Graphene Oxide/ Polyacrylic acid-based double network skeleton for enhanced cationic dye adsorption

Han, Qiaoqiao; Li, Wenxiao; Zhou, Zhiyong; Zhou, Fang; Chen, Lei; Xu, Zhiwei; Qian, Xiaoming

doi:10.1080/25740881.2018.1563137

Cited by 5 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption peak at 1625 cm −1 in the GO‐VTES spectrum attributed to the stretching vibration of CO; the absorption peaks at 768 and 1408 cm −1 ascribed to the absorption of Si‐C and the asymmetric bending vibration of CH, respectively; the stretching vibrations of SiOSi were exhibited at 1126 cm −125 . It could be seen in the spectrum of GO‐PAA4 that the peak at 1404 cm −1 corresponded to the symmetrical stretching vibration of the carboxyl group in PAA 36,37 ; the peak appeared at 1630 cm −1 was ascribed to CO and OH 38,39 . These peaks at 1722 and 1630 cm −1 in the GO‐PAA spectrum were wider than the GO spectrum, indicated that GO‐PAA4 had more oxygen‐containing groups, which confirmed that PAA was grafted onto the modified GO.…”

Section: Resultsmentioning

confidence: 79%

“…the peak appeared at 1630 cm À1 was ascribed to C O and OH. 38,39 These peaks at 1722 and 1630 cm À1 in the GO-PAA spectrum were wider than the GO spectrum, indicated that GO-PAA4 had more oxygen-containing groups, which confirmed that PAA was grafted onto the modified GO. The peak appeared at 1640 cm À1 in the GO-PDDA spectrum were the stretching vibration of C N 40 ; the peak at 1415 cm À1 corresponds to the vibration of C H in N CH 3 .…”

Section: Characterization Of Membranesmentioning

confidence: 87%

See 1 more Smart Citation

Graft‐crosslinked graphene oxide nanofiltration membrane with pH‐responsive nanochannels

Wang,

Yan,

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

Electrostatic effect and Donnan effect could effectively improve the separation performance of nanofiltration membrane. Polyions were grafted from graphene oxide (GO) nanosheets to prepare the nanofiltration membrane, and the electrostatic effect and Donnan effect in the membrane pores could be greatly improved. The GO was modified by introducing double bonds. Then, polyanionic poly(acrylic acid) (PAA) and polycationic diallyldimethylammonium chloride (PDDA) were grafted from GO nanosheets, which were employed to fabricate the nanofiltration membranes, respectively. Therefore, nanofiltration membranes GO‐PAA and GO‐PDDA with cross‐linked structure and pH responsiveness were prepared. The separation effect of the anionic dyes was over 99%, and the membrane had perfect adsorption effect on cationic dyes. The cross‐linked structure formed between GO nanosheets inhibited the change of the interlayer spacing of the nanofiltration membrane. The conformation of the graft chains could be adjusted by the pH value of the solution, by adjusting the size of the nanochannel. The rejection rates of the nanofiltration membranes for the cationic dyes could reach more than 98%, and the membrane had perfect adsorption effect on anionic dyes. Similar to the grafted polyanion, the grafted polycation also formed a cross‐linked structure between the graphene nanosheets, thereby inhibiting the change of the nanochannels with the pH value to a certain extent. Polyionic nanofiltration membranes have excellent selectivity and could be widely used in the treatment of dye wastewater and other fields.

show abstract

Section: Resultsmentioning

confidence: 79%

Section: Characterization Of Membranesmentioning

confidence: 87%

Graft‐crosslinked graphene oxide nanofiltration membrane with pH‐responsive nanochannels

Wang,

Yan,

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

show abstract

“…Graphene aerogels can be used as adsorption materials because of their high specific surface areas, high porosities, and hydrophobicity. Combining them with functional polymers can further improve the adsorption capacity and efficiency [127][128][129][130][131][132]. For example, Zhang et al [133] reported a dimethyldiallylammonium chloride acrylamide polymer (P(AM-DMDAAC))/graphene aerogel (PGA) with high adsorption capacity and high hydrophobicity by one-step hydrothermal treatment of doping P(AM-DMDAAC) into graphene aerogel.…”

