Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels
Waste peels are considered an environmental burden and typically disposed in landfills. The aim of this study was to investigate the effects of various solvents on the luminescence properties of carbon quantum dots (CQDs). Watermelon peels were recycled and reuse as precursors for the synthesis of b...
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| Format: | Article |
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Springer New York
2023
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| author | Zaini, Muhammad Safwan Liew, Josephine Ying Chyi Paiman, Suriati Tee, Tan Sin Kamarudin, Mazliana Ahmad |
| author_facet | Zaini, Muhammad Safwan Liew, Josephine Ying Chyi Paiman, Suriati Tee, Tan Sin Kamarudin, Mazliana Ahmad |
| author_sort | Zaini, Muhammad Safwan |
| collection | UPM |
| description | Waste peels are considered an environmental burden and typically disposed in landfills. The aim of this study was to investigate the effects of various solvents on the luminescence properties of carbon quantum dots (CQDs). Watermelon peels were recycled and reuse as precursors for the synthesis of biomass CQDs via a green carbonization method. The colloidal stability, surface charge, and particle size were characterized using zeta potential and dynamic light scattering (DLS). DLS revealed that the size of the CQDs was approximately 5.80 ± 0.4 nm to 9.74 ± 0.8 nm. The high-resolution transmission electron microscopy (HRTEM) results demonstrated a correlation with the DLS results. The optical properties were characterized by photoluminescence (PL) and UV-Visible (UV-Vis) spectroscopy. PL measurements at different excitation wavelengths revealed that the CQDs emissions were influenced by the polarity of the solvents. Meanwhile, the Fourier transform infra-red (FTIR) results showed the presence of oxygen-containing groups on the surface of the CQDs. These results deepen our understanding of the solvent-dependent behavior and colloidal stability of the CQDs |
| first_indexed | 2024-12-09T02:20:32Z |
| format | Article |
| id | upm.eprints-108652 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-12-09T02:20:32Z |
| publishDate | 2023 |
| publisher | Springer New York |
| record_format | dspace |
| spelling | upm.eprints-1086522024-10-03T04:32:33Z http://psasir.upm.edu.my/id/eprint/108652/ Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels Zaini, Muhammad Safwan Liew, Josephine Ying Chyi Paiman, Suriati Tee, Tan Sin Kamarudin, Mazliana Ahmad Waste peels are considered an environmental burden and typically disposed in landfills. The aim of this study was to investigate the effects of various solvents on the luminescence properties of carbon quantum dots (CQDs). Watermelon peels were recycled and reuse as precursors for the synthesis of biomass CQDs via a green carbonization method. The colloidal stability, surface charge, and particle size were characterized using zeta potential and dynamic light scattering (DLS). DLS revealed that the size of the CQDs was approximately 5.80 ± 0.4 nm to 9.74 ± 0.8 nm. The high-resolution transmission electron microscopy (HRTEM) results demonstrated a correlation with the DLS results. The optical properties were characterized by photoluminescence (PL) and UV-Visible (UV-Vis) spectroscopy. PL measurements at different excitation wavelengths revealed that the CQDs emissions were influenced by the polarity of the solvents. Meanwhile, the Fourier transform infra-red (FTIR) results showed the presence of oxygen-containing groups on the surface of the CQDs. These results deepen our understanding of the solvent-dependent behavior and colloidal stability of the CQDs Springer New York 2023-12-01 Article PeerReviewed Zaini, Muhammad Safwan and Liew, Josephine Ying Chyi and Paiman, Suriati and Tee, Tan Sin and Kamarudin, Mazliana Ahmad (2023) Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels. Journal of Fluorescence. pp. 1-12. ISSN 1053-0509; eISSN: 1573-4994 https://link.springer.com/article/10.1007/s10895-023-03528-1 10.1007/s10895-023-03528-1 |
| spellingShingle | Zaini, Muhammad Safwan Liew, Josephine Ying Chyi Paiman, Suriati Tee, Tan Sin Kamarudin, Mazliana Ahmad Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title | Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title_full | Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title_fullStr | Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title_full_unstemmed | Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title_short | Solvent-dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
| title_sort | solvent dependent photoluminescence emission and colloidal stability of carbon quantum dots from watermelon peels |
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