TY - JOUR
T1 - High-efficient adsorption for versatile adsorbates by elastic reduced graphene oxide/Fe3O4 magnetic aerogels mediated by carbon nanotubes
AU - Dang, Alei
AU - liu, Xin
AU - Wang, Yujia
AU - Liu, Yuhui
AU - Cheng, Tao
AU - Zada, Amir
AU - Ye, Fei
AU - Deng, Weibin
AU - Sun, Yiting
AU - Zhao, Tingkai
AU - Li, Tiehu
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/9/5
Y1 - 2023/9/5
N2 - Fabrication of highly elastic three-dimensional aerogel adsorbents with outstanding adsorption capacities is a long pursuit for the treatment of industrial contaminated water. In this work, a magnetic reduced graphene oxide (rGO)/Fe3O4/carbon nanotubes (CNTs) aerogel material was constructed by the electrostatic attraction between the negatively charged GO and positively charged CNTs following a one-pot water bath treatment. The as-synthesized aerogel demonstrated high compressive stress (28.4 kPa) and lower density (24.11 mg/cm3) with exceptional adsorption capacities for versatile adsorbates which are attributed to CNTs and magnetic Fe3O4 nanoparticles. The effect of pH, initial concentration of adsorbates (dyes, Cd (ІІ) ions, organic solvents, and pump oil), content of CNTs and cyclic times on the adsorption capacities of the aerogel were investigated in detail. Furthermore, from simulation, the adsorption kinetics, and thermodynamics of the aerogel for adsorbates were more satisfied by endothermic quasi-second-order kinetic model with characteristic physical adsorption. Thus, the optimized rGO/Fe3O4/CNTs-10 aerogel adsorbent can be used as a powerful and versatile tool to deal with contaminated industrial or domestic wastewater.
AB - Fabrication of highly elastic three-dimensional aerogel adsorbents with outstanding adsorption capacities is a long pursuit for the treatment of industrial contaminated water. In this work, a magnetic reduced graphene oxide (rGO)/Fe3O4/carbon nanotubes (CNTs) aerogel material was constructed by the electrostatic attraction between the negatively charged GO and positively charged CNTs following a one-pot water bath treatment. The as-synthesized aerogel demonstrated high compressive stress (28.4 kPa) and lower density (24.11 mg/cm3) with exceptional adsorption capacities for versatile adsorbates which are attributed to CNTs and magnetic Fe3O4 nanoparticles. The effect of pH, initial concentration of adsorbates (dyes, Cd (ІІ) ions, organic solvents, and pump oil), content of CNTs and cyclic times on the adsorption capacities of the aerogel were investigated in detail. Furthermore, from simulation, the adsorption kinetics, and thermodynamics of the aerogel for adsorbates were more satisfied by endothermic quasi-second-order kinetic model with characteristic physical adsorption. Thus, the optimized rGO/Fe3O4/CNTs-10 aerogel adsorbent can be used as a powerful and versatile tool to deal with contaminated industrial or domestic wastewater.
KW - FeO
KW - High-efficient adsorption
KW - Magnetic aerogel adsorbent
KW - Reduced graphene oxide
KW - Treatment of wastewater
UR - http://www.scopus.com/inward/record.url?scp=85161970647&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2023.131846
DO - 10.1016/j.jhazmat.2023.131846
M3 - 文章
C2 - 37320905
AN - SCOPUS:85161970647
SN - 0304-3894
VL - 457
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
M1 - 131846
ER -