文献类型： 外文期刊

作者： Lv, Rui ¹ ; Wu, Liyu ¹ ; Tian, Fuli ² ; Bai, Hongmei ³ ; Huang, Dongke ¹ ; Lei, Yanqiu ¹ ; Liu, Fenrong ¹ ;

作者机构： 1.Inner Mongolia Univ, Sch Chem & Chem Engn, Hohhot 010000, Peoples R China

2.Hainan Vocat Univ Sci & Technol, Key Lab Med & Edible Plants Resources Hainan Prov, Haikou 571126, Peoples R China

3.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010031, Peoples R China

关键词： Carbon Quantum Dots; Nitrogen-Doped; Sheep Manure; Ion Detection; High-Efficiency

期刊名称：JOURNAL OF FLUORESCENCE （ 影响因子：3.1； 五年影响因子：2.9 ）

ISSN： 1053-0509

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Carbon quantum dots are a new type of fluorescent material with promising application prospects in bioimaging, photocatalysis, and metal ions detection. Biomass is a plentiful and renewable natural resource containing a large amount of carbon, hydrogen and oxygen, and is an ideal precursor for the preparation of carbon quantum dots. Although biomass-based carbon dots possess numerous advantages, there are still several challenges. Specifically, the luminescence mechanism remains unidentified. Additionally, how to control the surface functionalization of biomass-based carbon dots is also a challenge. In this work, nitrogen-doped carbon quantum dots were synthesized sheep manure with glycine under optimized hydrothermal conditions to enhance nitrogen-containing functional groups. The results showed that the nitrogen-doped carbon quantum dots were synthesized when sheep manure mixed with glycine in a mass ratio of 4:1 and reacted at 240 degrees C for 12 h exhibited a quantum yield of 10.63%, a fluorescence lifetime of 7.82 ns, and exceptional stability-retaining fluorescence intensity above 630,855 a.u. after 30 days of storage. Furthermore, the nitrogen-doped carbon quantum dots exhibit high selectivity and sensitivity to Fe3+ (detection limit:4.7 mu M, linear range: 0-200 mu M) along with excellent bioimaging performance in L929 cells, demonstrating their dual-functional applications in both environmental sensing and bioimaging.