Remediation of Astrazon blue and Lerui acid brilliant blue dyes from waste solutions using amphoteric superparamagnetic nanocomposite hydrogels based on chitosan prepared by gamma rays

Ali, Hussein E.; Nasef, Shaimaa M.; Gad, Yasser H.

doi:10.1016/j.carbpol.2022.119149

Cited by 29 publications

(12 citation statements)

References 68 publications

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“…most practical and feasible solution (Ali et al 2022). Green sorbents have been introduced as effective alternatives to petroleum-based sorbents (Al-Qudah et al 2022;Teng et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Sayed

Mazrouaa

Mohamed

et al. 2022

Environ Sci Pollut Res

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In this study, chitosan (Ch) is adapted via green methodology including sonication induced crosslinking with different weight ratios of erythritol (Er) from (Ch-Er)1 to (Ch-Er)4. The products were casted in the form of thin films. The chemical modification was proved via FTIR spectroscopy. Then, the modified products were verified via an atomic force microscopy (AFM) investigation for their topography and surface properties. The data revealed that the optimized sample was (Ch-Er)3. This sample was further modified by different weight ratios of graphene oxide 0.1, 0.2, 0.4, and 0.8 wt./wt. (symbolized as (Ch-Er)3GO1, (Ch-Er)3GO2, (Ch-Er)3GO4, and (Ch-Er)3GO8 respectively). The prepared samples were investigated by different analytical tools. Then, the adjusted sample (Ch-Er)3GO2 was irradiated by electron beam (e-beam) at 10 and 20 kGy of irradiation doses to give samples (Ch-Er)3GO2R10 and (Ch-Er)3GO2R20, respectively. The AFM data of the irradiated samples showed that the pore size decreases, and surface roughness increases at higher energy e-beam due to the formation of more crosslinking points. The optimum samples of the prepared formulations were tested as sorbent materials for simultaneous elimination of methylene blue (MB) dye and mercury cation (Hg2+) from simulated solutions. The maximum removal of both MB dye and Hg2+ cation was achieved by (Ch-Er)3GO2R10 (186.23 mg g−1 and 205 mg g−1) respectively. Graphical abstract

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“…most practical and feasible solution (Ali et al 2022). Green sorbents have been introduced as effective alternatives to petroleum-based sorbents (Al-Qudah et al 2022;Teng et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Sayed

Mazrouaa

Mohamed

et al. 2022

Environ Sci Pollut Res

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“…The typical crystal structure characteristic absorption peaks of chitosan was observed at 2q ¼ 14.0 and 2q ¼ 20.8 . 22,23 Aer graing, the crystal structure changed to some extent, and the original characteristic absorption peak moved to about 2q ¼ 24.0 , and the intensity of the absorption peak was also relatively reduced. It is indicated that the introduction of AM and MAPTAC reduced the crystallinity of chitosan, which is mainly due to the introduction of side chains to increase the steric hindrance of CTS, thus weakening the hydrogen bond on the main chain of CTS, thereby damaging its crystal structure and making it amorphous.…”

Section: Resultsmentioning

confidence: 99%

Optimized preparation and performance evaluation of a bifunctional chitosan-modified flocculant

Zhang

Xie

et al. 2022

RSC Adv.

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“…The crystallinity of the Cs-g-PAAm hydrogel, Cs-g-PAAm/AuNPs, Cs-g-PAAm/AgNPs, and Cs-g-PAAm/Au–Ag-NPs nanocomposite samples under investigation were estimated utilizing Eq. ( 3 ); where the total area below all amorphous peaks is denoted by the symbol ƩA a , and the total area below all crystalline peaks is denoted by the symbol ƩA C 23 , 24 . Also, the average sizes for gold and silver nanoparticles were estimated utilizing Scherrer's Eq.…”

Section: Methodsmentioning

confidence: 99%

pH-responsive chitosan/acrylamide/gold/nanocomposite supported with silver nanoparticles for controlled release of anticancer drug

Nasef

Khozemy

Mahmoud

2023

Sci Rep

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In this study, we prepared a pH-responsive nanocomposite hydrogel based on chitosan grafted with acrylamide monomer and gold nanoparticles using gamma irradiation method (Cs-g-PAAm/AuNPs). The nanocomposite was enhanced with a layer coating of silver nanoparticles to improve the controlled release of the anticancer drug fluorouracil while increasing antimicrobial activity and decreasing the cytotoxicity of silver nanoparticles in nanocomposite hydrogel by combining with gold nanoparticles to enhance the ability to kill a high number of liver cancer cells. The structure of the nanocomposite materials was studied using FTIR spectroscopy and XRD patterns, which demonstrated the entrapment of gold and silver nanoparticles within the prepared polymer matrix. Dynamic light scattering data revealed the presence of gold and silver in the nanoscale with the polydispersity indexes in the mid-range values, indicating that distribution systems work best. Swelling experiments at various pH levels revealed that the prepared Cs-g-PAAm/Au–Ag-NPs nanocomposite hydrogels were highly responsive to pH changes. Bimetallic pH-responsive Cs-g-PAAm/Au–Ag-NPs nanocomposites exhibit strong antimicrobial activity. The presence of AuNPs reduced the cytotoxicity of AgNPs while increasing their ability to kill a high number of liver cancer cells.Cs-g-PAAm/Au–Ag-NPs has a high amount of fluorouracil drug loaded at pH 7.4 reaching 95 mg/g with a maximum drug release of 97% within 300 min. Cs-g-PAAm/Au–Ag-NPs have been recommended to use as oral delivery of anticancer drugs because they secure the encapsulated drug in the acidic medium of the stomach and release it in the intestinal pH.

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Remediation of Astrazon blue and Lerui acid brilliant blue dyes from waste solutions using amphoteric superparamagnetic nanocomposite hydrogels based on chitosan prepared by gamma rays

Cited by 29 publications

References 68 publications

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Green synthesis of chitosan/erythritol/graphene oxide composites for simultaneous removal of some toxic species from simulated solution

Optimized preparation and performance evaluation of a bifunctional chitosan-modified flocculant

pH-responsive chitosan/acrylamide/gold/nanocomposite supported with silver nanoparticles for controlled release of anticancer drug

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