Surface Modification of MWCNTs with Carboxylic-to-Amine and Their Superb Adsorption Performance

被引：41

作者：

Sadegh, Hamidreza ^{[1
]}

Ali, Gomaa Abdelgawad Mohammed ^{[2
,3
,4
]}

Agarwal, Shilpi ^{[5
]}

Gupta, Vinod Kumar ^{[5
]}

机构：

[1] West Pomeranian Univ Technol, Inst Inorgan Chem Technol & Environm Engn, Fac Chem Technol & Engn, Ul Pulaskiego 10, PL-70322 Szczecin, Poland

[2] Al Azhar Univ, Fac Sci, Chem Dept, Assiut 71524, Egypt

[3] Al Azhar Univ, Al Azhar Ctr Nanosci & Applicat ACNA, Assiut 71524, Egypt

[4] Univ Malaysia Pahang, Fac Ind Sci & Technol, Kuantan 26300, Pahang, Malaysia

[5] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Fac Sci, Jeddah 21589, Saudi Arabia

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH | 2019年 / 13卷 / 03期

关键词：

MWCNT-NH2; Methyl orange; Chemisorption; Thionyl chloride treatments; WALLED CARBON NANOTUBES; METHYL-ORANGE DYE; PALM KERNEL SHELL; AQUEOUS-SOLUTION; MALACHITE GREEN; GRAPHENE OXIDE; ACTIVATED CARBON; PHOTOCATALYTIC DEGRADATION; ASSISTED REMOVAL; WASTE-WATER;

D O I：

10.1007/s41742-019-00193-w

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, multi-walled carbon nanotubes (MWCNT) surface functionalization with amine group is studied for methyl orange (MO) dye removal from aqueous solution. The adsorbent was prepared using 1,2-ethylenediamine as amine via a microwave combination to functionalize the carbon nanotubes with carboxylic acid (-COOH) then converting to acyl chloride (-COCl) as intermediate using thionyl chloride. The prepared material shows a suburb adsorption performance of MO removal with ahigh adsorption capacity of 96mgg(-1). In addition, the equilibrium data are introduced by the Langmuir and Freundlich isotherms, and showed Langmuir is the best fit with the adsorption capacity of 25.73mgg(-1). Moreover, pseudo-second order is found to be the best kinetic model to fit the experimental data. According to kinetics results, the adsorption process involves chemisorption step. MWCNT-NH2 is an excellent candidate to be used as an effective adsorbent for pollution removal from the aqueous environment. [GRAPHICS] .

引用

页码：523 / 531

页数：9

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