量子点
成核
背景(考古学)
材料科学
热液循环
碳纤维
纳米技术
水热合成
化学工程
分子
氧化物
化学
有机化学
复合材料
古生物学
工程类
冶金
复合数
生物
作者
Barbara Vercelli,Eleonora Micheli,Riccardo Donnini,María Losurdo,Heiko Lange,Barbara La Ferla,Alice Pavan,Melissa Saibene,Giancarlo Capitani,F. Ghezzi,José María Montenegro Martos,M. Carmen Ruiz Delgado,Rocío Ponce Ortiz
标识
DOI:10.1002/sstr.202400481
摘要
The surface of carbon quantum dots (CDs) is rich in functionalities, which could be selectively post‐derivatized to obtain smart materials for various advanced applications. In this context, the development of a robust synthesis processes for CD formation is a considerable challenge to guarantee the reproducibility of the properties and functionalities on their surface for successful post‐derivatization. Thus, understanding the formation mechanism of CDs at the molecular level and its correlations with the reaction parameters is of paramount importance. Herein, we describe how two selected purification strategies and the reaction parameters influence the properties of CDs obtained through the hydrothermal method. We adopted a simplified approach employing small molecules that can be extracted from biomass/biowaste to develop a sustainable and scalable synthetic strategy for industrial applications. First, we studied the influence of the reaction parameters on the CD morphological, structural, and chemical properties. Then, we show how the reaction parameters, the temperature in particular, influence the formation of graphitic nitrogen oxide centers in CD honeycomb structure and their role in determining CDs color and stability. Finally, we concluded that low reaction temperatures cause an incomplete CD nucleation process while higher ones lead to more stable CDs, with reproducible properties and surface functionalities.
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