ArticleMaterials (Basel, Switzerland)2023
Optical Properties of Carbon Dots Synthesized by the Hydrothermal Method.
Article in Materials (Basel, Switzerland), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- Green synthesis of rosehip-derived carbon quantum dots for reusable biocatalysts in sustainable fruit juice clarification.RSC advances · 2026Article
- Biomass tomato pomace as a fluorescence probe for determination of toltrazuril in veterinary pharmaceuticals and milk samples.BMC chemistry · 2026Article
- Green synthesis of bio-compatible carboxylate-functionalized carbon layers of 4 to 26 nm thickness on gold plasmonic nanoparticles.Nanoscale advances · 2026Article
- Green Synthesis of a Reversible "ON-OFF-ON" Fluorescent Sensor for FeJournal of fluorescence · 2026Article
- Eco-friendly fabrication of flag blue flower-derived CQD-doped chitosan films with tunable optical and photoluminescent properties.Scientific reports · 2025Article
- Reproducibility roadblocks and standardization in carbon dot synthesis: a critical review of current practices, challenges, and future directions.Mikrochimica acta · 2025Review
- Dual-emission nitrogen-doped carbon dots for ratiometric and smartphone-based detection of levofloxacin.RSC advances · 2025Article
- Broccoli to the Lab: Green-Synthesized N-CQDs for Ultrasensitive "Turn-On" Detection of Norfloxacin in Food.Sensors (Basel, Switzerland) · 2025Article
- Synthesis of Multicolor Carbon Dots Catalyzed by Inorganic Salts with Tunable Nonlinear Optical Properties.Materials (Basel, Switzerland) · 2023Article
- Nitrogen- and Sulfur-Codoped Strong Green Fluorescent Carbon Dots for the Highly Specific Quantification of Quercetin in Food Samples.Materials (Basel, Switzerland) · 2023Article
- Large-Scale Synthesis of Tunable Fluorescent Carbon Dots Powder for Light-Emitting Diodes and Fingerprint Identification.Molecules (Basel, Switzerland) · 2023Article
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3 authors.
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Abstract
In this study, the optical and structural properties of carbon dots (CDs) synthesized using a hydrothermal method were investigated. CDs were prepared from various precursors such as citric acid (CA), glucose, and birch bark soot. The SEM and AFM results show that the CDs are disc-shaped nanoparticles with dimensions of ~7 nm × 2 nm for CDs from CA, ~11 nm × 4 nm for CDs from glucose, and ~16 nm × 6 nm for CDs from soot. The TEM images of CDs from CA showed stripes with a distance of 0.34 nm between them. We assumed that the CDs synthesized from CA and glucose consisted of graphene nanoplates located perpendicular to the disc plane. The synthesized CDs contain oxygen (hydroxyl, carboxyl, carbonyl) and nitrogen (amino, nitro) functional groups. CDs have strong absorption in the ultraviolet region in the range of 200-300 nm. All CDs synthesized from different precursors displayed bright luminescence in the blue-green region of the spectrum (420-565 nm). We found that the luminescence of CDs depended on the synthesis time and type of precursors. The results show that the radiative transitions of electrons occur from two levels with energies ~3.0 eV and ~2.6 eV, which are due to the presence of functional groups.
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