Synthesis of carbon-based quantum dots from starch extracts: Optical investigations
Carbon-based quantum dots (C-QDs) were synthesized through microwave-assisted carbonization of an aqueous starch suspension mediated by sulphuric and phosphoric acids. The as-prepared C-QDs showed blue, green and yellow luminescence without the addition of any surface-passivating agent. The C-QDs we...
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| Format: | Article |
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Wiley
2017
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| author | Al-Douri, Yarub Badi, Nacer Voon, Chun Hong |
| author_facet | Al-Douri, Yarub Badi, Nacer Voon, Chun Hong |
| author_sort | Al-Douri, Yarub |
| collection | UM |
| description | Carbon-based quantum dots (C-QDs) were synthesized through microwave-assisted carbonization of an aqueous starch suspension mediated by sulphuric and phosphoric acids. The as-prepared C-QDs showed blue, green and yellow luminescence without the addition of any surface-passivating agent. The C-QDs were further analyzed by UV−vis spectroscopy to measure the optical response of the organic compound. The energy gaps revealed narrow sizing of C-QDs in the semiconductor range. The optical refractive index and dielectric constant were investigated. The C-QDs size distribution was characterized. The results suggested an easy route to the large scale production of C-QDs materials. |
| first_indexed | 2024-03-06T05:57:23Z |
| format | Article |
| id | um.eprints-22577 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:57:23Z |
| publishDate | 2017 |
| publisher | Wiley |
| record_format | dspace |
| spelling | um.eprints-225772019-09-26T04:39:02Z http://eprints.um.edu.my/22577/ Synthesis of carbon-based quantum dots from starch extracts: Optical investigations Al-Douri, Yarub Badi, Nacer Voon, Chun Hong QC Physics TK Electrical engineering. Electronics Nuclear engineering Carbon-based quantum dots (C-QDs) were synthesized through microwave-assisted carbonization of an aqueous starch suspension mediated by sulphuric and phosphoric acids. The as-prepared C-QDs showed blue, green and yellow luminescence without the addition of any surface-passivating agent. The C-QDs were further analyzed by UV−vis spectroscopy to measure the optical response of the organic compound. The energy gaps revealed narrow sizing of C-QDs in the semiconductor range. The optical refractive index and dielectric constant were investigated. The C-QDs size distribution was characterized. The results suggested an easy route to the large scale production of C-QDs materials. Wiley 2017 Article PeerReviewed Al-Douri, Yarub and Badi, Nacer and Voon, Chun Hong (2017) Synthesis of carbon-based quantum dots from starch extracts: Optical investigations. Luminescence, 33 (2). pp. 260-266. ISSN 1522-7235, DOI https://doi.org/10.1002/bio.3408 <https://doi.org/10.1002/bio.3408>. https://doi.org/10.1002/bio.3408 doi:10.1002/bio.3408 |
| spellingShingle | QC Physics TK Electrical engineering. Electronics Nuclear engineering Al-Douri, Yarub Badi, Nacer Voon, Chun Hong Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title | Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title_full | Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title_fullStr | Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title_full_unstemmed | Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title_short | Synthesis of carbon-based quantum dots from starch extracts: Optical investigations |
| title_sort | synthesis of carbon based quantum dots from starch extracts optical investigations |
| topic | QC Physics TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT aldouriyarub synthesisofcarbonbasedquantumdotsfromstarchextractsopticalinvestigations AT badinacer synthesisofcarbonbasedquantumdotsfromstarchextractsopticalinvestigations AT voonchunhong synthesisofcarbonbasedquantumdotsfromstarchextractsopticalinvestigations |