Open AccessControllable synthesis of Graphene Quantum Dots with Tunable-Photoluminescence
Author(s) -
Yao Lu,
Hao Hu,
Pengcheng Liu,
Yibo Feng,
Jianjun Wang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/2/022073
Subject(s) - quantum dot , graphene , photoluminescence , hydrothermal circulation , luminescence , hydrothermal synthesis , materials science , nanotechnology , electrochemistry , excitation , molecule , optoelectronics , chemical engineering , chemistry , electrode , organic chemistry , physics , quantum mechanics , engineering
Graphene quantum dots (GQDs) have been synthesized via one-pot hydrothermal approach using glucose as precursors. The obtained products have a size around 3.5 nm, which can be controlled by changing the reaction temperature. With the increase of preparation temperatures, the glucose molecules are dehydrated under hydrothermal conditions and then converted to GQDs. The high temperature helps to increase the graphitization degree of GQDs. The GQDs show the blue color emission under excitation of 300-450 nm, which can be used in electrochemical luminescence devices.