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该文以废弃聚丙烯为碳源、甲酸镍为催化剂前驱体、蒙脱土为载体,采用高温裂解法制备了碳纳米管。通过红外光谱(FTIR)、X射线衍射仪(XRD)、扫描电镜(SEM)和紫外分光光度计(UV)对自制碳纳米管进行了结构表征和对亚甲基蓝吸附性能的测试。实验结果表明:该方法制备的碳纳米管符合其结构特征且具有优异的吸附性能,当亚甲基蓝浓度为10%,p H=9时,吸附效率可达97.2%,随着p H值降低、亚甲基蓝浓度的升高,吸附效率降低。所制备的碳纳米管在环境领域具有很高的应用价值。
In this paper, waste polypropylene as carbon source, nickel formate catalyst precursor, montmorillonite as a carrier, prepared by high-temperature pyrolysis of carbon nanotubes. The self-made carbon nanotubes were characterized by FTIR, XRD, SEM and UV spectrophotometry. The adsorption properties of methylene blue were tested. The experimental results show that the carbon nanotubes prepared by this method are characterized by their structural characteristics and excellent adsorption properties. When the methylene blue concentration is 10%, the adsorption efficiency can reach 97.2% with p H = 9. With the decrease of p H, The concentration increases, the adsorption efficiency decreases. The prepared carbon nanotubes have very high application value in the field of environment.