一步水热法合成的石墨烯量子点及其在锰离子探测中的应用

吴春霞; 宋泽琳

doi:10.3788/fgxb20153604.0413

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一步水热法合成的石墨烯量子点及其在锰离子探测中的应用

材料合成及性能 | 更新时间：2020-08-12

- 一步水热法合成的石墨烯量子点及其在锰离子探测中的应用
- One-step Hydrothermal Synthesis of Graphene Quantum Dots and The Application for Mn²⁺ Detection
- 发光学报 2015年36卷第4期页码：413-418
- 作者机构：
  
  1. 江苏大学江苏省重点实验室光子制造科学与技术中心,江苏镇江,212013
  2. 东南大学生物电子学国家重点实验室,江苏南京,210096
- 作者简介：
- 基金信息：
  
  国家自然科学基金(11304127)();东南大学生物电子学国家重点实验室开放课题(1721220150)();江苏大学高级人才专项(1283000262) 资助项目()
- DOI：10.3788/fgxb20153604.0413
  中图分类号： O482.31
- 纸质出版日期：2015-4-3，
  
  收稿日期：2014-12-18，
  
  修回日期：2015-2-2，
扫描看全文
吴春霞, 宋泽琳,. 一步水热法合成的石墨烯量子点及其在锰离子探测中的应用[J]. 发光学报, 2015,36(4): 413-418

WU Chun-xia, SONG Ze-lin,. One-step Hydrothermal Synthesis of Graphene Quantum Dots and The Application for Mn<sup>2+</sup> Detection[J]. Chinese Journal of Luminescence, 2015,36(4): 413-418
吴春霞, 宋泽琳,. 一步水热法合成的石墨烯量子点及其在锰离子探测中的应用[J]. 发光学报, 2015,36(4): 413-418 DOI： 10.3788/fgxb20153604.0413.

WU Chun-xia, SONG Ze-lin,. One-step Hydrothermal Synthesis of Graphene Quantum Dots and The Application for Mn<sup>2+</sup> Detection[J]. Chinese Journal of Luminescence, 2015,36(4): 413-418 DOI： 10.3788/fgxb20153604.0413.

摘要

以还原氧化石墨烯为前驱体

采用一步水热法成功制备出了近似球状、分散性良好、尺寸均一的石墨烯量子点。通过傅立叶红外光谱(FTIR)、紫外-可见吸收光谱、荧光光谱等光学手段对样品的结构和光学性能进行了表征

结果显示制备的石墨烯量子点表面含有丰富的含氧官能团

在紫外区有很强的吸收

发射峰强而窄

表现出激发波长不依赖的荧光性能。研究结果表明石墨烯量子点可应用于Mn

微量探测

石墨烯量子点的荧光强度会随着所加入的Mn

浓度的增大而降低

在0~400 mol/L间的校准曲线呈线性相关。

Abstract

Using reduced oxide graphene (RGO) as precursor

the monodispersed spherical graphene quantum dots (GQDs) with uniform size were prepared by one-step hydrothermal method. The morphology

structure and optical properties of the samples were characterized by TEM

AFM

FTIR

UV-visible spectroscopy and photoluminescence spectra. The GQDs that contain many oxygen functional groups on their surface show a strong absorption band at UV region

and a very strong

narrow and excitation-independent emission peak. When Mn

ions were added into the GQDs solution

the fluorescence significantly quenched with the concentration of Mn

. The calibration curve is linear over the range of 0-400 mol/L. The result indicates that GQDs can serve as a fluorescent sensing platform for Mn

detection.

关键词

石墨烯量子点一步水热法荧光锰离子探测

Keywords

GQDsone-step hydrothermal methodphotoluminescenceMn2+ detection

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