Fabrication of Fe3O4@polydopamine@polyamidoamine core–shell nanocomposites and their application for Cu(ii) adsorption

2018 ◽  
Vol 42 (14) ◽  
pp. 12212-12221 ◽  
Author(s):  
Yukun Sun ◽  
Dongyun Li ◽  
Hui Yang ◽  
Xingzhong Guo
Keyword(s):  
Magnetic Properties ◽  
Adsorption Capacity ◽  
Core Shell ◽  
High Adsorption ◽  
High Adsorption Capacity

Fe3O4@PDA@PAMAM nanocomposites were fabricated with a polydopamine assisted method, possessing excellent magnetic properties and high adsorption capacity for Cu(ii).

scholarly journals A study on the preparation and application of a core–shell surface imprinted uranyl magnetic chelating adsorbent

RSC Advances ◽  
2018 ◽  
Vol 8 (65) ◽  
pp. 37401-37409 ◽  
Author(s):  
Gui-Rong Li ◽  
Meng-Yuan Xu ◽  
Jie-Kang Li ◽  
Yang Yang
Keyword(s):  
Adsorption Capacity ◽  
Core Shell ◽  
Surface Imprinting ◽  
High Adsorption ◽  
Shell Surface ◽  
Surface Imprinting Technique ◽  
Chelating Adsorbent ◽  
High Adsorption Capacity ◽  
Extraction Performance

A core shell UMCA was synthesized using surface imprinting technique. UMCA was used for the determination of uranyl by SPE coupled with fluorimetry. This as-prepared UMCA exhibits high adsorption capacity, good extraction performance and stability.

Fe3O4/PANI/MnO2 core–shell hybrids as advanced adsorbents for heavy metal ions

2017 ◽  
Vol 5 (8) ◽  
pp. 4058-4066 ◽  
Author(s):  
Jian Zhang ◽  
Jie Han ◽  
Minggui Wang ◽  
Rong Guo
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Adsorption Capacity ◽  
Heavy Metal Ions ◽  
Core Shell ◽  
High Adsorption ◽  
Magnetic Adsorbents ◽  
Solution Route ◽  
High Adsorption Capacity

Multifunctional magnetic adsorbents of Fe3O4/PANI/MnO2 core–shell hybrids have been developed through a facile and economic solution route, which show high adsorption capacity toward heavy metal ions.

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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