Adsorption of Cationic Red X-GRL from Aqueous Solutions by Graphene: Equilibrium, Kinetics and Thermodynamics Study

被引：0

作者：

Li, Y. H. ^{[1
,2
]}

Liu, T. ^{[1
]}

Du, Q. ^{[1
]}

Sun, J. ^{[1
]}

Xia, Y. ^{[1
]}

Wang, Z. ^{[1
]}

Zhang, W. ^{[3
,4
]}

Wang, K. ^{[3
,4
]}

Zhu, H. ^{[3
,4
]}

Wu, D. ^{[3
,4
]}

机构：

[1] Qingdao Univ, Growing Base State Key Lab, Lab Fiber Mat & Modern Text, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Coll Electromech Engn, Qingdao 266071, Peoples R China

[3] Tsinghua Univ, Key Lab Adv Mfg Mat Proc Technol, Beijing 100084, Peoples R China

[4] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

来源：

CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY | 2011年 / 25卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Graphene; dye; adsorption; kinetics; thermodynamics; ACTIVATED CARBON; TEXTILE DYE; NEUTRAL RED; REMOVAL; NANOTUBES; WATER; AZO; IONS; ACID; BLUE;

D O I：

暂无

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Graphene was prepared and used as an adsorbent for removal of cationic red X-GRL from aqueous solutions. The physico-chemical properties of graphene were characterized by the transmission electron microscope (TEM), the Brunauer-Emmett-Teller (BET) specific surface area measurement, atomic force microscope (AFM), and Raman microscope. The adsorption properties of cationic red X-GRL onto graphene were studied as a function of pH, adsorbent dosage, contact time, and temperature. Kinetic data were well fitted by a pseudo second-order model. Langmuir and Freundlich adsorption models were applied to describe the isotherms and isotherm constants. Equilibrium data agreed very well with the Langmuir model. Thermodynamic studies showed that the adsorption was a spontaneous and endothermic process.

引用

页码：483 / 491

页数：9

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