摘要
It is emergent to develop a green waste water adsorbent with high efficiency.Therefore,a type of low-cost,green and environmentally friendly konjac glucomannan(KGM)-silk fibroin(SF)composite aerogels were compounded via simple chemical grafting and vacuum freeze drying,and a study on its adsorption capacity was also conducted.The characterizations of FT-IR,SEM,XRD and DSC indicate that the modified aerogels show a porous network space structure and there is a strong hydrogen bond effect between the KGM and SF molecules,which improves the density,compressive strength and thermal stability of aerogel materials.The adsorption experiments show that KGM-SF aerogels can effectively adsorb the water pollutants Cr(Ⅲ)with a maximal adsorption capacity of 82 mg·g^(-1).In addition,the adsorption isotherm and dynamic model analysis are used to elaborate the adsorption mechanism of KGM-SF aerogels and explain that the composite aerogels can be single molecule chemisorption.KGM-SF aerogels have potential adsorption capacity.
作者
陈涵
吴春华
黄毅
吴华华
庞杰
CHEN Han;WU Chun-Hua;HUANG Yi;WU Hua-Hua;PANG Jie(Engineering Research Centre of Fujian-Taiwan Special Marine Food Processing and Nutrition,Ministry of Education,Fuzhou 350002,China;State Key Laboratory of Food Safety Technology for Meat Products,Xiamen 361100,China;College of Food Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Key Laboratory of Marine Biotechnology of Fujian Province,Institute of Oceanology,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Fujian University of Technology,Fuzhou 350118,China)
基金
financially supported by the National Natural Science Foundation of China(31471704,31772045)。
