{"title":"Innovative aqueous-phase synthesized graphene nanocomposites with nano-zerovalent copper for efficient industrial wastewater treatment","authors":"Asmae Snik , Mohamed Larzek , Abdeslam El Bouari","doi":"10.1016/j.jwpe.2024.106605","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents the synthesis of graphene-based nanocomposites (Cu@G, Cu@FA, and Cu@FN) using an innovative one-step aqueous-phase chemical reduction method. Unlike conventional techniques, this novel approach allows precise control over the size and distribution of nano-zerovalent copper (nZVCu<sup>0</sup>) on functionalized graphene under environmentally friendly conditions. The nanocomposites were characterized using XRD, FTIR, TGA, AAS, SEM-EDX, and TEM-EDX, confirming successful nZVCu<sup>0</sup> immobilization. Functional groups (-OH, -COOH, -NH<sub>2</sub>) significantly enhanced adsorption efficiency through π-π stacking, n-π interactions, and electrostatic attractions. For methylene blue (MB) removal, Cu@FN exhibited the highest adsorption capacity (260.45 mg/g), followed by Cu@FA (202.71 mg/g) and Cu@G (143.19 mg/g). Thermodynamic and kinetic analyses revealed that adsorption is governed by both physisorption and chemisorption, ensuring stability and high performance. The nanocomposites demonstrated reusability over five adsorption-desorption cycles, with Cu@FN retaining 94 % efficiency. Applied to industrial textile wastewater, Cu@FN maintained a 99 % removal efficiency, underscoring its potential for large-scale wastewater treatment. This study introduces a scalable method for nZVCu<sup>0</sup> immobilization, establishing Cu@FN as a promising material for industrial wastewater treatment and environmental remediation due to its excellent adsorption capacity, stability, and reusability.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"69 ","pages":"Article 106605"},"PeriodicalIF":6.3000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714424018373","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents the synthesis of graphene-based nanocomposites (Cu@G, Cu@FA, and Cu@FN) using an innovative one-step aqueous-phase chemical reduction method. Unlike conventional techniques, this novel approach allows precise control over the size and distribution of nano-zerovalent copper (nZVCu0) on functionalized graphene under environmentally friendly conditions. The nanocomposites were characterized using XRD, FTIR, TGA, AAS, SEM-EDX, and TEM-EDX, confirming successful nZVCu0 immobilization. Functional groups (-OH, -COOH, -NH2) significantly enhanced adsorption efficiency through π-π stacking, n-π interactions, and electrostatic attractions. For methylene blue (MB) removal, Cu@FN exhibited the highest adsorption capacity (260.45 mg/g), followed by Cu@FA (202.71 mg/g) and Cu@G (143.19 mg/g). Thermodynamic and kinetic analyses revealed that adsorption is governed by both physisorption and chemisorption, ensuring stability and high performance. The nanocomposites demonstrated reusability over five adsorption-desorption cycles, with Cu@FN retaining 94 % efficiency. Applied to industrial textile wastewater, Cu@FN maintained a 99 % removal efficiency, underscoring its potential for large-scale wastewater treatment. This study introduces a scalable method for nZVCu0 immobilization, establishing Cu@FN as a promising material for industrial wastewater treatment and environmental remediation due to its excellent adsorption capacity, stability, and reusability.
期刊介绍：
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies
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