面向染料吸附的导电聚合物复合材料的合成、表征和分析

IF 1.7 4区 工程技术 Q4 POLYMER SCIENCE
Norhabibah Mohamad , Noordini M. Salleh , Habibun Nabi Muhammad Ekramul Mahmud
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引用次数: 0

摘要

本研究报告介绍了基于聚吡咯(PPy)和聚乙烯亚胺(PEI)的新型可回收聚合物基吸附剂的合成,用于去除阳离子结晶紫(CV)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis, characterization and analysis of conducting polymer composites toward dye adsorption

The present effort reports on the synthesis of novel and recyclable polymer-based adsorbents based on polypyrrole (PPy) and polyethyleneimine (PEI) for the removal of cationic crystal violet (CV) dye from aqueous solutions. The characterization of the composites was determined by FTIR, XRD, FESEM, and XPS techniques. The effects of different variables on the adsorption of crystal violet dye were studied, including the pH, adsorbent doses, and contact time. The research findings show that the different oxidants used to prepare polypyrrole in PPy-PEI adsorbents play a vital role in CV dye adsorption. The PPy-PEI composite prepared by using the ammonium persulfate oxidant was found to exhibit the highest adsorption of 70.9% among the three different oxidants, namely, anhydrous ferric chloride, ferric chloride hexahydrate, and ammonium persulfate. The ideal adsorption conditions for the removal of CV dye were discovered using an adsorbent dosage of 0.3 g at pH 11, with a contact time of 180 min. Kinetic regression analysis indicated that the adsorption processes followed the pseudo-second order kinetic model and fit well with the Langmuir isotherm, with a maximum monolayer sorption capacity of 142.86 mg/g at a temperature of 27 °C. In addition, the regeneration of the PPy-PEI composite was accomplished with dye adsorption efficiency decreasing from 70.9% to 64.4% after three adsorption-desorption cycles. The present work suggests that the PPy-PEI composite is a promising adsorbent for removing cationic CV dye in aqueous solutions.

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来源期刊
CiteScore
3.50
自引率
5.30%
发文量
37
审稿时长
1.6 months
期刊介绍: The scope of the journal is to publish original contributions and reviews on studies, methodologies, instrumentation, and applications involving the analysis and characterization of polymers and polymeric-based materials, including synthetic polymers, blends, composites, fibers, coatings, supramolecular structures, polysaccharides, and biopolymers. The Journal will accept papers and review articles on the following topics and research areas involving fundamental and applied studies of polymer analysis and characterization: Characterization and analysis of new and existing polymers and polymeric-based materials. Design and evaluation of analytical instrumentation and physical testing equipment. Determination of molecular weight, size, conformation, branching, cross-linking, chemical structure, and sequence distribution. Using separation, spectroscopic, and scattering techniques. Surface characterization of polymeric materials. Measurement of solution and bulk properties and behavior of polymers. Studies involving structure-property-processing relationships, and polymer aging. Analysis of oligomeric materials. Analysis of polymer additives and decomposition products.
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