A novel adsorbent based on magnetic Fe 3 O 4 contained polyvinyl alcohol/chitosan composite nanofibers for chromium (Ⅵ) removal

Yan, Eryun; Cao, Minglu; Jiang, Jinyu; Gao, Junkai; Jiang, Congcheng; Ba, Xuewei; Yang, Xiaojing; Zhang, Deqing

doi:10.1016/j.solidstatesciences.2017.08.014

Cited by 33 publications

(5 citation statements)

References 18 publications

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“…This results are consistent with the TGA results of the nanoparticles. It is clear that SPIONs/gel and SPIONs/gel/PVA samples can be easily separated from aqueous solution by applying an external magnetic field [ 14 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Anudari

Yin

et al. 2018

Molecules

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Super-paramagnetic iron oxide nanoparticles (SPIONs)/gelatin (gel)/polyvinyl alcohol (PVA) nanoparticles were designed and synthesized by the co-precipitation method and further modified with gel and PVA. These nanoparticles were used for the removal of Cu(II) and Zn(II) from aqueous solutions. The adsorbents were rich in different functional groups for chemisorption and showed effective adsorption properties. The adsorption of Cu(II) and Zn(II) on the SPIONs/gel and SPIONs/gel/PVA materials were investigated with respect to pH, adsorption kinetics, and adsorption isotherms. The adsorption data was fitted to the Langmuir, Freundlich, and Sips models at the optimum pH 5.2 (±0.2) over 60 min; SPIONs/gel showed maximum adsorption capacities of 47.594 mg/g and 40.559 mg/g for Cu(II) and Zn(II); SPIONs/gel/PVA showed those of 56.051 mg/g and 40.865 mg/g, respectively. The experimental data fitted the pseudo-second-order model, indicating that the process followed chemical monolayer adsorption. In addition, the SPIONs/gel/PVA showed better stability and Cu(II) adsorption efficiency than SPIONs/gel.

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Section: Resultsmentioning

confidence: 99%

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Anudari

Yin

et al. 2018

Molecules

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“…3(d)), and connected fibre mesh structures. [19][20][21][22] The various morphologies provide different characteristics, such as hydrophobicity and mechanical properties. Superhydrophobicity is caused by the huge specific surface area of the fibrous mesh membrane.…”

Section: Electrospinning Methods and Fibre Structuresmentioning

confidence: 99%

A review on electrospun magnetic nanomaterials: methods, properties and applications

et al. 2021

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“…Sau thời gian ∆t, mẫu được lấy ra và lau sạch bề mặt bằng vải khô rồi cân lại khối lượng mẫu W s (ASTM D570-98). Công thức tính tỷ lệ trương nước được tính như sau (Song et al, 2020): Đánh giá khả năng hấp phụ ion Cu(II) của hydrogel với các nồng độ dung dịch ban đầu khác nhau được khảo sát với mô hình đẳng nhiệt Langmuir (3) và Freundlich (4) (Yan et al, 2019).…”

Section: Khảo Sát độ Trương Nướcunclassified

Khảo sát khả năng hấp phụ ion Cu (II) bằng hydrogel trên cơ sở Poly(vinyl alcohol)/ chitosan/carbon

Bui¹,

Nguyen²,

Ha³

et al. 2023

CTUJSVN

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– Hydrogels have attracted the attention of domestic and foreign researchers due to their outstanding properties such as simple fabrication and diverse applications in many fields. In this study, hydrogels were synthesized from polyvinyl alcohol (PVA), chitosan (CS), and activated carbon (AC) towards removing copper ions from wastewater. The characteristic properties of hydrogels were investigated by analytical methods, including infrared spectroscopy (FTIR), X-ray diffraction (XRD), water swelling behavior, and Cu (II) ion adsorption capacity. The maximum water swelling capacity of the hydrogel was 497.1% when the active carbon content in the hydrogel sample was 2 wt%. The Langmuir and Freundlich isotherm models were used in the study to evaluate the Cu (II) ion adsorption capacity of the hydrogel and the experimental parameters of the survey process completely matched the model. The PVA/chitosan/active carbon hydrogel achieved a maximum Cu (II) ion adsorption of 212.766 mg/g in neutral medium.

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A novel adsorbent based on magnetic Fe 3 O 4 contained polyvinyl alcohol/chitosan composite nanofibers for chromium (Ⅵ) removal

Cited by 33 publications

References 18 publications

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

Adsorption of Cu(II) and Zn(II) Ions from Aqueous Solution by Gel/PVA-Modified Super-Paramagnetic Iron Oxide Nanoparticles

A review on electrospun magnetic nanomaterials: methods, properties and applications

Khảo sát khả năng hấp phụ ion Cu (II) bằng hydrogel trên cơ sở Poly(vinyl alcohol)/ chitosan/carbon

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