Triphenylene-modified chitosan: novel high efficient sorbent for cationic and anionic dyes

被引：20

作者：

Yang, Fafu ^{[1
,2
]}

Bai, Xiaoyan ^{[1
]}

Xu, Bingting ^{[1
]}

Guo, Hongyu ^{[1
]}

机构：

[1] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350007, Peoples R China

[2] Fujian Normal Univ, Fujian Key Lab Polymer Mat, Fuzhou 350007, Peoples R China

来源：

CELLULOSE | 2013年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Chitosan; Triphenylene; Adsorption; Dye; DISCOTIC LIQUID-CRYSTALS; AQUEOUS-SOLUTION; ACID-SOLUTIONS; REACTIVE DYE; EOSIN-Y; ADSORPTION; BEADS; SORPTION; REMOVAL; MODEL;

D O I：

10.1007/s10570-012-9856-4

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

The first example of triphenylene-modified chitosan 4 was prepared by reacting chitosan with triphenylene aldehyde derivative 3. Its structure and morphology was characterized by elemental analysis, H-1 NMR, FTIR, XRD, SEM and AFM image. The triphenylene units in Tp-chitosan 4 appended on the skeleton of chitosan and possessed orderly layered structure. Adsorption experiments of Tp-chitosan 4 indicated that it possessed excellent adsorption capacities for both cationic and anionic dyes [Orange G sodium salt, Brilliant ponceau 5R, Victoria blue B (VB), Crystal violet (CV), Neutral red (NR) and Methylene blue]. The highest adsorption capacities for CV, VB and NR were 5.612, 5.353 and 5.375 mmol/g, respectively. Adsorption kinetics and isotherms analysis showed that the adsorption processes obeyed pseudo second-order model and the Langmuir isotherm equation. The adsorption processes were exothermic and spontaneous. The best pH values for adsorption were pH = 6-8.

引用

页码：895 / 906

页数：12

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