Sulfonated Hollow Covalent Organic Polymer: Highly-Selective Adsorption toward Cationic Organic Dyes over Anionic Ones in Aqueous Solution

2018 ◽  
Vol 36 (9) ◽  
pp. 826-830 ◽  
Author(s):  
Jian-Hong Wang ◽  
Yue Zhang ◽  
Lian-Cai An ◽  
Wen-He Wang ◽  
Ying-Hui Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Dyes ◽  
Selective Adsorption ◽  
Organic Polymer

An ionic covalent organic polymer toward highly selective removal of anionic organic dyes in aqueous solution

2020 ◽  
Vol 44 (20) ◽  
pp. 8572-8577
Author(s):  
Pengfei Song ◽  
Zonglian Zhang ◽  
Li Yu ◽  
Pei Wang ◽  
Qian Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Dyes ◽  
Selective Removal ◽  
Organic Polymer

A novel ionic COP was prepared for the highly selective removal of anionic organic dyes in aqueous solution.

Amino-Functionalized Multi-Walled Carbon Nanotubes as Novel Adsorbents for Selective Adsorption of Anionic Dyes in Aqueous Solution

NANO ◽  
2015 ◽  
Vol 10 (05) ◽  
pp. 1550065 ◽  
Author(s):  
Hui Huang ◽  
Jingang Yu ◽  
Wei Liu ◽  
Xinyu Jiang
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Organic Dyes ◽  
Selective Adsorption ◽  
Order Kinetic ◽  
Equilibrium Isotherms ◽  
Anionic Dyes ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this study, amino-functionalized multi-walled carbon nanotubes ( MWCNTs - NH 2) were successfully synthesized via an improved method and used for removal of organic dyes in aqueous solution. The synthesized MWCNTs - NH 2 were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscope (SEM), etc. The adsorption capacity and selectivity of MWCNTs - NH 2 for organic dyes was evaluated using rhodamine B ( RhB ), malachite green (MG), methyl orange (MO) and congo red (CR) as models. The selective adsorption toward anionic dyes was found for the MWCNTs - NH 2, and MO was selected as a typical anionic dye to deeply investigate the adsorption kinetics, equilibrium isotherms and thermodynamic parameters of the adsorption process. The adsorption kinetics and equilibrium isotherms data fitted well with the pseudo-second-order kinetic equation and Langmuir isotherm model. The thermodynamics study revealed that the adsorption of MO onto MWCNTs - NH 2 was spontaneous, exothermic and physisorptive in nature. The results indicated that MWCNTs - NH 2 are promising nanomaterials for removal of anionic dyes from industrial wastewater.

scholarly journals Amine functionalized 3D porous organic polymer as an effective adsorbent for removing organic dyes and solvents

RSC Advances ◽  
2017 ◽  
Vol 7 (48) ◽  
pp. 30500-30505 ◽  
Author(s):  
Yan He ◽  
Ting Xu ◽  
Jun Hu ◽  
Changjun Peng ◽  
Qiang Yang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Solvents ◽  
Organic Dyes ◽  
Organic Polymer ◽  
Porous Organic Polymer ◽  
Amine Functionalized ◽  
Fast Removal

We report the application of an amine functionalized triptycene-based 3D polymer (TPP-NH2) as a novel adsorbent for the fast removal of organic dyes in aqueous solution and organic solvents.

scholarly journals Microwave-assisted rapid synthesis of graphene-analogue hexagonal boron nitride (h-BN) nanosheets and their application for the ultrafast and selective adsorption of cationic dyes from aqueous solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (85) ◽  
pp. 53984-53995 ◽  
Author(s):  
Aliyar Mahdizadeh ◽  
Saeed Farhadi ◽  
Abedin Zabardasti
Keyword(s):  
Aqueous Solution ◽  
Boron Nitride ◽  
Aqueous Solutions ◽  
Organic Dyes ◽  
Hexagonal Boron Nitride ◽  
Selective Adsorption ◽  
Cationic Dyes ◽  
Rapid Synthesis ◽  
Microwave Assisted ◽  
Microwave Assisted Method

Graphene-analogue hexagonal boron nitride (h-BN) nanosheets are successfully synthesizedviaa facile and fast microwave-assisted method in 10 min and used as a novel adsorbent for the ultrafast removal of cationic organic dyes in aqueous solution.

