Application of the graphene oxide/chitosan nanocomposite in the removal of methyl orange from aqueous solutions: a mechanism study

被引：0

作者：

Azadfar, Mina ^{[1
]}

Tahermansouri, Hasan ^{[2
]}

Qomi, Mahnaz ^{[3
]}

机构：

[1] Islamic Azad Univ, Fac Pharmaceut Chem, Dept Organ Chem, Tehran Med Sci, Tehran, Iran

[2] Islamic Azad Univ, Dept Chem, Ayatollah Amoli Branch, Amol, Iran

[3] Islamic Azad Univ, Act Pharmaceut Ingredients Res Ctr APIRC, Tehran Med Sci, Tehran, Iran

来源：

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 2021年 / 60卷 / 02期

关键词：

Adsorption isotherms; Desorption; Graphene oxide; Chitosan; Methyl orange; Thermodynamic; BRIDGED MESOPOROUS ORGANOSILICAS; ADSORPTIVE REMOVAL; DYES; ADSORBENT; KINETICS; OXIDE; NANOPARTICLES; ISOTHERMS; COMPOSITE; FIBER;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Graphene oxide (GO) and the functionalized graphene oxide with chitosan (GO-C) has been used for the removal of methyl orange from aqueous solutions. Batch experiments such as solution pH, amount of adsorbents, contact time, concentration of the methyl orange and temperature are carried out to study the sorption process. Kinetic studies are well described by pseudo-second-order kinetic model for both adsorbents. Isotherm studies have shown that Langmuir isotherm for GO and GO-C are the best to represent the measured sorption data. Negative Delta G degrees values indicate the nature of spontaneous adsorption process. Physical sorption is suggested for the adsorption process. In addition, methyl orange molecules can be desorbed from GO-C up to 79.2% at pH =11 and that the consumed GO-C can be reutilized up to 5th cycle of regeneration.

引用

页码：209 / 219

页数：11

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