍网上制成复合电极材料,测定其对铜离子的吸附能力。结果表明:制备得到以碳纳米管为核、聚噻吩为壳的核壳纳米线结构,这种结构因碳纳米管的支撑作用,使得聚噻吩较长的共轭结构得以保持;反应温度及反应物物料比对复合材料的导电性能以及聚合程度有一定影响;通过电导仪测定表明,PTh/CNTs复合电极材料对铜离子有一定吸附能力。该实验为CDI电极材料在废水中对重金属离子的吸附提供了可参照的实验依据。

An in-situ chemical oxidation method was used to prepare polythiophene/carbon nanotube composites with chloroform as the solvent and anhydrous ferric chloride as the oxidant,and the product was characterized by IR;Through changing the experimental temperature and the reaction material ratio,the effect of experimental conditions on the structure and performance of PTh/CNTs composite material was discussed;The prepared PTh/CNTs composite material was coated on a nickel mesh to make a composite electrode material,and its adsorption capacity for copper ions was measured.A core-shell nanowire structure with carbon nanotubes as the core and polythiophene as the shell was prepared.This structure could maintain the long conjugated structure of polythiophene due to the support of carbon nanotubes;reaction temperature and reaction material-to-material ratio had a certain influence on the electrical conductivity and the degree of polymerization of the composite;the measurement by the conductivity meter showed that the PTh/CNTs composite electrode material had a certain adsorption capacity for copper ions.This experiment provides a reference experimental basis for the adsorption of heavy metal ions by CDI electrode materials in wastewater.