Eco-friendly approach for effective removal for Congo red dye from wastewater using reusable Zn-Al layered double hydroxide anchored on multiwalled carbon nanotubes supported sodium dodecyl sulfonate composites

被引：39

作者：

Zong, Pengfei ^{[1
]}

Wang, Shoufang ^{[2
]}

Liang, Guihai ^{[1
]}

Shao, Min ^{[1
]}

Yan, Ning ^{[1
]}

Xu, Xuejuan ^{[1
]}

Xu, Ming ^{[1
]}

Li, Wei ^{[1
]}

Yang, Yixuan ^{[1
]}

Chen, Jiahao ^{[1
]}

Qiu, Zhengrong ^{[1
]}

机构：

[1] North Univ China, Natl Demonstrat Ctr Expt Comprehens Chem Engn Edu, Sch Chem Engn & Technol, Shanxi Prov Key Lab Funct Nanocomposites, Taiyuan 030051, Shanxi, Peoples R China

[2] North Univ China, Sch Sci, Taiyuan 030051, Shanxi, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 349卷

基金：

中国国家自然科学基金;

关键词：

Congo red; Zn-Al LDH/SDS/MWCNTs; Adsorption performance; Interaction mechanism; ENHANCED ADSORPTION; GRAPHENE OXIDE; METHYLENE-BLUE; AQUEOUS-SOLUTIONS; MALACHITE GREEN; FABRICATION; NANOPARTICLES; ADSORBENT; MECHANISM; ORANGE;

D O I：

10.1016/j.molliq.2022.118468

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：

Herein, high-activityand petal-like Zn-Al layered double hydroxide/multiwalled carbon nanotubes supported sodium dodecyl sulfonate (Zn-Al LDH/SDS/MWCNTs) composites were successfully synthesized as novel, eco-friendly and effective adsorbents. The particularly physical and chemical properties of Zn-Al LDH/SDS/MWCNTs composites were characterized in detail. Besides, the adsorption performance and interaction mechanism of Congo red onto Zn-Al LDH/SDS/MWCNTs were also investigated under various experiment conditions. The initial pH values and adsorbent concentration played significant part in adsorption performance of Congo red dye. The adsorption kinetics and temperature-dependent isotherms of Congo red onto Zn-Al LDH/SDS/MWCNTs were respectively consistent with pseudo second-order model and Langmuir model. The maximum adsorption capacity of Congo red was greatly achieved to 1.42 x 10(-3) mol/g adopting Langmuir model, which was much better than those previously reported other composites to date. The experimental results illustrated that the adsorption performance of Congo red onto Zn-Al LDH/SDS/MWCNTs composites was primarily contributed to surface complexation, ion change, pi-pi interaction, electrostatic interaction together with hydrogen bond to some extent. The experimental results demonstrated that the as-synthesized Zn-Al LDH/SDS/MWCNTs composites are remarkable adsorbents for the wastewater treatment systems. Our study initials a new foresight for understanding the interaction mechanism and preparing highly efficient and eco-friendly adsorbents with excellent adsorption performance for the elimination of organic contaminants. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：14

共 1 条

[1] Highly efficient and rapid removal of Congo red dye from textile wastewater using facile synthesized Mg/Ni/Al layered double hydroxide
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Ahmed, Hend M.
Altalhi, Amal A.
Al-Shamiri, Hamdan A. S.
Negm, Nabel A.
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