由于具有低毒性、化学惰性、可调谐荧光和良好的水溶性性能,碳量子点(CDs)已被应用于许多领域,包括化学和生物传感、荧光成像和药物传递。利用简便环保的水热技术,由柠檬酸(CA)和乙醇胺(EN)的合成了氮掺杂的碳量子点(EN-CDs);并利用红外光谱仪、X射线衍射仪、紫外-可见光谱仪等手段对样品结构进行了表征。有趣的是,合理设计的EN-CDs在模拟阳光下对罗丹明B(RhB)的降解表现出良好的光催化活性。此外,EN-CDs在降解藏红T(ST)方面也表现出一些光催化性能;在光催化过程中空穴(h+)和羟基自由基(·OH)是其两种主要的活性物质。这项工作可能为环境友好地制备光催化剂以补救淡水污染提供一种新的方法。
Due to low toxicity,chemical inertness,tunable fluorescence,and good water solubility properties,carbon dots (CDs) have been used in numerous fields,including chemical and biological sensing,fluorescence imaging,and drug delivery.A simple and eco-friendly one-pot hydrothermal technique was utilized for the synthesis of nitrogen-doped carbon quantum dots (EN-CDs) from citric acid (CA) and ethanolamine (EN).The sample structure was characterized by infrared spectrometer,X-ray diffractometer and UV-Vis spectrometer.Interestingly,the rationally designed EN-CDs exhibited good photocatalytic activity for the degradation of rhodamine B (RhB) under simulated sunlight.In addition,the EN-CDs also presented some photocatalytic properties in degrading red Tibetan T(ST).Two major active species,holes (h+) and hydroxyl radicals (·OH),were found in the process of photocatalysis.This work might provide a novel method for the environmentally friendly preparation of photocatalysts to remedy freshwater pollution.
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基金资助
福建省教育厅中青年教师教育科研项目(JT180826);福建省一流本科专业建设点(应用化学)(SJZY-2020-01)
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