Recent advances of biomass carbon dots on syntheses, characterization, luminescence mechanism, and sensing applications

Nano Select

Zhou Li¹  Aimiao Qin²  Kaiyou Zhang²  Xinyu Hao²  Lei Liao²  Ziyuan Li²  Jun Ou²  Ying Lou²  Shuoping Chen² 

[1] Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing China;Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China;

关键词: biomass;    carbon dots;    luminescence mechanism;    metal ions detection;    quenching mechanism;   

DOI  :  10.1002/nano.202000232

来源: DOAJ

【 摘 要 】

Abstract Carbon dots have attracted much attention due to their high fluorescence intensity, easy modification, good stability, and biocompatibility. However, the realization of low‐cost mass production of high‐quality carbon dots still faces great challenges. Biomass is of non‐toxic and environmentally friendly organism, but a lot of biomass is treated as waste for burning and landfill at present, causing irreparable pollution to the environment. In fact, many biomass resources are ideal candidates for preparing carbon dots. This review focuses on carbon dots including carbon quantum dots (CQDs) and graphene quantum dots (GQDs) which using biomass as carbon source on the aspects of plants and their derivatives, animals and their derivatives and municipal waste. The characterization of the structure and composition of biomass carbon dots, the regulation of fluorescence color and the methods of improving quantum yield (QY) including heteroatom doping and surface modification are introduced in detail. Moreover, biomass carbon dots for detecting metal ions and non‐metal molecules and their quenching mechanism are emphatically introduced in addition to summarizing the luminescence mechanism, and some promising prospects and challenges in this uplifting field are discussed.

【 授权许可】

Unknown