Facile synthesis of graphene quantum dots and their optical characterization

被引：8
|
作者：
Samra, Kawaljeet Singh [1 ]
Manpreet [1 ]
Singh, Amandeep [1 ]
机构：
[1] Lovely Profess Univ, Dept Phys, Phagwara 144411, Punjab, India
来源：
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2021年 / 29卷 / 08期
关键词：
Graphene quantum dots; coke; citric acid; top-down approach; bottom-up approach;
D O I：
10.1080/1536383X.2021.1878152
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Graphene quantum dots (GDQs) were synthesized from citric acid (CA) and coke (C), by using a bottom up and a top-down approach, respectively. The synthesized GQDs were characterized using FTIR, UV-visible, Raman and photo-luminescence (PL) spectroscopies. Substantial variation in their optical emission behavior was observed. All emission spectra of GQDs extracted from CA, were centered at 460 nm, but a red shift was observed with the increase of excitation wavelength, in the emission curves of C-GQDs. So, in this work the comparison of optical behavior of GQDs derived from citric acid and coke has been done and relevant discussion is reported.
引用
收藏
页码：638 / 642
页数：5
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