A novel<i>O</i>‐carboxymethyl chitosan‐based hydrogel of an outstanding adsorption performance for removal of cationic Basic Red 12 dye from its aqueous solution

Al‐Harby, Nouf F.; Almutairi, Ruwayda S.; Elmehbad, Noura Y.; Mohamed, Nadia A.

doi:10.1002/pen.26380

Cited by 10 publications

(1 citation statement)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be noted that the adsorption capacity, q e , at pH 9 (the basic medium) was higher than that at pH 7 and 4 (the neutral and the acidic media). This can be attributed to the fact that, in the basic medium, the deprotonated -COOH and −OH groups electrostatically interacted with the cationic groups of CV dye [34,35], in addition to π-π stacking resulting from the interaction between the π bonds of the aromatic rings of CV dye and the π bonds of the aromatic rings of the cross-linking moieties, leading to a synergistic effect by which CV dye was adsorbed onto the prepared hydrogels, as shown in Scheme 2. It is worth mentioning that the pHzpc value suggests that the surface of the adsorbent have negative charges at high pH values) online Supplemental File-S2).…”

Section: Removal Of the Cr And CV Dyesmentioning

confidence: 99%

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Alfuraydi,

Al-Harby,

Alminderej

et al. 2023

Gels

Self Cite

View full text Add to dashboard Cite

In our previous work, three different weight ratios of chitosan/PVA (1:3, 1:1, and 3:1) were blended and then cross-linked with trimellitic anhydride isothiocyanate (TAI) at a concentration depending on their chitosan content, obtaining three hydrogels symbolized by H13, H11, and H31. Pure chitosan was cross-linked with TAI, producing a hydrogel symbolized by H10. Further, three H31-based silver nanoparticles composites (H31/AgNPs1%, H31/AgNPs3%, and H31/AgNPs5%) were also synthesized. They were investigated, for the first time in this study, as adsorbents for Congo Red (CR) and Crystal Violet (CV) dyes. The removal efficiency of CR dye increased with increasing H10 content in the hydrogels, and with increasing AgNP content in the composites, reaching 99.91% for H31/AgNPs5%. For CV dye, the removal efficiency increased with the increase in the PVA content. Furthermore, the removal efficiency of CV dye increased with an increasing AgNP content, reaching 94.7% for H31/AgNPs5%. The adsorption capacity increased with the increase in both the initial dye concentration and temperature, while with an increasing pH it increased in the case of CV dye and decreased in the case of CR dye. The adsorption of CV dye demonstrated that the Freundlich isotherm model is better suited for the experimental results. Moreover, the results were best fitted with pseudo-second-order kinetic model.

show abstract

Section: Removal Of the Cr And CV Dyesmentioning

confidence: 99%

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Alfuraydi,

Al-Harby,

Alminderej

et al. 2023

Gels

Self Cite

View full text Add to dashboard Cite

show abstract

Poly(vinylidene fluoride‐hexafluoropropylene)/mesoporous graphitic carbon nitride composite membranes for photocatalytic methylene blue degradation and sensing applications

Sharma,

Kumar,

Yadav

2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

In this work, poly(vinylidene fluoride‐hexafluoropropylene) (PVDF‐HFP)/mesoporous graphitic carbon nitride (mpg‐C3N4) composite fiber web have been prepared and characterized for photocatalytic methylene blue (MB) degradation and sensing applications. The electrospinning technique, operating at a flow rate of 1 mL/h and a voltage of 15 kV, was utilized to prepare the composite membranes of PVDF‐HFP with the uniform distribution of the mpg‐C3N4. The composite web demonstrated outstanding photocatalytic activity for the degradation of MB, reaching a quick 68% drop in MB concentration in just 45 min. The composite web furthermore worked as a sensor for MB detection. After MB exposure, the film resistance was increased, suggesting its potential as a chemiresistive sensor. The maximum resistivity of PVDF‐HFP/mpg‐C3N4 composites was found to be 90 Ω·m at 2% concentration of MB. The MB molecules' adsorption on the surface of the composite web and the existence of photocatalytic byproducts on the surface may be responsible for this shift in resistance. This dual functionality highlights the adaptability and potential of the PVDF‐HFP/mpg‐C3N4 composite web as a versatile material for environmental sensing and cleanup. This research presents a comprehensive approach to the synthesis, characterization, and evaluation of such flexible membranes for potential applications as self‐cleaning devices and chemiresistive sensor.Highlights PVDF‐HFP/mpg‐C3N4 composite membranes act as an efficient material for MB degradation (68%) with visible light exposure. mpg‐C3N4 plays the role of active material in degradation. PVDF‐HFP/mpg‐C3N4 composite membrane also act as sensors for MB detection. Composite membrane becomes chemiresistive due to notable resistivity changes with MB concentration.

show abstract

Synthesis of Novel Antimicrobial and Food‐Preserving Hydrogel Nanocomposite Films Based on Carboxymethylcellulose

Elmehbad,

Mohamed,

El‐Ghany

2024

Starch Stärke

Self Cite

View full text Add to dashboard Cite

The microbial resistance to the traditional antibiotics causes serious health problems and increases day by day. Thus, there is a pressing need to discover alternative antimicrobial agents of different nature than that of the conventional antibiotics. For this, novel hydrogel nanocomposite films are prepared by chemical crosslinking grafting of carboxymethyl cellulose with N,N′‐methylene‐bis‐acrylamide (CMC‐g‐MBA), which subsequently followed by loading two different weight ratios of titanium oxide nanoparticles (TiO2NPs), such as 3% (CMC‐g‐MBA/TiO2NPs‐3%) and 5% (CMC‐g‐MBA/TiO2NPs‐5%) wt%. Their chemical structure and surface morphology are confirmed using appropriate analytical techniques. Their antimicrobial activity can be arranged as follows: CMC‐g‐MBA/TiO2NPs‐5% composite > CMC‐g‐MBA/TiO2NPs‐3% composite > CMC‐g‐MBA hydrogel. While, the native CMC has no observable antimicrobial effect. CMC‐g‐MBA/TiO2NPs‐3% composite imparts good barrier properties to the coated tomato fruits, delaying their spoilage and protecting them from the environmental microbes compared to the uncoated ones. CMC‐g‐MBA/TiO2NPs‐5% composite is safe on the normal human cells. Thus, incorporation of both MBA and TiO2NPs into CMC greatly develops its antimicrobial activity and provides a wonderful approach to attain promising materials that can efficiently compete with conventional antibiotics.

show abstract

A novelO‐carboxymethyl chitosan‐based hydrogel of an outstanding adsorption performance for removal of cationic Basic Red 12 dye from its aqueous solution

Cited by 10 publications

References 67 publications

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Poly (Vinyl Alcohol) Hydrogels Boosted with Cross-Linked Chitosan and Silver Nanoparticles for Efficient Adsorption of Congo Red and Crystal Violet Dyes

Poly(vinylidene fluoride‐hexafluoropropylene)/mesoporous graphitic carbon nitride composite membranes for photocatalytic methylene blue degradation and sensing applications

Synthesis of Novel Antimicrobial and Food‐Preserving Hydrogel Nanocomposite Films Based on Carboxymethylcellulose

Contact Info

Product

Resources

About