Nanosponges based on self-assembled starfish-shaped cucurbit[6]urils functionalized with imidazolium arms

2021 ◽  
Author(s):  
Vincenzo Patamia ◽  
Davide Gentile ◽  
Roberto Fiorenza ◽  
Vera Muccilli ◽  
Placido Mineo ◽  
...  
Keyword(s):  
Porous Material ◽  
Porous Structure ◽  
Adsorption Capacity ◽  
High Adsorption ◽  
High Adsorption Capacity ◽  
Self Assembled

New porous material based on the first supramolecular cucurbituril-based nanosponge was synthetized by the functionalization of cucurbit[6]uril with twelve 1-(2-bromoethyl)-3-methyl-1H-imidazol-3-ium arms. The porous structure and the high adsorption capacity were...

Self-assembled three-dimensional graphene-based materials for dye adsorption and catalysis

2015 ◽  
Vol 3 (18) ◽  
pp. 10031-10037 ◽  
Author(s):  
Xueping Zhang ◽  
Dong Liu ◽  
Lu Yang ◽  
Limin Zhou ◽  
Tianyan You
Keyword(s):  
Adsorption Capacity ◽  
Self Assembly ◽  
Three Dimensional ◽  
Dye Adsorption ◽  
Reduction Process ◽  
High Adsorption ◽  
Graphene Aerogel ◽  
High Adsorption Capacity ◽  
Self Assembled

Graphene aerogel (GA) fabricated via a simultaneous self-assembly and reduction process showed high adsorption capacity towards dyes.

A novel MOF/graphene oxide composite GrO@MIL-101 with high adsorption capacity for acetone

2014 ◽  
Vol 2 (13) ◽  
pp. 4722-4730 ◽  
Author(s):  
Xin Zhou ◽  
Wenyu Huang ◽  
Jiao Shi ◽  
Zhenxia Zhao ◽  
Qibin Xia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Porous Structure ◽  
Adsorption Capacity ◽  
High Adsorption ◽  
Oxide Composite ◽  
Adsorption Interaction ◽  
Acetone Adsorption ◽  
High Adsorption Capacity

The composite of MIL-101 and graphene oxide with remarkably improved acetone adsorption capacity was prepared. This composite exhibited enhanced porous structure and stronger adsorption interaction towards adsorbate. The mechanism of such improvement was discussed. Acetone adsorption on this composite was highly reversible.

Mercury Removal from Wastewater by Steamed Hoof Powder

1999 ◽  
Vol 40 (7) ◽  
pp. 109-116 ◽  
Author(s):  
M. H. Ansari ◽  
A. M. Deshkar ◽  
P. S. Kelkar ◽  
D. M. Dharmadhikari ◽  
M. Z. Hasan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Adsorption Equilibrium ◽  
Light Metal ◽  
Mercury Removal ◽  
High Adsorption ◽  
Surface Sites ◽  
Ph Values ◽  
High Adsorption Capacity

Steamed Hoof Powder (SHP), size < 53μ, was observed to have high adsorption capacity for Hg(II) with >95% removal from a solution containing 100 mg/L of Hg(II) with only 0.1% (W/V) concentration of SHP. The SHP has good settling properties and gives clear and odour free effluent. Studies indicate that pH values between 2 and 10 have no effect on the adsorption of Hg(II) on SHP. Light metal ions like Na+, K+, Ca2+ and Mg2+ up to concentrations of 500 mg/L and heavy metals like Cu2+, Zn2+, Cd2+, Co2+, Pb2+, Ni2+, Mn2+, Cr3+, Cr6+, Fe2+ and Fe3+ up to concentrations of 100 mg/L do not interfere with the adsorption process. Anions like sulphate, acetate and phosphate up to concentrations of 200 mg/L do not interfere. Chloride interferes in the adsorption process when Hg(II) concentration is above 9.7 mg/L. The adsorption equilibrium was established within two hours. Studies indicate that adsorption occurs on the surface sites of the adsorbent.

scholarly journals Effective Poly (Cyclotriphosphazene-Co-4,4′-Sulfonyldiphenol)@rGO Sheets for Tetracycline Adsorption: Fabrication, Characterization, Adsorption Kinetics and Thermodynamics

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1540
Author(s):  
Muhammad Ahmad ◽  
Tehseen Nawaz ◽  
Mohammad Mujahid Alam ◽  
Yasir Abbas ◽  
Shafqat Ali ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
High Adsorption ◽  
Clean Environment ◽  
Equilibrium Data ◽  
Langmuir Isotherm Model ◽  
High Adsorption Capacity ◽  
Adsorption Equilibrium Data

The development of excellent drug adsorbents and clarifying the interaction mechanisms between adsorbents and adsorbates are greatly desired for a clean environment. Herein, we report that a reduced graphene oxide modified sheeted polyphosphazene (rGO/poly (cyclotriphosphazene-co-4,4′-sulfonyldiphenol)) defined as PZS on rGO was used to remove the tetracycline (TC) drug from an aqueous solution. Compared to PZS microspheres, the adsorption capacity of sheeted PZS@rGO exhibited a high adsorption capacity of 496 mg/g. The adsorption equilibrium data well obeyed the Langmuir isotherm model, and the kinetics isotherm was fitted to the pseudo-second-order model. Thermodynamic analysis showed that the adsorption of TC was an exothermic, spontaneous process. Furthermore, we highlighted the importance of the surface modification of PZS by the introduction of rGO, which tremendously increased the surface area necessary for high adsorption. Along with high surface area, electrostatic attractions, H-bonding, π-π stacking and Lewis acid-base interactions were involved in the high adsorption capacity of PZS@rGO. Furthermore, we also proposed the mechanism of TC adsorption via PZS@rGO.

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