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[1]韩会凯,黄金城,齐航,等.pH对水热法制备碳点产率的影响[J].南京工业大学学报(自然科学版),2019,41(03):293-299.[doi:10.3969/j.issn.1671-7627.2019.03.004]
 HAN Huikai,HUANG Jincheng,QI Hang,et al.Effects of pH value on the yield of carbon dots prepared by hydrothermal method[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(03):293-299.[doi:10.3969/j.issn.1671-7627.2019.03.004]
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pH对水热法制备碳点产率的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年03期
页码:
293-299
栏目:
出版日期:
2019-05-28

文章信息/Info

Title:
Effects of pH value on the yield of carbon dots prepared by hydrothermal method
文章编号:
1671-7627(2019)03-0293-07
作者:
韩会凯1黄金城1齐航2卢都友1
1.南京工业大学 材料科学与工程学院,江苏 南京 211800; 2.滁州市量子光电有限公司,安徽 滁州 239000
Author(s):
HAN Huikai1HUANG Jincheng1QI Hang2LU Duyou1
1. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China; 2. Chuzhou Quantum Optoelectronic Co. Ltd., Chuzhou 239000, China
关键词:
水热反应 碳点 pH效应 柠檬酸 分布系数
Keywords:
hydrothermal reaction carbon dot pH effect citric acid distribution coefficient
分类号:
O648
DOI:
10.3969/j.issn.1671-7627.2019.03.004
文献标志码:
A
摘要:
为探索水热法制备高产率碳点(CDs),以柠檬酸(CA)和乙二胺(EDA)混合水溶液为研究体系,基于物料分布系数计算研究反应溶液pH对CDs产率的影响。采用紫外-可见吸收光谱(UV-Vis)、荧光发射光谱(PL)、质谱(MS)等手段表征CDs的荧光性能。结果表明:基于溶液中物料分布系数计算,获得CDs产率最大时的溶液pH为5.5,并于该pH条件下制备了产率最高且荧光量子效率(QY)高达73.1%的CDs。基于分布系数计算预测CDs最大产率的方法同样可用于CA与其他胺类体系CDs的水热法制备。
Abstract:
In order to prepare the high yield carbon dots(CDs)by hydrothermal method, the effect of pH value of reaction solution on the yield of CDs was investigated based on the distribution coefficient calculation of various species in the mixed aqueous solution of citric acid(CA)and ethylenediamine(EDA). The fluorescence properties of the obtained CDs were characterized by UV-visible absorption spectra(UV-Vis), fluorescence emission spectroscopy(PL)and mass spectrometry(MS). Results showed that the pH value of maximum yield obtained by the calculation of distribution coefficient was 5.5, and at such a pH value, the CDs with the highest yield and fluorescence quantum efficiency(QY)of 73.1% was obtained. The method of predicting the maximum yield of CDs based on the distribution coefficient calculation could also be used for hydrothermal synthesis of CDs with CA and other amine systems.

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备注/Memo

备注/Memo:
收稿日期:2018-04-12
基金项目:江苏高校优势学科建设工程
作者简介:韩会凯(1993—),男,E-mail:hanhuikai1993@163.com; 卢都友(联系人),教授,E-mail:duyoulu@njtech.edu.cn.
引用本文:韩会凯,黄金城,齐航,等.pH对水热法制备碳点产率的影响[J].南京工业大学学报(自然科学版),2019,41(3):293-299..
更新日期/Last Update: 2019-05-30