羟基磷灰石/聚乙烯醇-聚丙烯酸纳米纤维对铀的吸附行为研究  

Study on the Adsorption Behavior of uranium byhydroxyapatite/polyvinyl alcohol-polyacrylic acid nanofiber

作　　者：邹融 戴荧[1] Zou Rong;Dai Ying(School of Chemical Biology and Material Science,East China University of Technology,Nanchang,Jiangxi Nanchang 330032)

机构地区：[1]东华理工大学化学生物与材料科学学院,江西南昌330013

出　　处：《江西化工》2021年第1期100-105,共6页Jiangxi Chemical Industry

摘　　要：以聚乙烯醇(PVA)、聚丙烯酸(PAA)为基体材料,采用静电纺丝技术将羟基磷灰石(HAP)成功负载进入纳米纤维中。测试了HAP/PVA/PAA的吸附容量、吸附等温线、动力学、热力学和重复使用性能。HAP/PVA/PAA的内球表面络合物使HAP/PVA/PAA具有较强的铀容量、良好的重复使用性,热力学描述了这种相互作用是一个随着熵的增加的吸热自发过程。本研究为水介质中铀的去除提供了一种纳米纤维材料。Using polyvinyl alcohol(PVA)and polyacrylic acid(PAA)as matrix materials,hydroxyapatite(HAP)was successfully loaded into nanofibers by electrospinning technology.The adsorption capacity,adsorption isotherm,kinetics,thermodynamics and reuse performance of HAP/PVA/PAA were tested.The inner spherical surface complex of HAP/PVA/PAA makes HAP/PVA/PAA have strong uranium capacity and good reusability.Thermodynamics describes that this interaction is an endothermic spontaneous process with the increase of entropy.This study provides a nanofiber material for the removal of uranium in aqueous medium.

关 键 词：羟基磷灰石 纳米纤维 膜 静电纺丝 超亲水 铀 

分 类 号：TQ340.64[化学工程—化纤工业] TQ424[环境科学与工程—环境工程] X591