Section: Adsorption Properties and Applicationsmentioning

confidence: 99%

A Review of Graphene-Based Materials/Polymer Composite Aerogels

et al. 2023

View full text Add to dashboard Cite

The fabrication of composite materials is an effective way to improve the performance of a single material and expand its application range. In recent years, graphene-based materials/polymer composite aerogels have become a hot research field for preparing high-performance composites due to their special synergistic effects in mechanical and functional properties. In this paper, the preparation methods, structures, interactions, properties, and applications of graphene-based materials/polymer composite aerogels are discussed, and their development trend is projected. This paper aims to arouse extensive research interests in multidisciplinary fields and provide guidance for the rational design of advanced aerogel materials, which could then encourage efforts to use these new kinds of advanced materials in basic research and commercial applications.

show abstract

“…When GO was reinforced by agar in the agar/GO aerogel through hydrogen bonds combined with dehydration in the interaction between oxygen-containing functional groups on agar and GO during hydrogel preparation, the adsorption efficiency of the agar/GO composite aerogel (AGO) was increased to 578 mg/g according to Chen et al The porous GO/polyacrylic acid aerogel was polymerized to remove MB, crystal violet (CV), methyl orange (MO), and rhodamine B from wastewater. It exhibited significant adsorption capacities for CV and MB of about 851.31 and 771.14 mg g –1 , respectively . On the other hand, regenerated cellulose combined with GO (0.5 %wt) was initially shown to be effective in improving the adsorption on MB at concentrations of 5–40 mg/L.…”

Section: Introductionmentioning

confidence: 99%

“…It exhibited significant adsorption capacities for CV and MB of about 851.31 and 771.14 mg g –1 , respectively. 44 On the other hand, regenerated cellulose combined with GO (0.5 %wt) was initially shown to be effective in improving the adsorption on MB at concentrations of 5–40 mg/L. This aerogel has a good stable adsorption rate at 90.5% after being used five times under oscillatory adsorption.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose and Graphene Oxide Aerogels for Adsorption and Removal Methylene Blue from an Aqueous Environment

Nguyen

et al. 2021

ACS Omega

View full text Add to dashboard Cite

The characteristics of aerogel materials such as the low density and large surface area enable them to adsorb large amounts of substances, so they show great potential for application in industrial wastewater treatment. Herein, using a combination of completely environmentally friendly materials such as cellulose nanofibers (CNFs) extracted from the petioles of the nipa palm tree and graphene oxide (GO) fabricated by simple solvent evaporation, a composite aerogel was prepared by a freeze-drying method. The obtained aerogel possessed a light density of 0.0264 g/cm 3 and a porosity of more than 98.2%. It was able to withstand a weight as much as 2500 times with the maximum force (1479.5 N) to break up 0.2 g of an aerogel by compression strength testing and was stable in the aquatic environment, enabling it to be reused five times with an adsorption capacity over 90%. The CNF/GO aerogel can recover higher than 85% after 30 consecutive compression recovery cycles, which is convenient for the reusability of this material in wastewater treatments. The obtained aerogel also showed a good interaction between the component phases, a high thermal stability, a 3D network structure combined with thin walls and pores with a large specific surface area. In addition, the aerogel also exhibited a fast adsorption rate for methylene blue (MB) adsorption, a type of waste from the textile industry that pollutes water sources, and it can adsorb more than 99% MB in water in less than 20 min. The excellent adsorption of MB onto the CNF/GO aerogel was driven by electrostatic interactions, which agreed with the pseudo-second-order kinetic model with a correlation coefficient R 2 = 0.9978. The initial results show that the CNF/GO aerogel is a highly durable “green” light material that might be applied in the treatment of domestic organic waste water and is completely recoverable and reusable.

show abstract

Graphene Oxide/ Polyacrylic acid-based double network skeleton for enhanced cationic dye adsorption

Cited by 5 publications

References 37 publications

Graft‐crosslinked graphene oxide nanofiltration membrane with pH‐responsive nanochannels

Graft‐crosslinked graphene oxide nanofiltration membrane with pH‐responsive nanochannels

A Review of Graphene-Based Materials/Polymer Composite Aerogels

Nanocellulose and Graphene Oxide Aerogels for Adsorption and Removal Methylene Blue from an Aqueous Environment

Contact Info

Product

Resources

About