PPy/SA/SDS气凝胶制备及其吸附性能研究  

Research on the Preparation and Adsorption Properties of Polypyrrole/Sodium Alginate/Sodium Dodecyl Sulfonate Aerogel

作　　者：周爱华[1] 王爱萍 隋晶[3] ZHOU Aihua;WANG Aiping;SUI Jing(School of Biological and Chemical Engineering,Qingdao Technical College,266555,Qingdao,Shandong,PRC;Institute of Materials Science and Engineering,Ocean University of China,266404,Qingdao,Shandong,PRC;Analytical Center,Qingdao University of Science and Technology,266042,Qingdao,Shandong,PRC)

机构地区：[1]青岛职业技术学院生物与化工学院,山东青岛266555 [2]中国海洋大学材料科学与工程学院,山东青岛266404 [3]青岛科技大学分析测试中心,山东青岛266042

出　　处：《江西科学》2024年第5期1002-1007,共6页Jiangxi Science

基　　金：山东省自然科学基金项目(ZR2020ME069);青岛职业技术学院重点科研项目(2022ZD03)。

摘　　要：利用原位化学氧化法和冷冻干燥法制备聚吡咯/海藻酸钠(PPy/SA)气凝胶和十二烷基磺酸钠掺杂型聚吡咯/海藻酸钠(PPy/SA/SDS)气凝胶。利用傅里叶红外光谱仪(FTIR)、差示扫描量热分析仪(DSC)、扫描电镜(SEM)对气凝胶的结构和形貌进行表征,对气凝胶在亚甲基蓝吸附性能进行分析。结果表明,十二烷基磺酸钠掺杂型聚吡咯/海藻酸钠(PPy/SA/SDS)气凝胶密度大,表面致密,内部具有相互连接通道的三维多孔结构且力学性能优异。PPy/SA/SDS气凝胶吸附性能优于PPy/SA气凝胶,最大吸附容量为17.78 mg/g;二次吸附其吸附容量为14.33 mg/g。PPy/SA/SDS气凝胶对亚甲基蓝吸附过程符合拉格朗日准二级动力学方程,表明该吸附过程以化学吸附为主。Polypyrrole/sodium alginate(PPy/SA)aerogel and sodium dodecyl sulfonate(SDS)doped polypyrrole/sodium alginate(PPy/SA/SDS)aerogel were prepared by using in-situ chemical oxidation and freeze-drying method.The study compared the preparation processes of the two aerogels and conducted the mechanical performance tests.The microstructure and morphology of the aerogels were characterized by employing infrared spectroscopy,differential scanning calorimetry and scanning electron microscopy.The adsorption performance of aerogel for methylene blue was studied.The results showed that PPy/SA/SDS aerogel had high density,dense surface,three-dimensional porous structure with interconnected channels and excellent mechanical properties.The adsorption performance of PPy/SA/SDS aerogel was better than that of PPy/SA aerogel,with a maximum adsorption capacity of 17.78 mg/g,after which the second adsorption capacity was 14.33 mg/g.The adsorption kinetics study of PPy/SA/SDS aerogel toward methylene blue showed that the adsorption was consistent with Lagrange’s pseudo-second-order kinetic equation,indicating that the adsorption process was mainly chemisorptive.

关 键 词：海藻酸钠 聚吡咯 十二烷基磺酸钠 气凝胶 吸附 

分 类 号：TQ31[化学工程—高聚物工业]