JIN-PING LIU, XIN LI, RUI-RONG WANG, et al. Preparation of Graphene Quantum Dots by Laser-induced Polydimethylsiloxane. [J]. Chinese journal of luminescence, 2021, 42(12): 1900-1905.
DOI:
JIN-PING LIU, XIN LI, RUI-RONG WANG, et al. Preparation of Graphene Quantum Dots by Laser-induced Polydimethylsiloxane. [J]. Chinese journal of luminescence, 2021, 42(12): 1900-1905. DOI: 10.37188/CJL.20210251.
Preparation of Graphene Quantum Dots by Laser-induced Polydimethylsiloxane增强出版
green and low-cost methods to synthesize graphene quantum dots(GQDs) has always been a hot topic pursued and explored by researchers. In this paper
a simple and low-cost laser-induced polydimethylsiloxane(PDMS) method was used to successfully prepare the defective graphene with few layers. Then
using the prepared graphene as carbon source
the GQDs with good dispersion
transverse average size of about 6.67 nm and stable blue fluorescence GQDs solution were successfully prepared by one-step hydrothermal method. The morphology and blue fluorescence characteristics of GQDs were characterized by transmission electron microscopy(TEM)
Raman spectroscopy
UV absorption spectroscopy and fluorescence spectroscopy. Taking quinine sulfate as the standard reference
the calculated fluorescence quantum yield of GQDs is about 6.3%. The method of preparing GQDs proposed in this study has the advantages of simplicity
low cost and low pollution. It provides a new way and new reference for the preparation of GQDs
and also provides potential for the large-scale commercial preparation of GQDs.
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