Open AccessRapid hydrothermal method for the preparation of carbon quantum dots in the presence of hydrogen peroxide
Author(s) -
Qin JinLan,
Li ShanJi,
Yuan NingNing,
Chen Ying,
Lei BingFu,
Hu ChaoFan,
Liu YingLiang
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0529
Subject(s) - hydrogen peroxide , biocompatibility , hydrothermal circulation , luminescence , nanomaterials , fourier transform infrared spectroscopy , x ray photoelectron spectroscopy , carbon fibers , materials science , fluorescence , photochemistry , quantum dot , chemistry , nanotechnology , chemical engineering , optoelectronics , organic chemistry , composite number , optics , composite material , physics , engineering , metallurgy
Carbon quantum dots (CQDs) have been studied for years as one of the most promising fluorescent nanomaterials. Herein, CQDs were prepared rapidly by a simple, eco‐friendly one‐pot hydrothermal method in the presence of hydrogen peroxide. Different sizes of CQDs are obtained by changing the reaction time. X‐ray photoelectron spectroscopy and Fourier transform infrared spectrometry demonstrated the existence of a large number of oxygen‐containing groups on the surface of CQDs. The as‐prepared CQDs exhibited bright yellow luminescence under UV light, they are applied for bioimaging of HeLa cells, and showed bright luminescence and excellent biocompatibility.