天然深共晶溶剂前驱体碳量子点高效检测废水中的Cu2+。

IF 2 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Environmental Technology Pub Date : 2025-09-01 Epub Date: 2025-05-12 DOI:10.1080/09593330.2025.2499975
Xiaofeng Zhang, Biao Du, Qinghong Wang, Yali Zhan, Hongwei Ren, Chunmao Chen
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引用次数: 0

摘要

重金属污染已成为一个紧迫的环境问题。然而,传统的重金属离子检测方法大多需要大型精密仪器,存在样品处理复杂、检测时间长、成本高等缺点。碳量子点(CQDs)有效地解决了活性位点少和选择性差的问题。天然深共晶溶剂(NADESs)是一种具有可调结构设计的绿色前驱体,可以有目的地修饰CQDs表面所需的官能团,使其具有更好的性能。本研究成功地采用一步溶剂热法合成了NADESs的NA-CQDs。结果表明,NA-CQDs的直径范围为3 ~ 6 nm。光学性质表明,该材料具有优异的光电性能、激发依赖性和pH稳定性。结果表明,与其他金属离子相比,NA-CQDs对Cu2+的荧光强度有较强的猝灭作用,且在0.0001 ~ 50 μM范围内呈线性关系。并对NA-CQDs的合成和Cu2+的检测机理进行了推测。NA-CQDs在废水中重金属的检测中具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficient detection of Cu2+ in wastewater by carbon quantum dots derived from natural deep eutectic solvents precursor.

Heavy metal pollution has become an urgent environmental problem. However, the traditional heavy metal ions detection methods mostly need large precision instruments, which have disadvantages such as complex sample processing, long detection time and high cost. Carbon quantum dots (CQDs) are efficient to solve the problems of fewer active sites and poor selectivity. Natural deep eutectic solvents (NADESs), a green precursor with adjustable structure design, can purposefully modify the required functional groups on the surface of CQDs and make it possess better performance. In this study, NA-CQDs from NADESs using one-step solvothermal method were successfully synthesized. The results showed that the diameters of NA-CQDs range from 3 to 6 nm. The optical properties indicated that it has excellent optoelectronic properties, excitation-dependent and pH stability. It proved that the fluorescent intensity of Cu2+ was strongly quenched by the NA-CQDs compared to other metal ions and was linear in the range of 0.0001-50 μM. The mechanism of NA-CQDs synthesis and Cu2+ detection is also speculated. NA-CQDs have great potential in the detection of heavy metals in wastewater.

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来源期刊
Environmental Technology
Environmental Technology 环境科学-环境科学
CiteScore
6.50
自引率
3.60%
发文量
0
审稿时长
4 months
期刊介绍: Environmental Technology is a leading journal for the rapid publication of science and technology papers on a wide range of topics in applied environmental studies, from environmental engineering to environmental biotechnology, the circular economy, municipal and industrial wastewater management, drinking-water treatment, air- and water-pollution control, solid-waste management, industrial hygiene and associated technologies. Environmental Technology is intended to provide rapid publication of new developments in environmental technology. The journal has an international readership with a broad scientific base. Contributions will be accepted from scientists and engineers in industry, government and universities. Accepted manuscripts are generally published within four months. Please note that Environmental Technology does not publish any review papers unless for a specified special issue which is decided by the Editor. Please do submit your review papers to our sister journal Environmental Technology Reviews at http://www.tandfonline.com/toc/tetr20/current
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