Adsorption behavior of magnetic amino-functionalized metal–organic framework for cationic and anionic dyes from aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48884-48895 ◽  
Author(s):  
Haochi Liu ◽  
Ligang Chen ◽  
Jie Ding
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Electrostatic Interaction ◽  
Metal Organic Framework ◽  
Adsorption Behavior ◽  
Anionic Dyes ◽  
Stacking Interaction ◽  
Π Stacking ◽  
Metal Organic ◽  
Π Stacking Interaction

The mechanisms of interactions such as electrostatic interaction, hydrogen bonding, and π–π stacking interaction were discussed for the adsorption of cationic and anionic dyes onto magnetic NH2-MIL-101(Al).

Synthesis of metal organic framework modified with carboxylated attapulgite and adsorption properties for organic dye

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Fanhua Wu ◽  
Yuyu Zhang ◽  
Tao Li ◽  
Yongfeng Liu ◽  
Yi Liu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hybrid Materials ◽  
Congo Red ◽  
Metal Organic Framework ◽  
Adsorption Efficiency ◽  
Anionic Dyes ◽  
Content Type ◽  
Low Concentration ◽  
Metal Organic ◽  
The Cost

Purpose The purpose of this study was to prepare carboxylated attapulgite (APT-COOH) and then be used as one of the ligands to prepare metal organic framework (MOF) hybrid materials to reduce the cost of MOF materials and improve the dispersed condition of APT. And then the materials were used to enrich anionic dye Congo red from aqueous solution. Design/methodology/approach The MOF hybrid materials were designed by means of facile reflux method rather than hydrothermal method, characterized by Thermogravimetric Analysis (TGA), Fourier Transform Infrared (FTIR) Spectrometer and pore structure. The dispersed degree of APT-COOH in the MOF materials was validated according to adsorption efficiency for Congo red. Findings Due to introduction of APT-COOH, the microenvironment of the MOF materials changed, leading to different adsorption behaviors. Compared to the MOF material without APT-COOH, the adsorption capacities of the hybridized MOF materials with different amounts of APT-COOH introduced increased by 4.58% and 15.55%, respectively, as the initial concentration of Congo red solution of 300 mg/L. Meantime, hybridized MOF materials were suitable to remove Congo red with low concentration, while the MOF material without APT-COOH was appropriate to enrich Congo red with high concentration. Research limitations/implications The microstructure of MOF hybrid materials in detail is the further and future investigation. Practical implications This study will provide a method to reduce the cost of MOF materials and a theoretical support to treat anionic dyes from aqueous solution. Originality/value APT-COOH was prepared and used as one of the ligands to synthesize MOF material to improve the dispersed degree of APT-COOH and reduce the cost of the MOF materials. The adsorption efficiency was greatly enhanced with low concentration of Congo red solution, and the results indicated that hydrogen bonding, electrostatic interaction, and p-p conjugation were involved in the adsorption process. The prepared MOFs materials exhibited excellent adsorption efficiency, which made the present materials highly promising and potentially useful in practical application as adsorbents to enrich anionic dyes such as Congo red from aqueous solution.

The effect of π-π stacking interaction on hydrogen bonding in a molecular seesaw balance: A NMR study

2018 ◽  
Vol 708 ◽  
pp. 159-164 ◽  
Author(s):  
Alireza Gholipour ◽  
Mahboubeh Abolhassanzadeh Parizi ◽  
Razieh Sadat Neyband
Keyword(s):  
Hydrogen Bonding ◽  
Stacking Interaction ◽  
Π Stacking ◽  
Nmr Study ◽  
Π Stacking Interaction

A novel supramolecular AIE π-gel for fluorescence detection and separation of metal ions from aqueous solution

Soft Matter ◽  
2019 ◽  
Vol 15 (32) ◽  
pp. 6530-6535 ◽  
Author(s):  
Tai-Bao Wei ◽  
Qin-Peng Zhang ◽  
Yan-Qing Fan ◽  
Peng-Peng Mao ◽  
Jiao Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Metal Ions ◽  
Fluorescence Detection ◽  
Hydrogen Bonding Interaction ◽  
Stacking Interaction ◽  
Separation Of Metal Ions ◽  
Bonding Interaction ◽  
Π Stacking Interaction ◽  
Detection And Separation

A novel supramolecular AIE π-gel (ONT) is constructed using a π–π stacking interaction and hydrogen bonding interaction, which could efficiently detect and separate metal ions.

Zeolitic imidazolate metal organic framework ZIF-8 with ultra-high adsorption capacity bound tetracycline in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 82127-82137 ◽  
Author(s):  
Chun-sheng Wu ◽  
Zhen-hu Xiong ◽  
Chen Li ◽  
Jin-miao Zhang
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Metal Organic Framework ◽  
Electrostatic Attraction ◽  
High Adsorption ◽  
Synthetic Process ◽  
Metal Organic ◽  
Π Stacking Interaction ◽  
High Adsorption Capacity ◽  
Capacity Bound

Synthetic process of ZIF-8 and a mechanism of tetracycline bound to ZIF-8 due to electrostatic attraction and π–π stacking interaction.

scholarly journals Theoretical hydrogen bonding calculations and proton conduction for Eu(iii)-based metal–organic framework

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11495-11499
Author(s):  
Lu Feng ◽  
Tian-Yu Zeng ◽  
Hao-Bo Hou ◽  
Hong Zhou ◽  
Jian Tian
Keyword(s):  
Hydrogen Bonding ◽  
Theoretical Calculation ◽  
Proton Transport ◽  
Metal Organic Framework ◽  
Proton Conduction ◽  
Transport Channel ◽  
Proton Conducting ◽  
Metal Organic ◽  
Organic Framework

A water-mediated proton-conducting Eu(iii)-MOF has been synthesized, which provides a stable proton transport channel that was confirmed by theoretical calculation.

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