g-C3N4 quantum dots: direct synthesis, upconversion properties and photocatalytic application.

@article{Wang2014gC3N4QD,
  title={g-C3N4 quantum dots: direct synthesis, upconversion properties and photocatalytic application.},
  author={Wanjun Wang and Jimmy C. Yu and Zhurui Shen and Donald K.L. Chan and Ting Gu},
  journal={Chemical communications},
  year={2014},
  volume={50 70},
  pages={
          10148-50
        }
}
Graphitic carbon nitride (g-C3N4) quantum dots (CNQDs) were prepared from bulk g-C3N4 directly by a thermal-chemical etching process. The CNQDs show strong blue emission as well as upconversion behavior, which can be used as universal energy-transfer components in visible-light-driven metal-free photocatalytic systems. 

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References

SHOWING 1-10 OF 32 REFERENCES

Facile preparation and upconversion luminescence of graphene quantum dots.

A facile hydrazine hydrate reduction of graphene oxide (GO) with surface-passivated by a polyethylene glycol (PEG) method for the fabrication of graphene quantum dots (GQDs) with frequency

A low-temperature solid-phase method to synthesize highly fluorescent carbon nitride dots with tunable emission.

Highly fluorescent graphitic carbon nitride quantum dots (g-CNQDs) with a quantum yield of 42% are synthesized by a low-temperature solid-phase method with urea and sodium citrate as the precursors.

Upconversion and downconversion fluorescent graphene quantum dots: ultrasonic preparation and photocatalysis.

A facile ultrasonic route for the fabrication of graphene quantum dots (GQDs) with upconverted emission is presented, and it is interesting that the photocatalytic rate of the rutile TiO(2)/GQD complex system is ca.

Fabrication of graphene quantum dots via size-selective precipitation and their application in upconversion-based DSSCs.

A novel approach to synthesize highly luminescent graphene quantum dots (GQDs) with well-defined sizes was explored based on simple oxidation of herringbone-type carbon nanofibers (HCNFs) and

Upconversion fluorescent carbon nanodots enriched with nitrogen for light harvesting

Fluorescent nitrogen-enriched carbon nanodots (C-dots) of 1 to 3 nm were obtained through a one-pot reaction between melamine and glycerol. These C-dots show quantum yields up to 22% and a high

A novel nickel-thiourea-triethylamine complex adsorbed on graphitic C3N4 for low-cost solar hydrogen production.

A low-cost photocatalytic system composed of earth-abundant elements has been synthesized, with the nickel-thiourea-triethylamine catalyst in situ formed on the C3N4 photocatalyst, which exhibits a

Electrophoretic fabrication of highly robust, efficient, and benign heterojunction photoelectrocatalysts based on graphene-quantum-dot sensitized TiO2 nanotube arrays

We report the controllable electrophoretic fabrication of highly robust, efficient, and benign photoelectrocatalysts based on graphene-quantum-dot sensitized TiO2 nanotube arrays. Their catalytic

One-pot synthesis of N-doped carbon dots with tunable luminescence properties

N-Doped carbon dots synthesized by a one-pot solvothermal route displayed tunable luminescence due to different N contents. They could be directly applied in the imaging of peritoneal macrophages of

α-Sulfur crystals as a visible-light-active photocatalyst.

Although the absolute activity obtained was low, there is great potential for increasing the activity with the assistance of known strategies such as surface modification, nanoscaling, doping, and coupling with other photocatalysts.

Photocatalytic Activity Enhanced via g-C3N4 Nanoplates to Nanorods

The transformation of graphitic carbon nitride (g-C3N4) from nanoplates to nanorods was realized by a simple reflux method. The photocatalytic activity and the intensity of the photocurrent response