In this work, carbon dots (C-dots) were prepared through one-step pulsed laser ablation (PLA) treatment of polymers in aqueous solution. The choice of water-soluble polymers as starting materials could extend the types of carbon sources for PLA reactions.

Feb 4, 2021 · In this work, the synthesis of fluorescent carbon dots (CDs) was performed by nanosecond laser ablation of a graphite target immersed in polyethyleneimine (PEI) and ethylenediamine (EDA), and the synthesis products were separated by dialysis.

May 13, 2024 · The present study reports on an original, environmentally friendly, and low-cost route for the production of carbon dots with an average size of 4 nm by laser ablation in liquid.

Sep 20, 2021 · Various approaches have been used to synthesize CQDs such as (i) top-down pathways, such as the laser ablation technique [12], electrochemical exfoliation (ECE) [13] and the chemical oxidation method (destruction of large carbon materials) [14], or (ii) bottom-up pathways (small precursor composition): microwave-associated synthesis [15], plasma...

Sep 22, 2016 · The synthesis of fluorescent carbon dots-like nanostructures (CNDs) obtained through the laser ablation of a carbon solid target in liquid environment is reported. The ablation process was induced in acetone with laser pulses of 1064, 532, and 355 nm under different irradiation times.

Dec 1, 2020 · Schematic illustration of the preparation process to synthesize CQDs by dual-beam pulsed laser ablation. The inset shows an enlarged image of a carbon cloth in the solvent ablated by a dual-beam pulsed laser. CQD = carbon quantum dot.

Dec 1, 2020 · Here, the CQDs were fabricated through ablation of low-cost carbon cloth by ultrafast and highly efficient dual-beam pulsed laser ablation. Unlike previous reports, a single laser beam is divided into double beams by a beam splitter in this work for shortening laser ablation time and improving ablation yield.

Feb 4, 2021 · In this work, the synthesis of fluorescent carbon dots (CDs) was performed by nanosecond laser ablation of a graphite target immersed in polyethyleneimine (PEI) and ethylenediamine (EDA), and the synthesis products were separated by dialysis.

1 day ago · The laser radiation induces carbon ablation and exfoliation, with an ablation yield of the order of 5 ng/laser pulse. Small carbon dots and larger carbon nanoparticles were synthesized in the solution. A 365 nm UV lamp irradiation of the CDs dispersion induces visible luminescence emission at about 478 nm wavelength, with a typical blue-green ...

Jan 1, 2018 · We have experimentally shown that nanosecond near-IR pulsed laser ablation of a thin amorphous carbon film produces carbon quantum dots with a graphite structure and nanodiamonds with a characteristic size of 20 – 500 nm on the substrate surface.