Surface modification and performance of nitrogen-doped carbon quantum dots

被引：0

作者：

Guo T. ^{[1
]}

Ma X.-R. ^{[1
]}

Wang Q. ^{[1
]}

Jin L.-E. ^{[1
]}

Cao Q. ^{[1
]}

机构：

[1] College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan

来源：

Cao, Qing (qcao2000@163.com) | 1600年 / Zhejiang University卷 / 35期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Carbon quantum dots (CQDs); Compound system; Surface activity; Surface modification;

D O I：

10.3969/j.issn.1003-9015.2021.06.014

中图分类号：

学科分类号：

摘要：

Studies of carbon quantum dots in immiscible solution systems are difficult. A surface modification method was proposed for surface modification of carbon quantum dots. Citric acid was used as the carbon source and 3-dimethylaminopropylamine as the nitrogen doping agent, and a hydrothermal method was applied to prepare nitrogen-doped carbon quantum dots (N-CQDs). Tertiary amine and primary amines of N-CQDs with halogenated hydrocarbons were then used to obtain amphiphilic nitrogen-doped carbon quantum dot R-(N-CQDs) and R-(N-CQDs)-L with long carbon chains. The results show that the synthesized N-CQDs are spherical with high dispersibility and strong fluorescence emitted at an excitation wavelength of 340 nm. R-(N-CQDs)-L exhibits greater surface tension and performs better in emulsification and foaming than R-(N-CQDs). The combination of R-(N-CQDs)-L and sodium dodecyl sulfate (SDS) produces a significant synergistic effect, thus providing a novel solution to improve the amphiphilic nature of carbon quantum dots and widen the scope of their practical applications. © 2021, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.

引用

页码：1060 / 1066

页数：6

共 24 条

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