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Facile, gram-scale and eco-friendly synthesis of multi-color graphene quantum dots by thermal-driven advanced oxidation process
Lyu, BW; Li, HJ; Xue, FF; Sai, LM; Gui, BJ; Qian, DJ; Wang, XY; Yang, JH
2020-05-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
SubtypeArticle
AbstractGraphene quantum dots (GQDs) have been demonstrated of great potential and benefits in the fields of bioimaging and white light-emitting-diodes (WLEDs). However, it is still highly demanding at the current level to solve the dilemma of achieving high-yield GQDs of good quality and superior fluorescent property using low-cost sustainable and industrializable production procedure. In this work, we for the first time report the gram-scale synthesis of well-crystalline GQDs with ultra-small size based on thermal-driven Advanced Oxidation Process (AOP) under facile green hydrothermal conditions. The average yield calculated from 20 trials reached up to 60%, and the average size of the dots was measured to be similar to 3.7 nm. Furtherly, GQDs with the photoluminescence (PL) emission of blue, green, yellow, orange, and red have been prepared by expanding the pi-conjugation and introducing graphite nitrogen in the carbon skeleton based on chemical structure engineering. The PL-tunable GQDs have an average size distribution of 2-5 nm and a lamellar structure of 2-6 layers. Structure analysis results have indicated that the red shift of PL emission is attributed to bandgap narrowing. This approach successfully converts the easily available and cheap precursor into high-valued products with great application potentials. The PL-tunable GQDs have been successfully used as fluorescent probes of good biocompatibility for in vitro/ in vivo bio-imaging and to produce highly-photostable white-light-emitting composite film with a quantum yield (QY) of 24%.
DOI10.1016/j.cej.2020.124285
WOS KeywordCARBON DOTS ; FENTON REACTION ; RED ; EFFICIENT ; FLUORESCENCE ; EMISSION ; PHOTOLUMINESCENCE ; OXIDE ; CONFINEMENT ; CONVERSION
Language英语
WOS Research AreaEngineering
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28061
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Lyu, BW,Li, HJ,Xue, FF,et al. Facile, gram-scale and eco-friendly synthesis of multi-color graphene quantum dots by thermal-driven advanced oxidation process[J]. CHEMICAL ENGINEERING JOURNAL,2020.
APA Lyu, BW.,Li, HJ.,Xue, FF.,Sai, LM.,Gui, BJ.,...&Yang, JH.(2020).Facile, gram-scale and eco-friendly synthesis of multi-color graphene quantum dots by thermal-driven advanced oxidation process.CHEMICAL ENGINEERING JOURNAL.
MLA Lyu, BW,et al."Facile, gram-scale and eco-friendly synthesis of multi-color graphene quantum dots by thermal-driven advanced oxidation process".CHEMICAL ENGINEERING JOURNAL (2020).
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