Ultra-fast self-healing PVA organogels based on dynamic covalent chemistry for dye selective adsorption

2019 ◽  
Vol 43 (20) ◽  
pp. 7701-7707 ◽  
Author(s):  
Shujing Ren ◽  
Panpan Sun ◽  
Aoli Wu ◽  
Na Sun ◽  
Lixin Sun ◽  
...  
Keyword(s):  
Methylene Blue ◽  
High Efficiency ◽  
Selective Adsorption ◽  
Self Healing ◽  
Dynamic Covalent Chemistry

Organogels can repair the damage rapidly, and the relative xerogels can adsorb methylene blue with high efficiency.

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.

A novel sustainable metal organic framework as the ultimate aqueous phase sensor for natural hazards: detection of nitrobenzene and F− at the ppb level and rapid and selective adsorption of methylene blue

CrystEngComm ◽  
2020 ◽  
Vol 22 (22) ◽  
pp. 3891-3909 ◽  
Author(s):  
Mantasha I. ◽  
M. Shahid ◽  
Hatem A. M. Saleh ◽  
Khalil M. A. Qasem ◽  
Musheer Ahmad
Keyword(s):  
Methylene Blue ◽  
Natural Hazards ◽  
Aqueous Phase ◽  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Sensing Properties ◽  
Metal Organic ◽  
Phase Sensor ◽  
Organic Framework

A novel metal organic framework (MOF) exhibits good aqueous phase sensing properties towards nitrobenzene and fluoride anions and selective adsorption/separation ability for methylene blue.

scholarly journals Fabrication of MoO3 Nanowire-based Membrane Devices for the Selective Adsorption of Cationic Dyes from Aqueous Solutions with High Performance and Reusability

Micromachines ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 586 ◽  
Author(s):  
Zhang ◽  
Park
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Aqueous Solutions ◽  
Rhodamine B ◽  
High Performance ◽  
Selective Adsorption ◽  
Treatment Method ◽  
Cationic Dyes ◽  
Adsorption Ability ◽  
Anionic Dye

A series of ultralong (up to tens of micrometers) MoO3 nanowire-based membranes were synthesized for the treatment of aqueous solutions containing the cationic dyes methylene blue (MB) and rhodamine B (RhB). This treatment method possesses extremely rapid and superhigh adsorbability (up to 521 and 321 mg/g for MB and RhB, respectively), as well excellent selective adsorption ability of cationic dyes with respect to the anionic dye methyl orange (MO). Moreover, the cationic dyes on the membrane can be desorbed easily, and reusability is good.

Self-healing stable polymer hydrogel for pH regulated selective adsorption of dye and slow release of graphene quantum dots

Soft Matter ◽  
2020 ◽  
Vol 16 (8) ◽  
pp. 2075-2085 ◽  
Author(s):  
Subhangi Devadarshini Sahoo ◽  
Edamana Prasad
Keyword(s):  
Quantum Dots ◽  
Slow Release ◽  
Selective Adsorption ◽  
Graphene Quantum Dots ◽  
Dye Adsorption ◽  
Cationic Dye ◽  
Self Healing ◽  
Polymer Hydrogel

Investigation of selective cationic dye adsorption by a mechanically stable and self-healable GOxAAM polymer hydrogel.

scholarly journals Evaluation of an Experimentally Designed Molecular Imprinted Polyurethane Foam Performance for Extraction of Alprazolam

2019 ◽  
Vol 57 (7) ◽  
pp. 662-670
Author(s):  
Zeynab Tavakoli ◽  
Majid Soleimani ◽  
Mir Mohammad Alavi Nikje
Keyword(s):  
Polyurethane Foam ◽  
High Efficiency ◽  
Solid Phase ◽  
Selective Adsorption ◽  
Selective Extraction ◽  
Extraction Methods ◽  
Effective Parameters ◽  
Rigid Foam ◽  
Adsorption Processes ◽  
Central Composite

Abstract Industrial polyurethane rigid foam (PUF) was selected as a substrate for selective solid phase extraction of Alprazolam. Effective parameters for raising selectivity of the PUF were evaluated. Synthetic molecularly imprinted polyurethane foam (MIPUF) was tracked as selective adsorbent and its characteristic was pondered by analytical methods. Optimization was done by central composite design (CCD) to have high efficiency of the polymer adsorption. Two different extraction methods were compared in the selective adsorption processes using MIPUF and NIPUF, batch system and continuous (cartridge) system. Results of the adsorption of alprazolam on the MIPUF had 39% more recovery than NIPUF (reference polymer). Then, the proposed method suggests a selective extraction of mentioned analyte from urine and tablets as complex matrixes.

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