Green synthesised nanocopper/chitosan aerogel biocomposite as a recyclable and nonprecious catalyst for methyl orange reduction

Truong, Thi Be Ta; Nguyen, Thi Thu Thuy; Nguyen, Phung Anh; Do, Ba Long; Van Nguyen, Thi Thuy; Huynh, Ky Phuong Ha; Phan, Hong Phuong; Dang-Bao, Trung; Ho, Thanh Gia-Thien; Nguyen, Tri

doi:10.1016/j.colsurfa.2023.132622

Cited by 11 publications

(3 citation statements)

References 60 publications

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“…Later, electron transfer occurs between nucleophilic BH 4 − ions and the electrophilic MO molecules through Bi/HAp-rGO. Finally, the orange color MO becomes colorless (Keypour et al 2023 ; Truong et al 2024 ). In general, NaBH 4 , a reducing agent, is decomposed as H 2 , diborane, and electrons.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the abovementioned problems, scientists have directed their research towards the treatment of organic pollutants in industrial wastewater and the development of innovative treatment methods. Among the treatment techniques for dye-contaminated water, methods such as coagulation (Liu et al 2022 ), ion exchange (Joseph et al 2020 ), adsorption (Zolfaghari et al 2023 ), electrochemical treatment (Bustos-Terrones et al 2021 ), flocculation (Januário et al 2021 ), and chemical reduction (Truong et al 2024 ) have been used recently.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of methyl orange decolorization by bismuth(0)-doped hydroxyapatite/reduced graphene oxide composite using RSM-CCD

Ecer,

Yilmaz,

Ulas

et al. 2024

Environ Sci Pollut Res

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In the current study, the catalyst for the decolorization of methyl orange (MO) was developed HAp-rGO by the aqueous precipitation approach. Then, bismuth(0) nanoparticles (Bi NPs), which expect to show high activity, were reduced on the surface of the support material (HAp-rGO). The obtained catalyst was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. The parameters that remarkably affect the decolorization process (such as time, initial dye concentration, NaBH4 amount, and catalyst amount) have been examined by response surface methodology (RSM), an optimization method that has acquired increasing significance in recent years. In the decolorization of MO, the optimum conditions were identified as 2.91 min, Co: 18.85 mg/L, NaBH4 amount: 18.35 mM, and Bi/HAp-rGO dosage: 2.12 mg/mL with MO decolorization efficiency of 99.60%. The decolorization process of MO with Bi/HAp-rGO was examined in detail kinetically and thermodynamically. Additionally, the possible decolorization mechanism was clarified. The present work provides a new insight into the use of the optimization process for both the effective usage of Bi/HAp-rGO and the catalytic reduction of dyes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of methyl orange decolorization by bismuth(0)-doped hydroxyapatite/reduced graphene oxide composite using RSM-CCD

Ecer,

Yilmaz,

Ulas

et al. 2024

Environ Sci Pollut Res

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“…What makes this aerogel stand out is the use of the extract of durian (Durio zibethinus) shell (DS) as a reducer to convert copper cations into copper nanoparticles. Investigations have shown that the presence of copper, contrary to the reduction of porosity in the aerogel, improves its catalytic performance in reducing methyl orange [ 87 ].…”

Section: Organic Contaminatesmentioning

confidence: 99%

Recent Advances in Porous Bio-Polymer Composites for the Remediation of Organic Pollutants

Tadayoni,

Dinari,

Roy

et al. 2024

Polymers

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The increasing awareness of the importance of a clean and sustainable environment, coupled with the rapid growth of both population and technology, has instilled in people a strong inclination to address the issue of wastewater treatment. This global concern has prompted individuals to prioritize the proper management and purification of wastewater. Organic pollutants are very persistent and due to their destructive effects, it is necessary to remove them from wastewater. In the last decade, porous organic polymers (POPs) have garnered interest among researchers due to their effectiveness in removing various types of pollutants. Porous biopolymers seem to be suitable candidates among POPs. Sustainable consumption and environmental protection, as well as reducing the consumption of toxic chemicals, are the advantages of using biopolymers in the preparation of effective composites to remove pollutants. Composites containing porous biopolymers, like other POPs, can remove various pollutants through absorption, membrane filtration, or oxidative and photocatalytic effects. Although composites based on porous biopolymers shown relatively good performance in removing pollutants, their insufficient strength limits their performance. On the other hand, in comparison with other POPs, including covalent organic frameworks, they have weaker performance. Therefore, porous organic biopolymers are generally used in composites with other compounds. Therefore, it seems necessary to research the performance of these composites and investigate the reasons for using composite components. This review exhaustively investigates the recent progress in the use of composites containing porous biopolymers in the removal of organic pollutants in the form of adsorbents, membranes, catalysts, etc. Information regarding the mechanism, composite functionality, and the reasons for using each component in the construction of composites are discussed. The following provides a vision of future opportunities for the preparation of porous composites from biopolymers.

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Synergistic design of C/SiC@SiC aerogel for enhanced thermal insulation and electromagnetic wave absorption

Ye,

Zhang,

et al. 2024

Ceramics International

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Green synthesised nanocopper/chitosan aerogel biocomposite as a recyclable and nonprecious catalyst for methyl orange reduction

Cited by 11 publications

References 60 publications

Optimization of methyl orange decolorization by bismuth(0)-doped hydroxyapatite/reduced graphene oxide composite using RSM-CCD

Optimization of methyl orange decolorization by bismuth(0)-doped hydroxyapatite/reduced graphene oxide composite using RSM-CCD

Recent Advances in Porous Bio-Polymer Composites for the Remediation of Organic Pollutants

Synergistic design of C/SiC@SiC aerogel for enhanced thermal insulation and electromagnetic wave absorption

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