Preparation and Characterization ofβ-Cyclodextrin/Poly(acrylic acid)/Permutite Hydrogel Composite for U(Ⅵ)Adsorption  

作　　者：ZHANG Zi-Hui ZHANG Wen XU Xiao-Ping OU Min-Rui 张子惠;张雯;许小平;欧敏锐(College of Chemistry,Fuzhou University,Fuzhou 350116,China;College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]College of Chemistry,Fuzhou University,Fuzhou 350116,China [2]College of Chemical Engineering,Fuzhou University,Fuzhou 350116,China

出　　处：《Chinese Journal of Structural Chemistry》2020年第10期1795-1806,1742,共13页结构化学（英文）

基　　金：the Scientific Research Initiation Project of Fuzhou University for Thousand Talents Program Experts(0041-510248);the Science and Technology Development Fund of Fuzhou University(0041-510299)。

摘　　要：Uranium in the environment can damage human health and ecosystem.There is a need for excellent adsorbents to remove U(Ⅵ)from aqueous solutions.Here we synthesized a novelβ-cyclodextrin/poly(acrylic acid)/permutite(CAP)hydrogel composite by a simple method.Physicochemical characterizations of the materials were conducted by XRD,FTIR,SEM,EDX,and TGA.The effect of pH value,contact time,initial U(Ⅵ)concentration,and temperature were researched.A pseudo-second-order kinetic model,intra-particle diffusion model,and Langmuir isotherm model were used to describe the U(Ⅵ)adsorption behavior,and the maximum adsorption capacity of U(Ⅵ)was 833.33 mg/g at 25℃.Thermodynamic analysis showed that the adsorption process of U(Ⅵ)was endothermic and spontaneous.Furthermore,the excellent reusability indicated that CAP hydrogel composite could be potentially used as a promising sorbent for the removal of U(Ⅵ)in wastewater.

关 键 词：Β-CYCLODEXTRIN acrylic acid HYDROGEL ADSORPTION U(Ⅵ) 

分 类 号：O647.33[理学—物理化学] X591[理学—化学]