UV-Responsive Er-Doped NiAl2O4/Mn/GO Nanocomposites: Green Synthesis and Photocatalytic Degradation of Organic Pollutants via Fluorescent Behavior for Water Purification.

IF 2.6 4区 化学 Q2 BIOCHEMICAL RESEARCH METHODS
Seyed Ali Hosseini Moradi, Durgham Abdulsattar Oleiwi, Kamran Heydaryan, Sattar H Abed, Farzad Namvar
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引用次数: 0

Abstract

Synthetic dye-induced water pollution poses considerable environmental challenges, underscoring the urgent demand for novel and sustainable remediation strategies. In this context, the present study introduces an eco-friendly synthesis approach for Er-doped NiAl₂O₄/Mn/GO nanocomposites, employing rhubarb extract as a natural capping agent to enhance the process's sustainability. Various synthesis techniques, including microwave irradiation, co-precipitation, ultrasonic treatment, and hydrothermal processes, were rigorously investigated to determine their impact on the morphological features, physicochemical attributes, and fluorescence behavior of the resulting nanocomposites. Comprehensive characterization was performed using advanced analytical methods such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier-transform infrared spectroscopy (FTIR), and Brunauer-Emmett-Teller (BET) surface area analysis. The photophysical characteristics of the nanocomposites were investigated, emphasizing their fluorescence response under UV irradiation. A band gap value of 3.2 eV highlighted their promising photocatalytic activity under ultraviolet light exposure. The photocatalytic efficiency, assessed against Acid Black 1 dye, demonstrated effective degradation capabilities. Radical scavenger experiments utilizing p-benzoquinone, benzoic acid, and EDTA offered valuable insights into the underlying degradation mechanisms. The ultrasound-assisted synthesis technique exhibited superior photocatalytic efficiency, achieving a remarkable 94.59% degradation of dye within 60 min utilizing 40 mg of the nanocatalyst. These findings underscore the significant potential of Er-doped NiAl₂O₄/Mn/GO nanocomposites, characterized by their enhanced fluorescence properties, as efficient and sustainable photocatalysts for the effective elimination of organic pollutants from wastewater.

紫外光响应铒掺杂NiAl2O4/Mn/GO纳米复合材料:绿色合成及光催化降解水净化中有机污染物的荧光行为
合成染料引起的水污染带来了相当大的环境挑战,迫切需要新的可持续的修复策略。在此背景下,本研究介绍了一种生态友好的er掺杂NiAl₂O₄/Mn/GO纳米复合材料的合成方法,采用大黄提取物作为天然盖层剂,以提高该过程的可持续性。研究了包括微波辐照、共沉淀法、超声波处理和水热法在内的各种合成技术,以确定它们对所得纳米复合材料的形态特征、理化性质和荧光行为的影响。采用x射线衍射(XRD)、场发射扫描电镜(FESEM)、傅里叶变换红外光谱(FTIR)和布鲁诺尔-埃米特-泰勒(BET)表面积分析等先进的分析方法进行了全面的表征。研究了纳米复合材料的光物理特性,重点研究了其在紫外照射下的荧光响应。带隙值为3.2 eV,表明其在紫外光照射下具有良好的光催化活性。对酸性黑1染料的光催化效率进行了评估,显示出有效的降解能力。利用对苯醌、苯甲酸和EDTA的自由基清除剂实验为潜在的降解机制提供了有价值的见解。超声辅助合成技术表现出优异的光催化效率,使用40 mg纳米催化剂,在60分钟内对染料的降解率达到了94.59%。这些发现强调了er掺杂NiAl₂O₄/Mn/GO纳米复合材料的巨大潜力,其特征在于其增强的荧光特性,作为有效消除废水中有机污染物的高效和可持续的光催化剂。
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来源期刊
Journal of Fluorescence
Journal of Fluorescence 化学-分析化学
CiteScore
4.60
自引率
7.40%
发文量
203
审稿时长
5.4 months
期刊介绍: Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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