原子与分子物理学报2016，Vol.33Issue(2)：371-376,6.DOI:103969/j.issn.1000-0364.2016.04.032
石墨烯量子点:制备及检测乙醇-水溶液组分
Graphene quantum dots: preparation and detection of ethanol content in an aqueous solution
摘要
Abstract
Improved graphene quantum dot preparation method based on incomplete carbonization of citric acid was developed. X-ray powder diffraction demonstrates the formation of graphene structure. The produced quan-tum dots have an average particle size of approximately 6 nm. The wavelengths of excitation, emission, and uv-visible absorption peaks are 355, 458, and 360 nm, respectively. Because ethanol may inhibit the protonation of the zigzag sites of graphene quantum dots, protecting the emissive triple carbine and active quantum dot fluores-cence states, its content in water can be estimated by the fluorescence intensity of the quantum dots. In the scope of 0. 01 to 100%, the ethanol volume ratio increases linearly with increasing fluorescence intensity at the emis-sion peak with a fluorescence-to-volume ratio constant of about 0. 125. This research provides reference infor-mation for graphene quantum dot preparation. And it also presents a facile method to measure the ethanol content in water at a relatively wide range.关键词
传感器/石墨烯量子点/乙醇含量/荧光光谱Key words
Biosensor/Graphene quantum dot/Ethanol content/Fluorescence spectrum分类
数理科学引用本文复制引用
张国梁,哈丽旦·居马汗,靳浪平,朱涛,蒋中英..石墨烯量子点:制备及检测乙醇-水溶液组分[J].原子与分子物理学报,2016,33(2):371-376,6.基金项目
国家自然科学基金(21264016, 21364016) （21264016, 21364016）
