An eco-friendly composite hydrogel based on covalently crosslinked cellulose/poly (glycerol citrate) for thallium (Ι) removal from aqueous solutions

Mohammadbagheri, Zahra; Movahedi, Behrooz; Saeedi, Shaghayegh; Rahmati, Abbas

doi:10.1016/j.ijbiomac.2023.127840

Cited by 2 publications

(2 citation statements)

References 68 publications

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“…26 Simultaneously, the abundant hydroxyl group on the surface of cellulose allows easy modification, facilitating the formation of hydrogel beads. 27,28 In this study, CuMnO 2 bimetallic oxides were synthesized by using a straightforward hydrothermal approach. The hydrogel beads, CS-Ca@PEI/CuMnO 2 , were created by cross-linking cellulose nanofibers (CNF), sodium alginate (SA), polyethylenimine (PEI), and CuMnO 2 with calcium ions and glutaraldehyde.…”

Section: ■ Introductionmentioning

confidence: 99%

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Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Yang,

Hu,

Rao

et al. 2024

Langmuir

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Metal oxides can activate peroxymonosulfate (PMS) for the catalytic degradation of organic dyes. However, achieving high catalytic efficiency, structural stability, ease of recovery, and recyclability remains challenging for both research and practical applications. To address these requirements, a bimetallic oxide, CuMnO 2 , was synthesized using a simple hydrothermal approach and was encapsulated to create hydrogel beads, CS-Ca@PEI/CuMnO 2 . Subsequently, CS-Ca@PEI/CuMnO 2 was used to activate PMS and establish a solid−liquid heterogeneous oxidation system (CS-Ca@PEI/CuMnO 2 /PMS) for the degradation of Congo red (CR). The effects of various parameters such as different systems, catalyst dosages, initial pH values, PMS concentrations, temperatures, and anion types on the catalytic degradation properties of CS-Ca@PEI/CuMnO 2 for CR were systematically evaluated. The results indicated that CS-Ca@PEI/CuMnO 2 has exceptional degradation capacity, achieving 91.0% degradation of CR at pH 7. After three degradation cycles, the catalyst maintained an 86.9% degradation efficiency compared to its original performance, highlighting its robust structural stability. The presence of reactive radicals, specifically 1 O 2 and • O 2 − , were confirmed through quenching experiments, X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance spectroscopy (EPR). Liquid chromatography-tandem mass spectrometry (LC-MS) revealed ten proposed intermediates in the catalytic degradation process. Due to its exceptional catalytic performance, structural durability, recyclability, and ease of retrieval, the catalyst shows great potential for effectively removing organic pollutants from industrial wastewater.

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Section: ■ Introductionmentioning

confidence: 99%

“…In addition, cellulose, as one of the most abundant natural biopolymers, boasts biodegradability, biocompatibility, nontoxicity, low cost, and good thermochemical stability . Simultaneously, the abundant hydroxyl group on the surface of cellulose allows easy modification, facilitating the formation of hydrogel beads. , …”

Section: Introductionmentioning

confidence: 99%

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Yang,

Hu,

Rao

et al. 2024

Langmuir

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Enhancing mechanical and thermal properties of polyvinyl alcohol/curdlan composite hydrogels and aerogels via freeze-casting technique

Cui,

Li,

Wang

et al. 2024

Materials Today Communications

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An eco-friendly composite hydrogel based on covalently crosslinked cellulose/poly (glycerol citrate) for thallium (Ι) removal from aqueous solutions

Cited by 2 publications

References 68 publications

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Enhancing mechanical and thermal properties of polyvinyl alcohol/curdlan composite hydrogels and aerogels via freeze-casting technique

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An eco-friendly composite hydrogel based on covalently crosslinked cellulose/poly (glycerol citrate) for thallium (Ι) removal from aqueous solutions

Cited by 2 publications

References 68 publications

Reusable CS-Ca@PEI/CuMnO2 Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO2 Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Enhancing mechanical and thermal properties of polyvinyl alcohol/curdlan composite hydrogels and aerogels via freeze-casting technique

Contact Info

Product

Resources

About

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red