Preparation of CQDs with hydroxyl function for Fe3+ detection

被引：14

作者：

Dong, Limin ^{[1
,2
]}

Zhang, Wanqi ^{[1
]}

Li, Xuejiao ^{[1
]}

Geng, Xiaoyao ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Heilongjiang Dept Educ, Coll Mat Sci & Engn, Harbin, Heilongjiang, Peoples R China

[2] Harbin Univ Sci & Technol, Key Lab Engn Dielect & Its Applicat, Minist Educ, Harbin, Heilongjiang, Peoples R China

来源：

MICRO & NANO LETTERS | 2019年 / 14卷 / 04期

关键词：

carbon; fluorescence; quantum dots; radiation quenching; nanofabrication; nanostructured materials; microwave materials processing; C; ethanol; agglomeration; up-conversion fluorescence properties; fluorescence stability; Fe3+ detection; fluorescence intensity; fluorescence quenching; metal ion detection; hydrothermal method; solvothermal method; microwave method; carbon-quantum dots; hydroxyl function; GRAPHENE QUANTUM DOTS; FLUORESCENT CARBON NANOPARTICLES;

D O I：

10.1049/mnl.2018.5369

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Owing to its excellent fluorescence stability, unique up-conversion fluorescence properties and biocompatibility, carbon-quantum dots (CQDs) have become a research hot spot in the field of carbon materials. This study used a series of different preparation strategies to synthesise CQDs such as microwave method, solvothermal method and hydrothermal method. The prepared quantum dots can be further applied to design and metal ion detection. It is worth noting that the CQDs prepared by the hydrothermal method are evenly distributed in the range of 2-3 nm without any agglomeration. Fluorescence quenching was performed by Fe3+, and the introduction of PO43- ion could increase the fluorescence intensity of CQDs-Fe3+ system. Furthermore, CQDs were hydroxyl functionalised by treating with ethanol. The functionalised CQDs synthesised by solvothermal method greatly enhanced the fluorescence intensity.

引用

页码：440 / 444

页数：5

共 23 条

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