Based on previous studies, this paper reviews the current preparation methods of lignin carbon quantum dots (LCQDs), and focuses on the preparation of lignin derivatives and various lignin based CQDs fluorescent materials and their applications in heavy metal ion detection, biological imaging, anti-counterfeiting printing, optical devices and other fields. Finally, the preparation methods of LCQDs and the challenges, research and selection of fluorescent materials for future applications are discussed in detail.
Abstract:
In recent years, lignin has attracted substantial attention from researchers because of its diverse sources, low cost, and renewability. The effective functionalization and enhanced value-added utilization of lignin have successfully addressed the challenges associated with biomass resource waste, low utilization rate, high material cost, and underwhelming performance in energy, environmental protection, and medical applications. The emergence of lignin carbon quantum dots (LCQDs) has opened new avenues for the development and utilization of lignin by offering exciting opportunities for their applications. LCQDs possess unique characteristics such as fluorescence properties, size effect, surface effect, and interface effects, which are promising for applications in many fields. This paper provides a comprehensive overview of the structure and applications of lignin with a specific focus on the preparation method of LCQDs as well as their various applications in drug delivery systems, electrode material fabrication, and antibacterial agent development. Furthermore, this study offers valuable insights into the prospects of LCQDs and aims to contribute to their functional development. Finally, the challenges associated with leveraging the fluorescence properties of LCQDs are discussed, along with potential directions for future research.
Author list:
Xiuxin Yin, Zhili Zhang*, Fengfeng Li*, Maoqing Fu, Tianci Qin, Xingxiang Ji, Yuanyuan Wang, Zhiwen Wang, Shaolong Sun*
How to cite:
X. Yin, Z. Zhang, F. Li, M. Fu, T. Qin, X. Ji, Y. Wang, Z. Wang, S. Sun, Exploration 2025, 70039.
https://doi.org/10.1002/EXP.70039