仿生氧化石墨烯海绵,用于增强对水中遗留和新出现污染物的吸附

IF 6.7 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Hadi Rezvani, Julia Costantino, Mihir Kapadia, Yalda Majooni, Samson O. Abioye, Mahsa Moayedi, Nariman Yousefi
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引用次数: 0

摘要

本研究考察了仿生氨基酸修饰的还原性氧化石墨烯(rGO)海绵对水中遗留和新出现污染物的吸附性能。合成了含有l -色氨酸(GOTR)和l -苯丙氨酸(GOPA)的改性海绵,并利用扫描电镜(SEM)、傅里叶变换红外光谱(FTIR)、拉曼光谱(Raman)、x射线衍射(XRD)、x射线光电子能谱(XPS)和表面积分析对其进行了表征,以证实其结构修饰和官能团的加入。以亚甲基蓝(MB)、罗丹明B (RhB)、对乙酰氨基酚(AC)和双氯芬酸(DCF)作为模型遗留污染物和新出现的污染物进行吸附实验。根据Langmuir等温线模型,优化后的海绵GOTR15-20%和GOPA1.5-2.5%对DCF、MB、AC和RhB的最大吸附量分别为1003 mg/g、653 mg/g、556 mg/g和556 mg/g。氨基酸的掺入增加了表面面积和活性官能团的可用性,与未经改性的还原氧化石墨烯海绵相比,吸附效率提高了2倍。这些发现表明,氨基酸修饰的还原氧化石墨烯海绵为去除水中各种遗留和新出现的污染物提供了一种有效、通用和绿色的解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Bio-inspired graphene oxide sponges for enhanced adsorption of legacy and emerging contaminants from water

Bio-inspired graphene oxide sponges for enhanced adsorption of legacy and emerging contaminants from water
This study investigates the adsorption performance of bioinspired, amino acid-modified reduced graphene oxide (rGO) sponges to remove model legacy and emerging contaminants from water. Modified sponges containing L-tryptophan (GOTR) and L-phenylalanine (GOPA) were synthesized and characterized using scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-Ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and surface area analysis to confirm structural modifications and functional group incorporation. Adsorption experiments were conducted using methylene blue (MB), rhodamine B (RhB), acetaminophen (AC), and diclofenac (DCF) as model legacy and emerging contaminants of concern. The optimized sponges, GOTR15–20% and GOPA1.5–2.5%, demonstrated maximum adsorption capacities of 1003 mg/g for DCF, 653 mg/g for MB, 556 mg/g for AC, and 556 mg/g for RhB, as described by the Langmuir isotherm model. The incorporation of amino acids enhanced the surface area and the availability of active functional groups, increasing adsorption efficiency by up to 2-fold compared to unmodified rGO sponges. These findings suggest that amino acid-modified rGO sponges offer an effective, versatile, and green solution for removing diverse legacy and emerging contaminants from water.
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来源期刊
Journal of water process engineering
Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
10.70
自引率
8.60%
发文量
846
审稿时长
24 days
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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