Adsorption of cationic dye (methylene blue) from aqueous solution using poly(cyclotriphosphazene-co-4,4'-sulfonyldiphenol) nanospheres

被引：88

作者：

Chen, Zhonghui ^{[1
]}

Fu, Jianwei ^{[1
]}

Wang, Minghuan ^{[1
]}

Wang, Xuzhe ^{[1
]}

Zhang, Jianan ^{[1
]}

Xu, Qun ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, 75 Daxue Rd, Zhengzhou 450052, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2014年 / 289卷

基金：

中国国家自然科学基金;

关键词：

Polymer; Methylene blue; Adsorption; Kinetics model; Nanosphere; SEPARATION PERFORMANCE; REMOVAL; BIOSORPTION; NANOPARTICLES; NANOTUBES; COMPOSITE; KINETICS; WASTE;

D O I：

10.1016/j.apsusc.2013.11.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Poly(cyclotriphosphazene-co-4,4'-sulfonyldiphenol) (PZS) nanospheres were prepared by a simple precipitation polymerization method and used as an efficient and specific adsorbent for the removal of methylene blue (MB), a cationic dye from aqueous solution. The as-synthesized PZS nanospheres were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The effects of initial solution pH, initial MB concentration, adsorbent dosage, and contact time on MB adsorption have been investigated. Results showed that the neutral and basic solutions benefited MB adsorption. The pseudosecond-order model could be better fit to the experimental data compared with the pseudo-first-order kinetic adsorption model. In addition, Weber's intraparticle diffusion model was used to further understand the adsorption process. The mechanism of efficient and specific adsorption possibly involved the presence of numerous electron-rich N, P and S atoms in PZS, the electrostatic attraction and Tr-Tr stacking interactions between PZS nanospheres and MB. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：495 / 501

页数：7

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