{"title":"Precursor Controlled Copper-Doped Carbon Quantum Dots Efficient for the Degradation of Rhodamine-B","authors":"Yunfei Li, Zhichang Liu, Hongwei Ren, Chunmao Chen","doi":"10.1007/s11270-025-07785-7","DOIUrl":null,"url":null,"abstract":"<div><p>The dyeing industry wastewater has greatly hampered the ecological environment. The carbon quantum dots (CQDs) is a promising catalyst for photocatalytic degradation. To control the specified structure of CQDs, a designable-green deep eutectic solvents (DESs) was targeted as the precursor. In this work, a copper-doped solid-state Cu-CQDs was successfully prepared by combustion method from glycerol/choline chloride/CuCl<sub>2</sub>·2H<sub>2</sub>O DESs, and characterized by Fourier transform infrared spectroscopy, XRD, XPS, UV–Vis spectroscopy, and fluorescence spectroscopy. The analysis revealed that the metallic copper-doped Cu-CQDs have better morphological and structural properties and exhibit good optics characteristics. The prepared CQDs were applied to the photocatalytic degradation of Rhodamine-B (RhB). It was found that the ⋅O<sub>2</sub><sup>−</sup> was the main active specie, and it can efficient degrade RhB up to 95%.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 3","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-07785-7","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
The dyeing industry wastewater has greatly hampered the ecological environment. The carbon quantum dots (CQDs) is a promising catalyst for photocatalytic degradation. To control the specified structure of CQDs, a designable-green deep eutectic solvents (DESs) was targeted as the precursor. In this work, a copper-doped solid-state Cu-CQDs was successfully prepared by combustion method from glycerol/choline chloride/CuCl2·2H2O DESs, and characterized by Fourier transform infrared spectroscopy, XRD, XPS, UV–Vis spectroscopy, and fluorescence spectroscopy. The analysis revealed that the metallic copper-doped Cu-CQDs have better morphological and structural properties and exhibit good optics characteristics. The prepared CQDs were applied to the photocatalytic degradation of Rhodamine-B (RhB). It was found that the ⋅O2− was the main active specie, and it can efficient degrade RhB up to 95%.
印染工业废水严重污染了生态环境。碳量子点（CQDs）是一种很有前途的光催化降解催化剂。为了控制CQDs的特定结构，以设计绿色深共晶溶剂（DESs）为前驱体。本文以甘油/氯化胆碱/CuCl2·2H2O DESs为原料，采用燃烧法制备了掺杂铜的固态Cu-CQDs，并用傅里叶变换红外光谱、XRD、XPS、UV-Vis光谱和荧光光谱对其进行了表征。分析表明，金属铜掺杂Cu-CQDs具有更好的形态和结构性能，并具有良好的光学特性。将所制备的CQDs应用于光催化降解罗丹明- b （RhB）。结果表明，⋅O2−为主要活性物质，对RhB的降解效率高达95%。图形抽象
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Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments.
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Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.
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