期刊论文

Preparation and Characterization of Carbon Quantum Dots by Pulse Potential Method

中文

广州化学

1009-220X

2017

42

5

36-40

10.16560/j.cnki.gzhx.20170514

国家自然科学基金青年项目（21305039） 湖南省自然科学基金青年项目（14JJ3097） 湖南农业大学人才科学基金（12YJ05）

本校为第一机构

以乙醇为碳源,邻苯二胺为掺杂剂,采用脉冲电位法制备了发黄色荧光的碳量子点,并对其性能进行了表征。透射电镜表明制备的碳量子点尺寸在5 nm以内,紫外光谱表明碳量子点有两个吸收峰,荧光光谱表明所制备的碳量子点在552 nm处具有独立于激发波长的发射峰,且具有较好的抗盐性和抗酸碱性。此外考察了碳量子点对金属离子的响应性能,结果表明该碳量子点在选择性检测Fe~（3＋）方面具有潜在的应用价值。

The carbon quantum dots with yellow fluorescence were prepared by pulsed potential method using ethanol as the carbon source and o-phenylenediamine as dopant, and their properties were characterized. TEM showed that the size of the prepared nanoparticles was within 5 nm. UV-Vis spectroscopy showed that there were two absorption peaks for carbon quantum dots. Fluorescence spectroscopyshowed that carbon quantum dots had an excitation-independent emission at 552 nm with good stability in concentrated salt solutions and acid-base solution. In addit...