柠檬汁高发光碳量子点的绿色合成

IF 3.9 Q2 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanotechnology Pub Date : 2019-05-02 DOI:10.1155/2019/2852816
B. Hoan, P. D. Tam, Vuong-Hung Pham
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引用次数: 89

摘要

以柠檬汁为原料,采用一锅简单水热法合成了高发光碳点(C-dots),通过不同的温度、时间、前驱体老化和稀释溶剂来控制C-dots的发光。采用高分辨率透射电镜、x射线光电子能谱、傅里叶变换红外分光光度法、动态光散射法、紫外可见分光光度法和光致发光分光光度法对所得c点进行了表征。结果表明,C - dots具有较强的绿光发射,量子产率随热液温度的变化在14.86 ~ 24.89%之间。此外,还观察到光发射与水热时间、前驱体老化和稀释溶剂有关。这些结果表明,C - dots在光电子学和生物成像方面具有潜在的应用前景。
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Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice
Highly luminescent carbon dots (C-dots) were synthesized by the one-pot simple hydrothermal method directly from lemon juice using different temperatures, time, aging of precursors, and diluted solvents to control the luminescence of C‐dots. The obtained C-dots were characterized by high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectrophotometry, dynamic light scattering, ultraviolet-visible spectrophotometry, and photoluminescent spectrophotometry. The results show that C‐dots had strong green light emission with quantum yield in the range of 14.86 to 24.89% as a function of hydrothermal temperatures. Furthermore, light emission that is dependent on hydrothermal time, aging of precursor, and diluted solvent was observed. These results suggest that the C‐dots have potential application in optoelectronics and bioimaging.
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来源期刊
Journal of Nanotechnology
Journal of Nanotechnology NANOSCIENCE & NANOTECHNOLOGY-
CiteScore
5.50
自引率
2.40%
发文量
25
审稿时长
13 weeks
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