酯化淀粉/GO复合气凝胶的制备及其性能研究  

Preparation and properties of esterified starch/GO composite aerogels

作　　者：吕生华 梁珊 危得全 张姗姗 左晶晶 LV Sheng-hua;LIANG Shan;WEI De-quan;ZHANG Shan-shan;ZUO Jing-jing(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021

出　　处：《应用化工》2023年第5期1333-1338,共6页Applied Chemical Industry

基　　金：国家自然科学基金面上项目(21276152);陕西省区域创新能力引导计划项目(2021QFY04-04)。

摘　　要：以改性淀粉、氧化石墨烯为基体,利用丙烯酸为交联剂,成功制备了酯化淀粉/GO复合气凝胶并探究了其对Pb^(2+)的吸附性能。采用XRD、FTIR、SEM对材料进行了结构和形貌表征,通过电感耦合等离子发射光谱对金属离子浓度进行检测,探究了不同条件对复合气凝胶吸附金属离子的影响。结果表明,复合气凝胶具有三维立体结构和孔洞结构,具备吸附金属离子的良好条件。在研究所得制备条件下,淀粉与丙烯酸、GO质量比为1∶1∶0.02、pH为4.6左右时酯化淀粉/丙烯酸/GO复合气凝胶对Pb 2+的吸附性能最佳,且吸附6 h基本达到吸附平衡,最大吸附容量为510.65 mg/g。A composite aerogel was successfully prepared by using graphene oxide and esterified starch as the matrix and acrylic acid as crosslinking agent,and the adsorption properties of Pb^(2+)were explored.The structure and morphology of the material were characterized by XRD,FTIR and SEM,and the effect of different conditions on the adsorption of metal ions on the composite aerogel was explored by detecting the concentration of metal ions by inductively coupled plasma emission spectroscopy.The results show that the composite aerogel has a three-dimensional structure and porous structure,providing good conditions for adsorbing metal ions.When mass ratio of starch,acrylic acid and GO was 1∶1∶0.02,and pH was about 4.6,the adsorption performance of esterified starch/acrylic acid/graphene oxide composite aerogel for Pb 2+was the best,and the adsorption reached the adsorption equilibrium for 6 h,the maximum adsorption capacity is 510.65 mg/g.

关 键 词：酯化淀粉 氧化石墨烯 复合气凝胶 吸附 

分 类 号：TQ016[化学工程] TQ031.2