Synthesis and characterization of N and S codoped carbon dots
1. School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Abstract： A simple and novel synthesis method of carbon dots (CDots) was proposed via direct acid hydrolysis of malic acid, ethylenediamine and Lcysteine in onestep hydrothermal treatment. The morphology, structure, composition and optical properties of carbon quantum dots were tested. The optimized conditions for preparation of CDots were determined with reaction temperature of 150 ℃, pH value of 8.0 and reaction time of 24 h. The results show that the novel N,S codoped CDots have uniform particle size distribution and good water solubility. According to Xray diffraction patterns, the prepared N,SCDots mainly consist of C, N, O and S elements, and N and S elements exist in the form of amino group and sulfonic acid group, respectively. The fluorescence quantum yield of the prepared N,SCDots reaches 23.84% with good fluorescence properties for bioapplication.
卢庆, 王丽, 梁国熙. 新型N,S共掺杂碳量子点的制备及其性能[J]. 江苏大学学报（自然科学版）, 2018, 39(4): 459-464.
LU Qing, WANG Li, LIANG Guo-Xi. Synthesis and characterization of N and S codoped carbon dots[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2018, 39(4): 459-464.
2018, Vol. 39 
