scholarly journals Engineered N-doped graphene quantum dots/CoFe2O4 spherical composites as a robust and retrievable catalyst: fabrication, characterization, and catalytic performance investigation in microwave-assisted synthesis of quinoline-3-carbonitrile derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (55) ◽  
pp. 34724-34734
Author(s):  
Pouria Babaei ◽  
Javad Safaei-Ghomi
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Catalytic Performance ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Doped Graphene

Sustainable fabrication of spherical N-GQDs/CoFe2O4 nanocomposites as a novel magnetically retrievable catalyst for the synthesis of quinoline-3-carbonitrile derivatives has been developed.

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.

Transforming glucose into fluorescent graphene quantum dots via microwave radiation for sensitive detection of Al3+ ions based on aggregation-induced enhanced emission

The Analyst ◽  
2020 ◽  
Vol 145 (21) ◽  
pp. 6981-6986 ◽  
Author(s):  
Maomao Yao ◽  
Jinkun Huang ◽  
Zihao Deng ◽  
Wenying Jin ◽  
Yali Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Microwave Radiation ◽  
Fluorescence Detection ◽  
Graphene Quantum Dots ◽  
Sensitive Detection ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

This work initially describes the microwave-assisted synthesis of graphene quantum dots (GQDs) for fluorescence detection of Al3+ ions based on the analyte-mediated aggregation of GQDs leading to aggregation-induced enhanced emission (AIEE).

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.

Graphene quantum dot-decorated carbon electrodes for energy storage in vanadium redox flow batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (14) ◽  
pp. 7834-7842 ◽  
Author(s):  
Michael C. Daugherty ◽  
Siyong Gu ◽  
Doug S. Aaron ◽  
Ryan E. Kelly ◽  
Yasser Ashraf Gandomi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Carbon Nitride ◽  
Solid Phase ◽  
Graphene Quantum Dots ◽  
Carbon Electrodes ◽  
Graphene Quantum Dot ◽  
Microwave Assisted ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Vanadium Redox

Nitrogen-doped graphene quantum dots (GQDs) and graphitic carbon nitride (g-C3N4) quantum dots are synthesized via a solid-phase microwave-assisted (SPMA) technique.

scholarly journals Enhanced Fenton-like catalytic performance of N-doped graphene quantum dot incorporated CuCo2O4

2018 ◽  
Vol 42 (11) ◽  
pp. 9209-9220 ◽  
Author(s):  
Mohsen Nekoeinia ◽  
Farideh Salehriahi ◽  
Omran Moradlou ◽  
Hojjat Kazemi ◽  
Saeed Yousefinejad
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Solvothermal Method ◽  
Graphene Quantum Dots ◽  
Catalytic Performance ◽  
Heterogeneous Fenton ◽  
Graphene Quantum Dot ◽  
Doped Graphene

In the present study, a novel nanocomposite based on CuCo2O4 and N-doped graphene quantum dots (N-GQDs) as an iron-free heterogeneous Fenton-like catalyst was prepared by a two-step solvothermal method.

Nitrogen-doped graphene quantum dots anchored on NiFe layered double-hydroxide nanosheets catalyze the oxygen evolution reaction

2020 ◽  
Vol 44 (41) ◽  
pp. 17744-17752
Author(s):  
Qibing Dong ◽  
Chao Shuai ◽  
Zunli Mo ◽  
Zhenyu Liu ◽  
Guigui Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Graphene Quantum Dots ◽  
Catalytic Performance ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Double Hydroxide

N-GQDs/NiFe-LDH layered nanosheet structure has excellent OER catalytic performance.

Microwave-Assisted Synthesis of Nitrogen-Doped Multi-Layer Graphene Quantum Dots with Oxygen-Rich Functional Groups

2016 ◽  
Vol 69 (3) ◽  
pp. 357 ◽  
Author(s):  
Xiaobei Hou ◽  
Yibing Li ◽  
Chuan Zhao
Keyword(s):  
Quantum Dots ◽  
Functional Groups ◽  
Graphene Quantum Dots ◽  
Atomic Ratio ◽  
Microwave Assisted Synthesis ◽  
Graphene Layers ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Layer Graphene ◽  
Potential Applications

Strong green-luminescent nitrogen-doped multi-layer graphene quantum dots (N-GQDs) have been prepared via a microwave-assisted hydrothermal method using glucose and urea as the starting materials. The fabricated N-GQDs show a highly crystalline structure and consist of ~3–10 graphene layers with an N/C atomic ratio 5.7 %. The wavelength-dependent luminescence emission behaviour is observed with a photoluminescence quantum yield of 5.2 %. The combination of the unique optical properties introduced by nitrogen doping with the high solubility in aqueous medium offered by the surface oxygen-rich functional groups in N-GQDs provides additional advantages for their potential applications in biolabelling and bioimaging.

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