摘要
利用离子凝胶法制备纳米壳聚糖(nano-CS),并探究纳米壳聚糖的合成条件。同时通过以绿茶提取液绿色合成纳米铁(GT-Fe NPs)沉积在纳米壳聚糖,制备纳米壳聚糖合成纳米铁新材料(CS-Fe NPs)。扫描电子显微镜(SEM)、X-射线粉末衍射(XRD)、傅里叶变换红外光谱(FT-IR)等分析手段对制备的nano-CS、GT-Fe NPs、CS-Fe NPs的结构形态进行表征,并将nano-CS,GT-Fe NPs,CS-Fe NPs用于去除Cr(Ⅵ)污染。结果表明在相同的实验条件下,nano-CS、GT-Fe NPs、CS-Fe NP微粒对Cr(Ⅵ)的去除率分别为44.4%、57.7%、79.7%。说明CS-Fe NP有望成为去除Cr(Ⅵ)污染的新型环境友好材料。
Chitosan nanoparticles(nano-CS)were synthesized by ionic gelation method,and the optimal conditions of synthesis nano-CS were explored.Iron nanoparticles(GT-Fe NPs),chitosan-metal complex nanoparticles(CS-Fe NPs)were synthesized by a green method based on green tea extracts as reductive agents.The scanning electron microscopy(SEM),X-ray powder diffraction(XRD)and Fourier transform infrared spectrometer(FT-IR)was used to characterize morphology and surface composition.Chitosan nanoparticles,iron nanoparticles and chitosan/iron nanoparticles iron were synthesized and used to removal of Cr(Ⅵ).The results showed that the removal efficiency of Cr(Ⅵ)using nano-CS,GT-Fe NPs and CS-Fe NPs was 44.4%,57.7%and 79.7%,respectively.This study demonstrated that CS-Fe NPs could be a potential green nanomaterial used for the removal of heavy metal ions.
作者
马丽
易春容
翁秀兰
陈祖亮
MA Li;YI Chun-rong;WENG Xiu-lan;CHEN Zu-liang(School of Environmental Science and Engineering,Key Laboratory of Pollution Control and Resource Reuse of Fujian Province,Fujian Normal University,Fuzhou 350007,China;Fujian Key Laboratory of Polymer Materials,Fuzhou 350007,China)
出处
《广州化学》
CAS
2018年第2期9-14,29,共7页
Guangzhou Chemistry
基金
福建省自然科学基金资助项目(2016J05028)
关键词
离子凝胶法
改性
绿色合成纳米壳聚糖-铁
ionic gelation method
modification
green synthesis chitosan/iron nanoparticle