Selective adsorption and separation of organic dyes from aqueous solution on polydopamine microspheres

2016 ◽  
Vol 461 ◽  
pp. 292-304 ◽  
Author(s):  
Jianwei Fu ◽  
Qianqian Xin ◽  
Xuechen Wu ◽  
Zhonghui Chen ◽  
Ya Yan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Dyes ◽  
Selective Adsorption

scholarly journals Sulfobetaine Cryogels for Preferential Adsorption of Methyl Orange from Mixed Dye Solutions

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 208
Author(s):  
Ramona B. J. Ihlenburg ◽  
Anne-Catherine Lehnen ◽  
Joachim Koetz ◽  
Andreas Taubert
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Methyl Orange ◽  
Dye Removal ◽  
Selective Adsorption ◽  
Water Soluble ◽  
Organic Substances ◽  
Preferential Adsorption ◽  
Dimethyl Ammonium ◽  
Dye Solutions

New cryogels for selective dye removal from aqueous solution were prepared by free radical polymerization from the highly water-soluble crosslinker N,N,N’,N’-tetramethyl-N,N’-bis(2-ethylmethacrylate)-propyl-1,3-diammonium dibromide and the sulfobetaine monomer 2-(N-3-sulfopropyl-N,N-dimethyl ammonium)ethyl methacrylate. The resulting white and opaque cryogels have micrometer sized pores with a smaller substructure. They adsorb methyl orange (MO) but not methylene blue (MB) from aqueous solution. Mixtures of MO and MB can be separated through selective adsorption of the MO to the cryogels while the MB remains in solution. The resulting cryogels are thus candidates for the removal of hazardous organic substances, as exemplified by MO and MB, from water. Clearly, it is possible that the cryogels are also potentially interesting for removal of other compounds such as pharmaceuticals or pesticides, but this must be investigated further.

scholarly journals Chitosan/Zeolite Composite Aerogels for a Fast and Effective Removal of Both Anionic and Cationic Dyes from Water

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1691
Author(s):  
Angela Marotta ◽  
Enrica Luzzi ◽  
Martina Salzano de Luna ◽  
Paolo Aprea ◽  
Veronica Ambrogi ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Broad Spectrum ◽  
Organic Dyes ◽  
Indigo Carmine ◽  
Zeolite 13X ◽  
Industrial Sectors ◽  
Effective Removal ◽  
Composite Aerogels ◽  
Zeolite Composite ◽  
Adsorption Desorption

Organic dyes are extensively used in many industrial sectors, and their uncontrolled disposal into wastewaters raises serious concerns for environmental and human health. Due to the large variety of such pollutants, an effective remediation strategy should be characterized by a broad-spectrum efficacy. A promising strategy is represented by the combination of different adsorbent materials with complementary functionalities to develop composite materials that are expected to remove different contaminants. In the present work, a broad-spectrum adsorbent was developed by embedding zeolite 13X powder (ZX) in a chitosan (CS) aerogel (1:1 by weight). The CS–ZX composite adsorbent removes both anionic (indigo carmine, IC) and cationic (methylene blue, MB) dyes effectively, with a maximum uptake capacity of 221 mg/g and 108 mg/g, respectively. In addition, the adsorption kinetics are rather fast, with equilibrium conditions attained in less than 2 h. The composite exhibits good mechanical properties in both dry and wet state, which enables its handling for reusability purposes. In this regard, preliminary tests show that the full restoration of the IC removal ability over three adsorption–desorption cycles is achieved using a 0.1 M NaOH aqueous solution, while a 1 M NaCl aqueous solution allows one to preserve >60% of the MB removal ability.

An Anionic Indium–Organic Framework with Spirobifluorene-Based Ligand for Selective Adsorption of Organic Dyes

2021 ◽  
Vol 60 (3) ◽  
pp. 1571-1578
Author(s):  
Xinli Shi ◽  
Yucong Zu ◽  
Shuangshuang Jiang ◽  
Fuxing Sun
Keyword(s):  
Organic Dyes ◽  
Selective Adsorption ◽  
Organic Framework
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