Facile preparation of polyacrylamide/chitosan/Fe3O4 composite hydrogels for effective removal of methylene blue from aqueous solution

Cheng, Zhang; Dai, Yankai; Wu, Yue‐Hong; Lu, Gang; Cao, Zheng; Cheng, Jiping; Wang, Kailun; Yang, Hanxi; Xia, Yong; Wen, Xiaoqian; Ma, Wenzhong; Li, Chunlin; Wang, Zhaoli

doi:10.1016/j.carbpol.2020.115882

Cited by 111 publications

(37 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prepared clay/magnetic hydrogel nanocomposites exhibited an adsorption capacity of 1081.60 mg/ g, which is low when compared to the adsorption capacity (1109.55 mg/g) of pure hydrogel. 201 Surprisingly, Zhang et al 202 prepared PAAm/CS/Fe 3 O 4 composite hydrogel via in situ polymerization for the removal of MB dye from aqueous solution, and the obtained results demonstrated that the incorporation of Fe 3 O 4 magnetic nanoparticles in the hydrogel matrices improved both swelling and adsorption capacity. 202 Another study by Makhado et al, 182 synthesized sodium alginate/ZnO hydrogel nanocomposites by the…”

Section: Preparation Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Malatji

Makhado

Modibane

et al. 2021

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

Water pollution by organic dyes continues to pose a serious health and environmental threat to the ecosystem. Although adsorption using biopolymer-based hydrogels has proven to be an ideal technique for the treatment of these dye contaminants from aqueous solutions, these hydrogels suffer from lack of mechanical stability and recovery as compared to synthetic polymers. Herein, we review the low-cost synthesis of hydrogel incorporated with inorganic components mainly focusing on strategies to improve the mechanical stability and separation of the hydrogel in removing methylene blue (MB) dye from aqueous solution. The literature shows that hydrogel nanocomposites are a class of materials that have flourished significant consideration, especially concerning water treatment. In adsorption technology, hydrogel nanocomposites act as absorbents, prominent to enhance their removal efficiency towards contaminants. This review highlights the preparation and use of hydrogel nanocomposites as efficient adsorbents. In-depth discussions on adsorption and diverse synthetic routes of hydrogels have been devoted to applications of these nanocomposites and are compared in this contribution to the removal efficiency of MB dye from wastewater.

show abstract

Section: Preparation Methodsmentioning

confidence: 99%

“…182 Table 6 shows the advantages and disadvantages of variously reported hydrogel nanocomposites in the removal of MB from wastewater. [199][200][201][202][203][204][205]…”

Section: Swelling Capacity 205mentioning

confidence: 99%

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Malatji

Makhado

Modibane

et al. 2021

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Utilization of chitosan as catalyst support has attracted profound attention due to its signicant properties such as low cost, resource abundance, hydrophilicity, chemical stability, eco-friendliness, biodegradability, non-toxicity, signicant thermal stability, and antioxidant properties. [8][9][10][11] In addition, the presence of NH 2 and OH functional groups produces appropriate arrangements such as chelating ligands to coordinate various metal ions 9 (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

2021

View full text Add to dashboard Cite

show abstract

“…The AC powder can be immobilized in the hydrogels without dispersing in the water or impeding the adsorption of AC to the dyes. 23 , 24 …”

Section: Introductionmentioning

confidence: 99%

Recycling of Waste Cotton Sheets into Three-Dimensional Biodegradable Carriers for Removal of Methylene Blue

2021

View full text Add to dashboard Cite

Waste cotton sheets (WCS) are promising cellulose sources due to their high content of cellulose and large amount of disposal every year, which could be recycled and employed as low-cost structural materials. The present work aims at investigating the efficacy of hydrogel adsorbents prepared from regenerated WCS as the carriers of activated carbon (AC) for treating the dye-contaminated water. Activated WCS was directly dissolved in lithium chloride/ N , N -dimethylacetamide (LiCl/DMAc) solvent and then regenerated into cellulose hydrogels, which were employed as three-dimensional biodegradable matrices for loading an extremely high content of AC (up to 5000%). The morphology and properties of resultant adsorbents were studied in detail. The results showed that different washing methods and contents of AC and cellulose had obvious effects on water contents, mechanical properties, and adsorption capacities of AC/WCS hydrogels. Especially, the hydrogels containing high AC content washed by gradient ethanol solvent exhibited outstanding compressive strengths of up to 3.0 MPa at 60% strain, while the adsorption capacity of 5000%AC/0.3CS toward a model dye methylene blue (MB, initial concentration of 200 mg/L) reached 174.71 mg/g at pH 6.9 and 35 °C. This was comparable to the adsorption capacity of original AC powders, while no AC powders were released from hydrogels to water. The adsorption of MB followed the Dubinin–Astakhov model and pseudo-first-order mechanism. Thermodynamic studies showed the spontaneous and endothermic nature of the overall physical adsorption process. Therefore, this work demonstrates the feasibility to recycle WCS into biodegradable carriers of functional compounds, and the AC/regenerated cellulose hydrogels have a high potential as a promising adsorbent with low-cost and convenient separation for dye removal from wastewater.

show abstract

Facile preparation of polyacrylamide/chitosan/Fe3O4 composite hydrogels for effective removal of methylene blue from aqueous solution

Cited by 111 publications

References 55 publications

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

Recycling of Waste Cotton Sheets into Three-Dimensional Biodegradable Carriers for Removal of Methylene Blue

Contact Info

Product

Resources

About

Facile preparation of polyacrylamide/chitosan/Fe3O4 composite hydrogels for effective removal of methylene blue from aqueous solution

Cited by 111 publications

References 55 publications

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

Removal of methylene blue from wastewater using hydrogel nanocomposites: A review

La(OH)3 nanoparticles immobilized on Fe3O4@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

Recycling of Waste Cotton Sheets into Three-Dimensional Biodegradable Carriers for Removal of Methylene Blue

Contact Info

Product

Resources

About

La(OH)₃ nanoparticles immobilized on Fe₃O₄@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde