Mannitol-assisted solvothermal synthesis of BiOCl hierarchical nanostructures and their mixed organic dye adsorption capacities

CrystEngComm ◽  
2014 ◽  
Vol 16 (20) ◽  
pp. 4298-4305 ◽  
Author(s):  
Fan Tian ◽  
Jinyan Xiong ◽  
Huiping Zhao ◽  
Yunling Liu ◽  
Shengqiang Xiao ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Solvothermal Synthesis ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Organic Dye ◽  
Solvothermal Process ◽  
Hierarchical Nanostructures ◽  
Adsorption Capacities

BiOCl hierarchical nanostructures have been successfully synthesized via a facile solvothermal process with the assistance of mannitol, and exhibited excellent adsorption capacity and favorable recycling ability for mixed organic dye removal.

scholarly journals A Novel Geopolymer Foam Based On ZSM-5 Zeolite Fabricated Using Templating Emulsion/Chemical Foaming Method and Its Application in Batch and Continuous Dye Removal Systems

2022 ◽  
Author(s):  
Mahboobeh Monjezi ◽  
Vahid Javanbakht
Keyword(s):  
Adsorption Capacity ◽  
Dye Removal ◽  
Adsorption Process ◽  
Dye Adsorption ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Continuous Systems ◽  
Green Materials ◽  
Pseudo Second Order ◽  
Chemical Foaming

Abstract Geopolymers as sustainable and environmentally friendly “green materials”, can be synthesized by utilizing waste material and by-products. A porous geopolymer foam adsorbent based on ZSM-5 zeolite was prepared using templating emulsion/chemical foaming method in different conditions and used for dye removal in batch and continuous systems. The parameters affecting the dye adsorption including temperature, concentration, and pH, kinetics, isotherm, and thermodynamics of the process were investigated. The results of the geopolymer foam synthesis showed that thermal pretreatment of the zeolite has a positive effect on the strength and adsorption capacity. Moreover, the increase in sodium silicate more than the stoichiometric reduces the strength and adsorption capacity. The findings obtained from the batch adsorption process showed that the adsorption kinetics of the pseudo-second-order model and the adsorption isotherm of the Temkin model is adjusted with the experimental data. Thermodynamic results indicated that the process of dye adsorption with geopolymer foam is exothermic. The results from continuous experiments indicated more compatibility of the adsorption process with the models of Thomas and Bohart-Adams. The maximum adsorption capacity of methylene blue in batch and continuous processes was 9.82 and 8.17 mg/g. The adsorbent reduction was performed successfully by chemical and thermal processes.

scholarly journals Highly Effective Covalently Crosslinked Composite Alginate Cryogels for Cationic Dye Removal

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 178
Author(s):  
Serap Sezen ◽  
Vijay Kumar Thakur ◽  
Mehmet Murat Ozmen
Keyword(s):  
Adsorption Capacity ◽  
Dye Removal ◽  
Low Cost ◽  
Dye Adsorption ◽  
Maximum Adsorption Capacity ◽  
High Porosity ◽  
Order Model ◽  
Removal Capacity ◽  
Pseudo Second Order ◽  
The One

Currently, macroporous hydrogels have been receiving attention in wastewater treatment due to their unique structures. As a natural polymer, alginate is used to remove cationic dyes due to its sustainable features such as abundance, low cost, processability, and being environmentally friendly. Herein, alginate/montmorillonite composite macroporous hydrogels (cryogels) with high porosity, mechanical elasticity, and high adsorption yield for methylene blue (MB) were generated by the one-step cryogelation technique. These cryogels were synthesized by adding montmorillonite into gel precursor, followed by chemical cross-linking employing carbodiimide chemistry in a frozen state. The as-prepared adsorbents were analyzed by FT-IR, SEM, gel fraction, swelling, uniaxial compression, and MB adsorption tests. The results indicated that alginate/montmorillonite cryogels exhibited high gelation yield (up to 80%), colossal water uptake capacity, elasticity, and effective dye adsorption capacity (93.7%). Maximum adsorption capacity against MB was 559.94 mg g−1 by linear regression of Langmuir model onto experimental data. The Pseudo-Second-Order model was fitted better onto kinetic data compared to the Pseudo-First-Order model. Improved porosity and mechanical elasticity yielding enhanced dye removal capacity make them highly potential alternative adsorbents compared to available alginate/montmorillonite materials for MB removal.

Facile synthesis of γ-Fe2O3 nanoparticles integrated H2Ti3O7 nanotubes structure as a magnetically recyclable dye-removal catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (38) ◽  
pp. 30354-30362 ◽  
Author(s):  
Narayani Harsha ◽  
K. V. Swathi Krishna ◽  
Neeroli K. Renuka ◽  
Satyajit Shukla
Keyword(s):  
Ion Exchange ◽  
Adsorption Capacity ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Exchange Mechanism ◽  
Magnetic Nanocomposites ◽  
Fe2o3 Nanoparticles ◽  
Facile Synthesis

Magnetic nanocomposites (γ-Fe2O3 nanoparticles incorporated in H2Ti3O7 nanotubes) have been synthesized via an ion-exchange mechanism and their dye-adsorption capacity has been determined.

Solvothermal Synthesis of Flower-like BiOClxIy Solid Solution Microspheres with Excellent Organic Dye Adsorption Ability

2015 ◽  
Vol 44 (4) ◽  
pp. 506-508 ◽  
Author(s):  
Yangyang Zhang ◽  
Xiuguo Sun ◽  
Guizhen Yang ◽  
Yahui Zhu ◽  
Jianmin Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solvothermal Synthesis ◽  
Dye Adsorption ◽  
Organic Dye ◽  
Adsorption Ability

scholarly journals Solvothermal synthesis of magnetic CoFe2O4/rGO nanocomposites for highly efficient dye removal in wastewater

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 4062-4069 ◽  
Author(s):  
Wenzhu Yin ◽  
Shuo Hao ◽  
Huaqiang Cao
Keyword(s):  
Solvothermal Synthesis ◽  
Dye Removal ◽  
Organic Dyes ◽  
Environmentally Friendly ◽  
Solvothermal Process ◽  
Highly Efficient

Magnetic CoFe2O4/rGO nanocomposites were fabricated via a solvothermal process and used as environmentally-friendly adsorbents for the adsorption of organic dyes.

scholarly journals Nitrogen-doped porous carbon nanosheets derived from poly(ionic liquid)s: hierarchical pore structures for efficient CO2capture and dye removal

2016 ◽  
Vol 4 (19) ◽  
pp. 7313-7321 ◽  
Author(s):  
Jiang Gong ◽  
Huijuan Lin ◽  
Markus Antonietti ◽  
Jiayin Yuan
Keyword(s):  
Ionic Liquid ◽  
Porous Carbon ◽  
Dye Removal ◽  
Dye Adsorption ◽  
Post Treatment ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
Adsorption Capacities ◽  
Hierarchical Pore ◽  
Poly Ionic Liquid

Nitrogen-doped porous carbon nanosheets were synthesizedviaan activation- or post-treatment-free approach, which delivered high CO2and dye adsorption capacities.

scholarly journals Excellent organic dye adsorption capacity and recyclability of hydrothermally synthesized α-Fe2O3 nanoplates and nanorices

2021 ◽  
Author(s):  
Pham Kim Ngoc ◽  
Trung Kien Mac ◽  
Huu Tuan Nguyen ◽  
Do Thanh Viet ◽  
Tran Dang Thanh ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Dye Adsorption ◽  
Organic Dye
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