Innovative High-Performance Antimicrobial Agent and Dye Adsorbent Based on Magnetic/Copper Nanoparticles

IF 4.7 3区 工程技术 Q2 ENGINEERING, ENVIRONMENTAL
Mohammadreza Moghaddam-Manesh, Reza Darvishi, Ali Moshkriz
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Abstract

This study focuses on the synthesis and characterization of new magnetic nanoparticles complexed with copper, designated as Fe3O4@gly@cyclohexylidene-spiro[indoline-[1,3]dithiine]@Cu (FMNP). The structural confirmation of these nanoparticles was achieved through several techniques, including SEM imaging, VSM curves, XRD patterns, TGA and DTG curves, ICP-OES spectroscopy, and FT-IR spectrum analysis. Quantum mechanical studies were also conducted to precisely determine the complex’s position. These nanoparticles demonstrated antimicrobial properties against fungal, Gram-negative, and Gram-positive bacterial strains. The minimum fungicidal concentration (MFC) values ranged from 64 to 128 μg/mL, and the minimum bactericidal concentration (MBC) values varied between 8 and 256 μg/mL, indicating superior inhibitory effects on some microbial species compared to existing antibiotics. Furthermore, the FMNP nanoparticles were utilized in fabricating a crosslinked Oxidized Pectin-Fish Collagen Peptides hydrogel (FHGEL) aimed at adsorbing Congo red from aqueous solutions. The study of FHGEL’s adsorption capacity revealed that incorporating 0.03% FMNP significantly enhanced its ability to adsorb Congo red, showing a 3- to 4-fold increase compared to the hydrogel alone. The adsorption mechanism was attributed to dispersion mechanisms and the relaxation of macromolecules within a three-dimensional polymer network. This was supported by the FHGEL’s adsorption data fitting the R–P model, with the heterogeneity factor (n) value from the Sips isotherm model approaching 1.5, and a maximum adsorption capacity of 750.4 mg/g as predicted by the R–P model. The research findings indicate that all hydrogels adhere to the pseudo-second-order kinetics model, suggesting that FMNP could hold promising applications in the field of nanotechnology and environmental remediation.

Abstract Image

Abstract Image

基于磁性/铜纳米颗粒的创新型高性能抗菌剂和染料吸附剂
本研究的重点是合成和表征与铜络合的新型磁性纳米粒子,命名为 Fe3O4@gly@cylohexylidene-spiro[indoline-[1,3]dithiine]@Cu(FMNP)。这些纳米粒子的结构确认是通过多种技术实现的,包括扫描电镜成像、VSM 曲线、XRD 图样、TGA 和 DTG 曲线、ICP-OES 光谱和傅立叶变换红外光谱分析。此外,还进行了量子力学研究,以精确确定复合物的位置。这些纳米颗粒对真菌、革兰氏阴性菌和革兰氏阳性菌菌株具有抗菌特性。最低杀菌浓度(MFC)值介于 64 至 128 μg/mL 之间,最低杀菌浓度(MBC)值介于 8 至 256 μg/mL 之间,表明与现有抗生素相比,它们对某些微生物菌种的抑制作用更强。此外,FMNP 纳米粒子还被用于制造交联氧化果胶-鱼胶原蛋白肽水凝胶(FHGEL),目的是从水溶液中吸附刚果红。对 FHGEL 吸附能力的研究表明,加入 0.03% 的 FMNP 可显著增强其吸附刚果红的能力,与单独的水凝胶相比,吸附能力提高了 3 至 4 倍。吸附机理可归结为三维聚合物网络中大分子的分散机制和松弛作用。FHGEL 的吸附数据符合 R-P 模型,Sips 等温线模型得出的异质性因子 (n) 值接近 1.5,R-P 模型预测的最大吸附容量为 750.4 mg/g,这些数据都证明了这一点。研究结果表明,所有水凝胶都符合伪二阶动力学模型,这表明 FMNP 在纳米技术和环境修复领域具有广阔的应用前景。
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来源期刊
Journal of Polymers and the Environment
Journal of Polymers and the Environment 工程技术-高分子科学
CiteScore
9.50
自引率
7.50%
发文量
297
审稿时长
9 months
期刊介绍: The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.
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