Polyvinyl alcohol/Fe3O4@carbon nanotubes nanocomposite: Electrochemical-assisted synthesis, physicochemical characterization, optical properties, cytotoxicity effects and ultrasound-assisted treatment of aqueous based organic compound
Polyvinyl alcohol/Fe3O4@carbon nanotubes nanocomposite: Electrochemical-assisted synthesis, physicochemical characterization, optical properties, cytotoxicity effects and ultrasound-assisted treatment of aqueous based organic compound
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DOI：
10.1016/j.jiec.2018.05.006
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发表时间：
2018-09-25
影响因子：
6.1
通讯作者：
Pezeshkpour, Vahid
中科院分区：
文献类型：
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作者：
Sadeghfar, Fardin;Ghaedi, Mehrorang;Pezeshkpour, Vahid
在本研究中，聚乙烯醇Fe（3）O（4）@碳纳米管采用电化学辅助合成法制备了（PVA/Fe3O4@CNTs）纳米复合材料，采用FT-IR、UV-vis、FE-SEM、TEM、BET和XRD等技术对其进行了表征，并将其应用于超声辅助去除水溶液中的亚甲基蓝（MB）染料和对奇异变形杆菌（PM）的体外抗菌研究，耐甲氧西林金黄色葡萄球菌（MRSA）、大肠杆菌（E。大肠杆菌）和铜绿假单胞菌（PAO 1）细菌。考察了MB初始浓度、吸附剂质量、超声时间和pH等因素对MB去除率的影响，并采用中心组合设计（CCD）进行优化。实验结果被应用于一个二次模型的建设，预测响应方差分析（ANOVA），并获得有用的信息，变量和它们的主效应之间可能的相互作用。高F值（207.38）、低P值（0.05）沿着以及合理的决定系数值（R-2 = 0.99452）证实了实验值与预测值之间的良好相关性。当吸附剂用量为0.035 g，染料浓度为25.0 mg L-1，超声时间为6 min，pH = 5.5时，染料的去除率最高，可达99.5%。PVA/3wt%Fe3O4@CNTs对MB的吸附过程符合准二级动力学和Langmuir吸附等温线模型。低剂量的PVA/Fe3O4@CNTs纳米复合材料（0.005 g）在短时间内（6.0 min）成功吸附MB（R%> 90.0%），在25 ℃时最高单层吸附量为250.10 mg g（-1）。(C)2018年韩国工业与工程化学学会。Elsevier B. V.出版，保留所有权利。
In this research study, the polyvinyl alcoholFe(3)O(4)@carbon nanotubes (PVA/Fe3O4@CNTs) nanocomposite was prepared by electrochemical-assisted synthesis method, characterized by FT-IR, UV-vis, FE-SEM, TEM, BET and XRD techniques, and subsequently applied for the ultrasound-assisted removal of methylene blue (MB) dye from aqueous solution and as antibacterial agent in vitro investigation against Proteus mirabilis (PM),Methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli (E. Coli) and Pseudomonas aeruginosa (PAO1) bacteria. The effects of important variables such as the initial concentration of MB, adsorbent mass, sonication time and pH on the removal percentage of MB were investigated and optimized by central composite design (CCD). The experimental results were applied for the construction of a quadratic model to predict the response following the analysis of variance (ANOVA) and to obtain useful information about the possible interaction between the variables and their main effects. The high F-value (207.38), low P-value ( 0.05) along with the reasonable value of the coefficient of determination (R-2 = 0.99452) confirmed a good correlation between the experimental and predicted values. The highest removal percentage of 99.5% was attained at the optimum conditions of 0.035 g of the adsorbent, 25.0 mg L-1 of dye concentration, 6 min sonication time and pH = 5.5. The adsorption process of MB by PVA/3 wt% Fe3O4@CNTs was well described by pseudo-second-order kinetic and Langmuir isotherm models. A low dose of PVA/Fe3O4@CNTs nanocomposite (0.005 g) was successfully used for the adsorption of MB (R%> 90.0%) within a short time (6.0 min) with the highest monolayer adsorption capacity of 250.10 mg g(-1) at 25 degrees C. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.