Plastic Waste-Derived Carbon Dots: Insights of Recycling Valuable Materials Towards Environmental Sustainability
Open accessAbstract
Carbon dots (CDs) or carbon quantum dots (CQDs) have emerged as rising stars in the carbon family due to their diverse applications in various fields. CDs are spherical particles with a well-distributed size of less than 10 nm. Functional CDs are promising nanomaterials with low toxicity, low cost, and enormous applications in the field of bioimaging, optoelectronics, photocatalysis, and sensing. Plastic is non-biodegradable and hazardous to the environment, however extremely durable and used in abundance. During the COVID-19 pandemic, the use of plastic waste, particularly masks, goggles, face shields, and shoe cover, has increased tremendously. It needs to be recycled in a productive way as plastic wastes take hundreds or thousands of years to degrade naturally. The conversion of plastic waste into magnificent CDs has been reported as one of the key alternatives for environmental sustainability and socio-economic benefits. In this review, synthetic routes for the conversion of plastic wastes into CDs utilizing hydrothermal, solvothermal, pyrolysis, flash joule heating, and characterization of these CDs using different techniques, such as Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and transmission electron microscope, have been discussed. Furthermore, potential applications of these plastic-derived CDs in sensing, catalysis, agronomics, and LED lights are summarized herein.
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Hydrothermal carbonization, carbonization or oxidation are usually used to produce carbon nanodots from polymers.
“Hydrothermal carbonization, carbonization or oxidation are usually used to produce carbon nanodots from polymers (Arpita et al. 2023).”
From Conversion of waste plastics into value-added carbon materials (2023) · cites this paper as Arpita et al. 2023
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Luo, Y., Lin, X., Lichtfouse, E., Jiang, H., & Wang, C. (2023) · Environmental Chemistry Letters · doi:10.1007/s10311-023-01638-7 · Cited by 100 · see citing works
- Authors
- Arpita, Kumar, P., Kataria, N., Narwal, N., Kumar, S., Kumar, R., Khoo, K. S., & Show, P. L.
- Affiliations
- J.C. Bose University of Science & Technology, YMCA (IN)
- Guru Gobind Singh Indraprastha University (IN)
- Saveetha University (IN)
- Khalifa University of Science and Technology (AE)
- Corresponding author
- Kumar, Sandeep
- Kumar, Ravi
- Khoo, Kuan Shiong
- Show, Pau Loke
- Venue
- Current Pollution Reports
- Published
- 2023-05-26
- Volume
- 9
- Issue
- 3
- Pages
- 433-453
- ISSN
- 2198-6592 (ISSN-L)
- PMC
- PMC10214366
- OpenAlex
- W4378391047
- Cited by
- 71
- References
- 110
- Citations by year
- 2026: 11 · 2025: 33 · 2024: 19 · 2023: 8
- FWCI
- 1.10
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Current Pollution Reports (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- University Grants Commission New Delhi, India - Junior Research Fellowship (114/(CSIR-UGC NET JUNE 2017)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Carbon and Quantum Dots Applications
- Physical Sciences › Materials Science › Materials Chemistry › Diamond and Carbon-based Materials Research
- Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
- Keywords
- carbon dots, plastic recycling, COVID-19 medical waste, hydrothermal synthesis, solvothermal synthesis, pyrolysis, flash Joule heating, sensing, photocatalysis, LED lighting, environmental sustainability
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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