Amino-dendritic and carboxyl functionalized halloysite nanotubes for highly efficient removal of cationic and anionic dyes: Kinetic, isotherm, and thermodynamic studies

2021 ◽  
Vol 9 (3) ◽  
pp. 105214
Author(s):  
Mohammad Hassan Kanani-Jazi ◽  
Somaye Akbari
Keyword(s):  
Halloysite Nanotubes ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Thermodynamic Studies ◽  
Highly Efficient

Highly Efficient Adsorption of Anionic Dye on Acid-Treated Halloysite Nanotubes

2020 ◽  
Vol 20 (8) ◽  
pp. 5024-5027 ◽  
Author(s):  
Hyungwook Lee ◽  
Keonku Lee ◽  
Jongik Park ◽  
Jewon Lee ◽  
Jaegeun Noh
Keyword(s):  
Acid Treatment ◽  
Treatment Time ◽  
Total Surface Area ◽  
Halloysite Nanotubes ◽  
Structural Defects ◽  
Eosin Y ◽  
Anionic Dyes ◽  
Anionic Dye ◽  
Specific Pore Volume ◽  
Highly Efficient

The adsorption capability of eosin Y as a model anionic dye on natural halloysite nanotubes (HNTs) and sulfuric acid-treated HNTs as a function of acid treatment time (1 h, 3 h, and 5 h) was examined. Scanning electron microscopy revealed that natural HNTs had a very uniform surface, whereas acid-treated HNTs had a rough surface with structural defects, which increased with acid treatment time. The total specific pore volume and total surface area of the acid-treated HNTs increased due to formation of nanopores in the HNTs via dissolution of the inner AlO6 octahedral layer. With acid treatment, the surface ξ—potentials were positively shifted from −42.9 mV (for the natural HNTs) to −1.9, −3.0, and +1.2 mV after 1, 3, and 5 h, respectively. The adsorption amount (qe) of eosin Y on natural HNTs and the three acid-treated HNTs was 2.3, 125.5, 118.9, and 118.9 mg g−1, respectively, implying that the adsorption capacity of acid-treated HNTs is ~50 times higher than that of natural HNTs. In this study, we clearly demonstrated that acid-treated HNTs can be used as highly efficient nanomaterials for removal of dyes from wastewater containing anionic dyes.

Facile crosslinking synthesis of hyperbranch-substrate nanonetwork magnetite nanocomposite for the fast and highly efficient removal of lead ions and anionic dyes from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 67057-67071 ◽  
Author(s):  
Mingqiang Liu ◽  
Baochang Zhang ◽  
Huicai Wang ◽  
Fei Zhao ◽  
Yuan Chen ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Functional Group ◽  
Lead Ions ◽  
Surface Functional Group ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Highly Efficient ◽  
Adsorption Behaviors ◽  
Group Density ◽  
Effect Of Surface

The aim of the present work was to investigate the effect of surface functional group density on the adsorption behaviors of functionalized mesoporous Fe3O4.

scholarly journals Highly efficient removal of both cationic and anionic dyes from wastewater with a water-stable and eco-friendly Fe-MOF via host-guest encapsulation

2019 ◽  
Vol 239 ◽  
pp. 117767 ◽  
Author(s):  
Shuanghong Tian ◽  
Shuang Xu ◽  
Jinting Liu ◽  
Chun He ◽  
Ya Xiong ◽  
...  
Keyword(s):  
Efficient Removal ◽  
Anionic Dyes ◽  
Highly Efficient

Hyperbranched polymeric ionic liquid with imidazolium backbones for highly efficient removal of anionic dyes

2016 ◽  
Vol 287 ◽  
pp. 482-491 ◽  
Author(s):  
Wenqi Song ◽  
Yuyang Liu ◽  
Liwei Qian ◽  
Luying Niu ◽  
Liqun Xiao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Polymeric Ionic Liquid ◽  
Highly Efficient
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