木质纤维素基碳量子点合成与调控研究进展

Research progress on synthesis and regulation of lignocellulose-based carbon quantum dots

近年各种木质纤维素类生物质被作为绿色碳源制备碳量子点,并广泛应用于防伪、成像、催化等领域。使用木质纤维素类生物质制备碳量子点可以实现其低成本、大规模、快速制备。然而木质纤维素类生物质结构复杂,木质纤维素基碳量子的合成过程受原料种类、制备过程影响,且其荧光特性与其碳的内核结构与表面形态紧密关联。这些因素使木质纤维素基碳量子点的制备与调控过程难以精准进行,因此探究木质纤维素基碳量子点的形成过程机理和调控提质机制十分重要。鉴于此,本文对木质纤维素基量子点的形成方法、过程影响等进行了综述,分析评价了各种制备与改性方法的优缺点,深入讨论了木质纤维素基碳量子点的合成机理与调控方法,并对其存在的问题以及挑战提出了展望。

In recent years,various lignocellulosic biomasses have been used as green carbon sources to prepare carbon quantum dots,which are widely used in anti-counterfeiting,imaging,catalysis and other fields.Preparing carbon quantum dots from lignocellulosic biomasses can achieve low-cost,large-scale,and rapid preparation.However,the structure of lignocellulosic biomass is complex.The synthesis process of carbon quantum dots is affected by the type of raw materials and preparation process,and its fluorescence properties are closely related to the core structure and surface morphology.These factors make the preparation and regulation process of lignocellulose-based carbon quantum dots difficult to carry out precisely,and it is important to investigate the formation mechanism of lignocellulosic-based carbon quantum dots and the regulating mechanism for the quality improvement.In view of this,this paper reviews the formation methods and process of lignocellulose-based quantum dots,analyzes the advantages and disadvantages of various preparation and modification methods,discusses in-depth their synthesis mechanisms and regulation methods,and presents an outlook on their problems and challenges.