Synthesis, Characterization and Ecotoxicity Evaluation of Biochar-Derived Carbon Dots from Spruce Tree, Purple Moor-Grass and African Oil Palm
| Autor: | Jersson Placido, Martha E. Londoño, Marisol Jaramillo, Kaory Barrientos, Sandra Bustamante, Juan Pablo Arango, Maria I. Gaviria |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_element
Bioengineering TP1-1185 02 engineering and technology 010402 general chemistry Elaeis guineensis 01 natural sciences Fluorescence spectroscopy Dynamic light scattering Spectrophotometry carbon dots Biochar medicine Chemical Engineering (miscellaneous) biochar QD1-999 medicine.diagnostic_test biology ecotoxicity Chemical technology nanoparticle Process Chemistry and Technology Molinia caerulea 021001 nanoscience & nanotechnology biology.organism_classification 0104 chemical sciences Chemistry chemistry Environmental chemistry fluorescence Ecotoxicity 0210 nano-technology Carbon |
| Zdroj: | Processes Volume 9 Issue 7 Processes, Vol 9, Iss 1095, p 1095 (2021) |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr9071095 |
| Popis: | Biochar-derived C-Dots from Picea, Molinia caerulea and Elaeis guineensis were synthesized through a hydrothermal process, and their physicochemical and optical characteristics and environmental effects were compared. These C-Dots were characterized by techniques such as Attenuated Total Reflection–Fourier Transform Infrared (ATR-FTIR), UV-Vis spectrophotometry, fluorescence spectroscopy, dynamic light scattering (DLS), Z potential, and High-Resolution Transmission Electronical Microscopy (HR-TEM). The ecotoxicity tests were performed using the Microtox™ test, making this study one of the few that use this method. The C-Dots from Molinia caerulea showed the best quantum yield (QY) of 8.39% and moderate ecotoxicity, while Elaeis guineensis has the lowest QY (2.31%) but with zero toxicity. Furthermore, the C-Dots from Picea presents good optical properties but showed high toxicity and limits its use. Finally, all C-Dots showed functional groups that could be biofunctionalized with biomolecules, especially C-Dots from Molinia caerulea and Elaeis guineensis show potential for use in the development of optical biosensors. |
| Databáze: | OpenAIRE |
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