Ultra-high adsorption capacity of MgO/SiO2 composites with rough surfaces for Congo red removal from water

被引：82

作者：

Hu, Mengqing ^{[1
]}

Yan, Xinlong ^{[1
]}

Hu, Xiaoyan ^{[1
]}

Zhang, Jiajin ^{[1
]}

Feng, Rui ^{[1
]}

Zhou, Min ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2018年 / 510卷

关键词：

MgO-SiO2; composites; Adsorption; Congo red; MGO NANOSTRUCTURES; AQUEOUS-SOLUTIONS; DYES; PERFORMANCE; CATALYSTS; EQUILIBRIUM; NANOSHEETS; PARTICLES; CHEMISTRY; FLUORIDE;

D O I：

10.1016/j.jcis.2017.09.063

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：

Due to its high isoelectric point, relative safety and low environmental toxicity, magnesium oxide has attracted much attention for its role in the removal of toxic dyes from wastewater. Herein, MgO-SiO2 composites with rough surfaces were synthesized by a one-step method. The as-prepared composites were characterized for the adsorption of Congo red from water using adsorption kinetics and isotherms. The adsorption capacity of the 20% MgO-SiO2 sample could be as high as 4000 mg/g at 25 degrees C, which is the highest value reported to date. The adsorption process of Congo red on the as-synthesized samples obeyed the Langmuir adsorption model. The MgO-SiO2 composite sample could be regenerated by calcination, and the regeneration efficiency remained for up to 5 cycles of the regeneration. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：111 / 117

页数：7

共 45 条

[1] Equilibrium studies on adsorption of Cu(II) from aqueous solution onto cellulose [J].

Acemioglu, B ;

Alma, MH .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2001, 243 (01) :81-84

[2] Adsorption of dyes by ACs prepared from waste tyre reinforcing fibre. Effect of texture, surface chemistry and pH [J].

Acevedo, Beatriz ;

Rocha, Raquel P. ;

Pereira, Manuel F. R. ;

Figueiredo, Jose L. ;

Barriocanal, Carmen .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2015, 459 :189-198

[3] Modified maghemite nanoparticles as an efficient adsorbent for removing some cationic dyes from aqueous solution [J].

Afkhami, Abbas ;

Saber-Tehrani, Mohammad ;

Bagheri, Hasan .

DESALINATION, 2010, 263 (1-3) :240-248

[4] Adsorptive removal of Congo red, a carcinogenic textile dye, from aqueous solutions by maghemite nanoparticles [J].

Afkhami, Abbas ;

Moosavi, Razieh .

JOURNAL OF HAZARDOUS MATERIALS, 2010, 174 (1-3) :398-403

[5] One-pot synthesis of highly efficient MgO for the removal of Congo red in aqueous solution [J].

Bai, Zongquan ;

Zheng, Yajun ;

Zhang, Zhiping .

JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (14) :6630-6637

[6] Synthesis and characterization of coralline magnesium oxide nanoparticles [J].

Boddu, Veera M. ;

Viswanath, Dabir S. ;

Maloney, Stephen W. .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (05) :1718-1720

[7] Laser sintering of magnesia with nanoparticles of iron oxide and aluminum oxide [J].

Garcia, L. V. ;

Mendivil, M. I. ;

Das Roy, T. K. ;

Castillo, G. A. ;

Shaji, S. .

APPLIED SURFACE SCIENCE, 2015, 336 :59-66

[8] Sorption studies of acid dye by mixed sorbents [J].

Ho, YS ;

Chiang, CC .

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, 2001, 7 (02) :139-147

[9] Effective removal of fluoride by porous MgO nanoplates and its adsorption mechanism [J].

Jin, Zhen ;

Jia, Yong ;

Zhang, Kai-Sheng ;

Kong, Ling-Tao ;

Sun, Bai ;

Shen, Wei ;

Meng, Fan-Li ;

Liu, Jin-Huai .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 675 :292-300

[10] Magnesium oxide nanosheets as effective catalysts for the synthesis of diethyl carbonate from ethyl carbamate and ethanol [J].

Li, Fengjiao ;

Li, Huiquan ;

Wang, Liguo ;

He, Peng ;

Cao, Yan .

CATALYSIS SCIENCE & TECHNOLOGY, 2015, 5 (02) :1021-1034

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