Enhanced Adsorption of Bisphenol A from Aqueous Solution with 2-Vinylpyridine Functionalized Magnetic Nanoparticles

被引：44

作者：

Li, Qiang ^{[1
,2
,3
]}

Pan, Fei ^{[1
]}

Li, Wentao ^{[3
]}

Li, Dongya ^{[1
]}

Xu, Haiming ^{[1
]}

Xia, Dongsheng ^{[1
,2
]}

Li, Aimin ^{[3
]}

机构：

[1] Wuhan Text Univ, Sch Environm Engn, Wuhan 430073, Peoples R China

[2] Minist Educ, Engn Res Ctr Clean Prod Text Dyeing & Printing, Wuhan 430073, Peoples R China

[3] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210023, Jiangsu, Peoples R China

来源：

POLYMERS | 2018年 / 10卷 / 10期

基金：

中国国家自然科学基金;

关键词：

2-vinylpyridine; magnetic nanoparticles; bisphenol A; adsorption; reusability; CARBON NANOTUBES; SOLUTION CHEMISTRY; REMOVAL; WATER; BPA; NANOCOMPOSITES; COMPOSITES; ADSORBENTS; CHEMICALS; ESTRADIOL;

D O I：

10.3390/polym10101136

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this study, a novel 2-vinylpyridine functionalized magnetic nanoparticle (Mag-PVP) was successfully prepared. The prepared Mag-PVP was characterized by transmission electronic microscopy (TEM), Fourier transform infrared spectrophotometry (FT-IR), vibrating sample magnetometry (VSM) and thermogravimetric analysis (TGA), and was used for the adsorption of bisphenol A (BPA) from aqueous solutions. Mag-PVP, which is composed of Fe3O4 nanoparticles and poly divinylbenzene-2-vinylpyridine (with a thickness of 10 nm), exhibited magnetic properties (M-s = 44.6 emu/g) and thermal stability. The maximum adsorption capacity (Q(m)) of Mag-PVP for BPA obtained from the Langmuir isotherm was 115.87 mg/g at 20 degrees C, which was more than that of Fe3O4 nanospheres. In the presence of NaCl, the improved adsorption capacity of Mag-PVP was probably attributed to the screening effect of Mag-PVP surface charge and salting-out effect. In the presence of CaCl2 and humic acid (HA), the adsorption capacity of BPA decreased due to competitive adsorption. The adsorption of BPA by Mag-PVP increased slightly with the increase in pH from 3.0 to 5.0 and obtained the largest adsorption amount at pH 5.0, which was probably attributed to hydrogen bonding interactions. Moreover, in actual water, Mag-PVP still showed excellent adsorption performance in removing BPA. The high adsorption capacity and excellent reusability performance in this work indicated that Mag-PVP was an effective adsorbent for removing BPA from aqueous solutions.

引用

页数：15