Mandarin Peels-Derived Carbon Dots: A Multifaceted Fluorescent Probe for Cu(II) Detection in Tap and Drinking Water Samples.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Nanomaterials Pub Date : 2024-10-17 DOI:10.3390/nano14201666

Marwa El-Azazy, Alaa AlReyashi, Khalid Al-Saad, Nessreen Al-Hashimi, Mohammad A Al-Ghouti, Mohamed F Shibl, Abdulrahman Alahzm, Ahmed S El-Shafie

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Abstract

Carbon dots (CDs) derived from mandarin peel biochar (MBC) at different pyrolysis temperatures (200, 400, 600, and 800 °C) have been synthesized and characterized. This high-value transformation of waste materials into fluorescent nanoprobes for environmental monitoring represents a step forward towards a circular economy. In this itinerary, CDs produced via one-pot hydrothermal synthesis were utilized for the detection of copper (II) ions. The study looked at the spectroscopic features of biochar-derived CDs. The selectivity of CDs obtained from biochar following carbonization at 400 °C (MBC400-CDs towards various heavy metal ions resulted in considerable fluorescence quenching with copper (II) ions, showcasing their potential as selective detectors. Transmission electron microscopic (TEM) analysis validated the MBC-CDs' consistent spherical shape, with a particle size of <3 nm. The Plackett-Burman Design (PBD) was used to study three elements that influence the F₀/F ratio, with the best ratio obtained with a pH of 10, for 10 min, and an aqueous reaction medium. Cu (II) was detected over a dynamic range of 4.9-197.5 μM and limit of detection (LOD) of 0.01 μM. Validation testing proved the accuracy and precision for evaluating tap and mountain waters with great selectivity and no interference from coexisting metal ions.

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柑橘皮衍生碳点：一种用于自来水和饮用水样本中铜（II）检测的多元荧光探针。

我们合成并表征了在不同热解温度（200、400、600 和 800 ℃）下从柑橘皮生物炭（MBC）中提取的碳点（CD）。这种将废弃材料转化为用于环境监测的荧光纳米探针的高价值转化代表着向循环经济迈进了一步。在本研究中，通过一锅水热合成生产的 CD 被用于检测铜 (II) 离子。研究考察了生物炭衍生 CD 的光谱特征。在 400 °C 下碳化后从生物炭中获得的 CD（MBC400-CDs）对各种重金属离子具有选择性，在铜（II）离子的作用下产生大量荧光淬灭，显示了其作为选择性检测器的潜力。透射电子显微镜（TEM）分析证实，MBC-CDs 具有一致的球形形状，粒径比为 0/F，在 pH 值为 10、反应时间为 10 分钟和水性反应介质中获得的比率最佳。铜（II）的检测动态范围为 4.9-197.5 μM，检测限（LOD）为 0.01 μM。验证测试表明，该方法在评估自来水和山泉水方面具有很高的准确度和精确度，选择性强，不受共存金属离子的干扰。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.