壳聚糖介孔碳材料的制备及吸附单宁酸性能研究  

Adsorption of tannic acid on mesoporous carbon prepared with chitosan

作　　者：吴林媛 穆林玲 陈炷霖 贾双珠[1,2] 林倩 WU Lin-yuan;MU Lin-ling;CHEN Zhu-lin;JIA Shuang-zhu;LIN Qian(College of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;GuizhouProvincial Key Laboratory of Green Chemicals and Clean Energy Technology,Guiyang 550025,China)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州省绿色化工与清洁能源技术重点实验室,贵州贵阳550025

出　　处：《化学研究与应用》2021年第2期230-236,共7页Chemical Research and Application

基　　金：贵州省2019大学生创新项目(贵大国创字(2019)002号)资助。

摘　　要：以脱乙酰度85%壳聚糖为碳源、F127为致孔剂、三聚磷酸钠为交联剂,利用软模板法制备介孔碳材料。通过FTIR、Raman、N 2吸附/脱附分析仪、XRD、XPS以及TEM等手段对介孔碳结构进行表征。探讨乙酸浓度对介孔碳孔结构的影响及对单宁酸的吸附性能。结果表明,当乙酸浓度为0.17mol·L^(-1),碳源与致孔剂、交联剂质量比为1∶0.5∶0.25时制备的介孔碳总孔容、比表面积以及平均孔径分别为0.41cm 3·g^(-1)、237.2m 2·g^(-1)、5.01nm,单宁酸的最大平衡吸附量可达110.2mg·g^(-1)。Mesoporous carbon materials were prepared by soft template method using chitosan(deacetylation degree was 85%)as the carbon source,F127 as the pore-forming agent,and sodium tripolyphosphate as the cross-linking agent.The structure of mesoporous carbon material was characterized by FTIR,Raman,N 2 adsorption/desorption analyzer,XRD,XPS,TEM,etc.The effect of acetic acid concentration on the pore structure of mesoporous carbon materials and the adsorption performance for tannic acid were discussed.The results showed that when the mass ratio for carbon source,pore-forming agent and cross-linking agent was 1∶0.5∶0.25 in 0.17mol·L-1 acetic acid solution,the pore volume,specific surface area and average pore diameter of mesoporous carbon was 0.41cm 3·g-1,237.2m 2·g-1 and 5.01nm,and the maximum equilibrium adsorption capacity of tannic acid could reach 110.2mg·g-1.

关 键 词：壳聚糖 软模板法 介孔碳 单宁酸 

分 类 号：O621.3[理学—有机化学]