The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.
Electrochemical Method To Prepare Graphene Quantum Dots and Graphene Oxide Quantum Dots
Open accessAbstract
Abstract In this study, we present the preparation of graphene quantum dots (GQDs) and graphene oxide quantum dots (GOQDs). GQDs/GOQDs are prepared by an easy electrochemical exfoliation method, in which two graphite rods are used as electrodes. The electrolyte used is a combination of citric acid and alkali hydroxide in water. Four types of quantum dots, GQD1–GQD4, are prepared by varying alkali hydroxide concentration in the electrolyte, while keeping the citric acid concentration fixed. Variation of alkali hydroxide concentration in the electrolyte results in the production of GOQDs. Balanced reaction of citric acid and alkali hydroxide results in the production of GQDs (GQD3). However, three variations in alkali hydroxide concentration result in GOQDs (GQD1, GQD2, and GQD4). GOQDs show tunable oxygen functional groups, which are confirmed by X-ray photoelectron spectroscopy. GQDs/GOQDs show absorption in the UV region and show excitation-dependent photoluminescence behavior. The obtained average size is 2–3 nm, as revealed by transmission electron microscopy. X-ray diffraction peak at around 10° and broad D band peak at 1350 cm–1 in Raman spectra confirm the presence of oxygen-rich functional groups on the surface of GOQDs. These GQDs and GOQDs show blue to green luminescence under 365 nm UV irradiation.
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Cites
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Properties, synthesis, and applications of carbon dots: A review
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A review of carbon quantum dots and their applications in wastewater treatment
Rani, U. A., Ng, L. Y., Ng, C. Y., & Mahmoudi, E. (2020) · Advances in Colloid and Interface Science · doi:10.1016/j.cis.2020.102124 · Cited by 417
Carbon-based quantum particles: an electroanalytical and biomedical perspective
Nekoueian, K., Amiri, M., Sillanpää, M., Marken, F., Boukherroub, R., & Szunerits, S. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00445e · Cited by 294
Metadata
- Authors
- Ahirwar, S., Mallick, S., & Bahadur, D.
- Venue
- ACS Omega
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-11-28
- Volume
- 2
- Issue
- 11
- Pages
- 8343-8353
- ISSN
- 2470-1343 (ISSN-L)
- OpenAlex
- W2768218611
- Cited by
- 375
- References
- 41
- FWCI
- 6.21
- Type
- journal article
- Language
- en
- Open access
- gold
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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