通过配位聚合的方式制备了一种新型的三组分复合材料(SC-GO-PANI),通过扫描电镜(SEM)等技术手段对结构进行了表征,并研究了吸附Ni2+离子的性能。同时,系统考察了吸附剂用量、pH、初始浓度和共存阴离子对吸附性能的影响。结果表明:该材料具有交联的网状空间结构和相对较大的比表面积。在298K下,吸附去除率最高可达96.71%,达到国标饮用水标准。此外,对Ni2+离子的吸附符合准二级动力学模型,属于单分子化学吸附,吸附等温线可用Freundlich方程描述。
A new three-component composite material (SC-GO-PANI) was prepared by coordination polymerization.The structure was characterized by scanning electron microscopy (SEM) and other technical methods,and studied the adsorption performance for Ni2+ ions.At the same time,the influence of the amount of adsorbent,pH,initial concentration and coexisting anions on the adsorption performance was examined.The results shown that the material had cross-linked network space structure and relatively large specific surface area.At 298K,the adsorption removal rate can reach up to 96.71%,reaching the national standard for drinking water.In addition,the adsorption of Ni2+ ions conformed to the quasi-second-order kinetic model and belonged to single-molecule chemical adsorption.The adsorption isotherm can be described by Freundlich equation.
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基金资助
国家自然科学基金(21761011);大学生创新创业训练计划项目(201810740001);甘肃省高等学校科研资助项目(2018A-088)
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