Microwave-assisted synthesis of graphene quantum dots and nitrogen-doped graphene quantum dots: Raman characterization and their optical properties

2019 ◽  
Vol 10 (2) ◽  
pp. 025005 ◽  
Author(s):  
Hai Yen Nguyen ◽  
Xuan Hung Le ◽  
Nguyen Thuan Dao ◽  
Nam Thang Pham ◽  
Thi Hong Hanh Vu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Quantum Dots ◽  
Microwave Assisted Synthesis ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Raman Characterization

scholarly journals Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties

Nanophotonics ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 259-267 ◽  
Author(s):  
Binjie Zheng ◽  
Yuanfu Chen ◽  
Pingjian Li ◽  
Zegao Wang ◽  
Bingqiang Cao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Quantum Dots ◽  
Microwave Assisted Synthesis ◽  
Scale Production ◽  
Excitation Spectra ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

AbstractFor the first time, a facile, ultrafast, ammonia-driven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale production. The as-synthesized NGQDs consisting of one to three graphene monolayers exhibit highly crystalline quality with an average size of 5.3 nm. A new fluorescence (FL) emission peak at 390 nm is observed, which might be attributed to the doped nitrogen atoms into the GQDs. An interesting red-shift is observed by comparing the FL excitation spectra to the UV-visible absorption spectra. Based on the optical properties, the detailed Jablonski diagram representing the energy level structure of NGQDs is derived.

Variation of Optical Properties of Nitrogen-doped Graphene Quantum Dots with Short/Mid/Long-wave Ultraviolet for the Development of the UV Photodetector

2019 ◽  
Vol 11 (42) ◽  
pp. 39035-39045 ◽  
Author(s):  
Md Tanvir Hasan ◽  
Roberto Gonzalez-Rodriguez ◽  
Conor Ryan ◽  
Jeffery L. Coffer ◽  
Anton V. Naumov
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Quantum Dots ◽  
Uv Photodetector ◽  
Nitrogen Doped ◽  
Long Wave ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Nitrogen-doped graphene quantum dots: Optical properties modification and photovoltaic applications

Nano Research ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 1041-1047 ◽  
Author(s):  
Md Tanvir Hasan ◽  
Roberto Gonzalez-Rodriguez ◽  
Conor Ryan ◽  
Kristof Pota ◽  
Kayla Green ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Quantum Dots ◽  
Nitrogen Doped ◽  
Photovoltaic Applications ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

scholarly journals Tailoring fluorescence emissions, quantum yields, and white light emitting from nitrogen-doped graphene and carbon nitride quantum dots

Nanoscale ◽  
2019 ◽  
Vol 11 (35) ◽  
pp. 16553-16561 ◽  
Author(s):  
Siyong Gu ◽  
Chien-Te Hsieh ◽  
Yasser Ashraf Gandomi ◽  
Jianlin Li ◽  
Xing Xing Yue ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Nitride ◽  
Solid Phase ◽  
Graphene Quantum Dots ◽  
Quantum Yields ◽  
Light Emitting ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Highly fluorescent N-doped graphene quantum dots (NGQDs) and graphitic carbon nitride quantum dots (CNQDs, g-C3N4) were synthesized using a solid-phase microwave-assisted (SPMA) technique.

scholarly journals Differentiating the impact of nitrogen chemical states on optical properties of nitrogen-doped graphene quantum dots

RSC Advances ◽  
2017 ◽  
Vol 7 (76) ◽  
pp. 48263-48267 ◽  
Author(s):  
Timothy Pillar-Little ◽  
Doo Young Kim
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Hydrothermal Treatment ◽  
Graphene Quantum Dots ◽  
Top Down ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Chemical States ◽  
The Impact

The optical properties of top-down synthesized oxidized graphene quantum dots (ox-GQDs) and nitrogen-incorporating graphene quantum dots (N-GQDs) along a range of hydrothermal treatment temperatures were observed.

Tannin-based thin-film composite membranes integrated with nitrogen-doped graphene quantum dots for butanol dehydration through pervaporation

2021 ◽  
Vol 623 ◽  
pp. 119077
Author(s):  
Rumwald Leo G. Lecaros ◽  
Reincess E. Valbuena ◽  
Lemmuel L. Tayo ◽  
Wei-Song Hung ◽  
Chien-Chieh Hu ◽  
...  
Keyword(s):  
Thin Film ◽  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Composite Membranes ◽  
Film Composite ◽  
Nitrogen Doped ◽  
Thin Film Composite ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Sulfur and nitrogen-doped graphene quantum dots/PANI nanocomposites for supercapacitors

2021 ◽  
Author(s):  
Hemalatha Kuzhandaivel ◽  
Sornalatha Manickam ◽  
Suresh Kannan Balasingam ◽  
Manik Clinton Franklin ◽  
Hee-Je Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Charge Storage ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Supercapacitor Applications ◽  
Storage Properties

Sulfur and nitrogen-doped graphene quantum dots/polyaniline nanocomposites were synthesized and their electrochemical charge storage properties were tested for supercapacitor applications.

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