Bimetallic Metal-Organic Framework Decorated 3D-electrospun Nanofibers as a Highly Efficient Sorbent for Removing Organic Dyes from Contaminated Water

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-13 DOI:10.2174/0115734110318608240603144306

W. El-Said, A. S. Al-Bogami, Abdullah Akhdhar, Naeem Akhtar

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引用次数: 0

Abstract

Recently, bimetallic metal-organic frameworks (MOFs) have gained significant attention for their potential in treating industrial wastewater. The rapid increase in industrialization worldwide has resulted in the continual discharge of organic dyes in aquatic ecosystems. These dyes disrupt aquatic ecosystems and are hazardous for human beings. Thus, there is a considerable demand to design a framework for the removal of contaminants from wastewater. For this purpose, this study focuses on synthesizing BM-MOF@PC and investigating its efficacy in removing methyl orange (MO) and congo red (CR). A novel, low-cost, eco-friendly Zn and Co-based bimetallic MOF (BM-MOF) modified polyaniline and cellulose acetate (PC) were synthesized based on electrospun (BM-MOF@PC) nanofibers. The prepared BM-MOF@PC was characterized by SEM, XRD, FTIR, and N2 adsorption-desorption isotherm. The smooth formation of BM-MOF@PC nanofibers generates high adsorption capability by exposing the maximal active site for the adsorption at the entire surface. The adsorption capability of synthesized BM-MOF@PC nanofibers was evaluated against MO and CR dyes from an aqueous phase. The maximum adsorption capacity of MO and CR at the surface of BM-MOF@PC nanofibers were 636.9 and 313.05 mg/g, respectively. Several adsorption parameters, including initial dye concentration, contact time, temperature, the adsorbent's doses, and pH's effect on adsorption kinetics, were investigated. The ability of BM-MOF@PC nanofibers to adsorb MO and CR at various pHs indicated that several attraction forces, including electrostatic interaction, hydrogen bonding, and π-π interactions, could be involved in the dye removal. The fabricated material BM-MOF@PC nanofibers have a large surface area compared to BM-MOF, which indicates the more active sites for the adsorption of MO and CR dyes. Moreover, the BM-MOF@PC nanofibers demonstrated robust reusability towards MO and CR adsorption across five cycles, which suggested that our fabricated material is more stable and economically reliable in real-time applications.

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双金属金属有机框架装饰的三维电纺纳米纤维作为一种高效吸附剂，用于去除受污染水中的有机染料

最近，双金属金属有机框架（MOFs）因其在处理工业废水方面的潜力而备受关注。全球工业化的快速发展导致有机染料不断排入水生生态系统。这些染料破坏了水生生态系统，并对人类造成危害。为此，本研究的重点是合成 BM-MOF@PC，并研究其在去除甲基橙（MO）和刚果红（CR）方面的功效。在电纺（BM-MOF@PC）纳米纤维的基础上，合成了一种新型、低成本、环保的 Zn 和 Co 基双金属 MOF（BM-MOF）修饰聚苯胺和醋酸纤维素（PC）。对制备的 BM-MOF@PC 纳米纤维进行了扫描电镜、X 射线衍射、傅立叶变换红外光谱和 N2 吸附-解吸等温线表征。BM-MOF@PC 纳米纤维的平滑形成使整个表面都暴露出最大的吸附活性位点，从而产生了较高的吸附能力。评估了合成的 BM-MOF@PC 纳米纤维对水相中 MO 和 CRdyes 的吸附能力，BM-MOF@PC 纳米纤维表面对 MO 和 CR 的最大吸附量分别为 636.9 mg/g 和 313.05 mg/g。研究了多种吸附参数，包括初始染料浓度、接触时间、温度、吸附剂剂量和 pH 值对吸附动力学的影响。BM-MOF@PC 纳米纤维在不同 pH 条件下吸附 MO 和 CR 的能力表明，静电作用、氢键和 π-π 相互作用等几种吸引力可能参与了染料的去除。此外，BM-MOF@PC 纳米纤维对 MO 和 CR 的吸附在五个周期内都表现出很强的重复使用性，这表明我们制备的材料在实时应用中更加稳定和经济可靠。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.