A knot-linker planarity control strategy for constructing highly crystalline cationic covalent organic frameworks: decoding the effect of crystallinity on adsorption performance

2020 ◽  
Vol 8 (25) ◽  
pp. 12657-12664 ◽  
Author(s):  
Hong-Ju Da ◽  
Cheng-Xiong Yang ◽  
Hai-Long Qian ◽  
Xiu-Ping Yan
Keyword(s):  
Adsorption Capacity ◽  
Control Strategy ◽  
Covalent Organic Frameworks ◽  
High Adsorption ◽  
Adsorption Performance ◽  
High Adsorption Capacity ◽  
Fast Removal

A knot-linker planarity control strategy was developed to construct highly crystalline cationic covalent organic frameworks with C3-symmetric guanidine units for fast removal of 2,4-dichlorophenol with high adsorption capacity.

High adsorption capacity for dye removal by CuZn hydroxyl double salts

2014 ◽  
Vol 1 (2) ◽  
pp. 172-180 ◽  
Author(s):  
Shiyao Zhu ◽  
Shihui Jiao ◽  
Ziwei Liu ◽  
Guangsheng Pang ◽  
Shouhua Feng
Keyword(s):  
Ion Exchange ◽  
Adsorption Capacity ◽  
Dye Removal ◽  
Surface Adsorption ◽  
High Adsorption ◽  
Adsorption Performance ◽  
Double Salts ◽  
High Adsorption Capacity

The excellent adsorption performance of CuZn hydroxyl double salts results from both the surface adsorption and interlayer ion exchange.

CNTs synthesized with polyoxometalate-based metal–organic compounds as catalyst precursors via the CVD method and their adsorption performance towards organic dyes

2020 ◽  
Vol 44 (14) ◽  
pp. 5508-5512 ◽  
Author(s):  
Yuan Tian ◽  
Xiu-Li Wang ◽  
Jian Luan ◽  
Hong-Yan Lin ◽  
Zhi-Han Chang ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Organic Compounds ◽  
Organic Dyes ◽  
High Adsorption ◽  
Adsorption Performance ◽  
Cvd Method ◽  
Metal Organic ◽  
High Adsorption Capacity

CNTs were synthesized with POM-based compounds as catalyst precursors via the CVD method, and they possess a high adsorption capacity towards organic dyes.

Production of high-performance lead(II) ions adsorbents from pea peels waste as a sustainable resource

2020 ◽  
pp. 0734242X2094327
Author(s):  
Viktoriia Novoseltseva ◽  
Halyna Yankovych ◽  
Olena Kovalenko ◽  
Miroslava Václavíková ◽  
Inna Melnyk
Keyword(s):  
Adsorption Capacity ◽  
Energy Efficient ◽  
High Performance ◽  
Low Cost ◽  
Water Remediation ◽  
High Adsorption ◽  
Adsorption Mechanisms ◽  
Recyclable Adsorbent ◽  
High Adsorption Capacity ◽  
Fast Removal

This research deals with a highly efficient, selective, low-cost, and recyclable adsorbent for the fast removal of lead (Pb)(II) ions from aqueous solutions, and an investigation of the related adsorption mechanisms. Three types of materials were prepared from pea peels waste using simple, energy-efficient and environmentally friendly treatment. Obtained adsorbents were characterized by elemental analysis, infrared spectroscopy, scanning electron microscopy, Boehm titration, and the main parameters were determined. The highest adsorption capacity was observed for the biochar prepared by heating of pea peels at 600°C for 30 minutes. The uptake of Pb(II) ions on pea peels-derived samples was examined as a function of pH, contact time, and initial Pb2+ concentration. Obtained results from adsorption experiments of Pb(II) ions on the biochar surface indicate high adsorption capacity, and the possibility of its preconcentration and selective removal in the presence of zinc(II) and cadmium(II) ions. This confirms a potential application of such materials in water remediation.

scholarly journals Synthesis of mesoporous lanthanum hydroxide with enhanced adsorption performance for phosphate removal

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15257-15264 ◽  
Author(s):  
Kyungmin Kim ◽  
Dujin Kim ◽  
Taeyeon Kim ◽  
Bong-Geun Kim ◽  
Donghyun Ko ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Phosphate Removal ◽  
High Adsorption ◽  
Efficient Removal ◽  
Lanthanum Hydroxide ◽  
Adsorption Performance ◽  
High Adsorption Capacity ◽  
Enhanced Adsorption

MLHO exhibited outstanding phosphate removal performance with a high adsorption capacity as well as efficient removal in low P concentrations.

Covalent Organic Frameworks Constructed from Flexible Building Blocks with High Adsorption Capacity for Pollutants

2018 ◽  
Vol 1 (9) ◽  
pp. 4756-4761 ◽  
Author(s):  
Yang Li ◽  
Weiben Chen ◽  
Wenjing Hao ◽  
Yusen Li ◽  
Long Chen
Keyword(s):  
Adsorption Capacity ◽  
Building Blocks ◽  
Covalent Organic Frameworks ◽  
High Adsorption ◽  
High Adsorption Capacity

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.

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