Yang Xiaoxia, Li Yanhui, Du Qiuju, Sun Jiankun, Chen Long, Hu Song, Wang Zonghua, Xia Yanzhi, Xia Linhua
Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; College of Textile, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
J Colloid Interface Sci. 2015 Sep 1;453:107-114. doi: 10.1016/j.jcis.2015.04.042. Epub 2015 May 2.
Novel anionic polyacrylamide/graphene oxide aerogels were prepared by a freeze drying method and used to remove basic fuchsin from aqueous solutions. These aerogels were sponge-like solid with lightweight, fluffy and porous structure. The batch adsorption experiments were carried out to study the effect of various parameters, such as the solution pH, adsorbent dose, contact time and temperature on adsorption properties of basic fuchsin onto anionic polyacrylamide/graphene oxide aerogels. The kinetics of adsorption corresponded to the pseudo-second-order kinetic model. The Langmuir adsorption isotherm was suitable to describe the equilibrium adsorption process. The maximum adsorption capacity was up to 1034.3 mg/g, which indicated that anionic polyacrylamide/graphene oxide aerogels were promising adsorbents for removing dyes pollutants from aqueous solution.
通过冷冻干燥法制备了新型阴离子聚丙烯酰胺/氧化石墨烯气凝胶，并将其用于从水溶液中去除碱性品红。这些气凝胶为海绵状固体，具有轻质、蓬松和多孔的结构。进行了批量吸附实验，以研究溶液pH值、吸附剂用量、接触时间和温度等各种参数对碱性品红在阴离子聚丙烯酰胺/氧化石墨烯气凝胶上吸附性能的影响。吸附动力学符合准二级动力学模型。Langmuir吸附等温线适用于描述平衡吸附过程。最大吸附容量高达1034.3 mg/g，这表明阴离子聚丙烯酰胺/氧化石墨烯气凝胶是从水溶液中去除染料污染物的有前景的吸附剂。
