Carbon Dots: A Review with Focus on Sustainability

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract Carbon dots (CDs) are an emerging class of nanomaterials with attractive optical properties, which promise to enable a variety applications. An important and timely question is whether CDs can become functional sustainable alternative incumbent nanomaterials, notably inorganic quantum dots. Herein, the current CD literature comprehensively reviewed as regards their synthesis function, focus on sustainability aspects. The study quantifies why it that be synthesized biomass sole starting material free from toxic precious metals critical raw materials. It further describes analyzes employed pretreatment, chemical‐conversion, purification, processing procedures, highlights issues usage solvents, energy efficiency, safety waste management. specially shown many reported methods concerningly wasteful utilization non‐sustainable solvents energy. finally recommended future studies should explicitly consider discuss environmental influence selected material, generated byproducts, quantitative information required amounts consumables, provided evaluation presented in upscaled context.

Language: Английский

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Comprehensive Overview of Controlled Fabrication of Multifunctional Fluorescent Carbon Quantum Dots and Exploring Applications

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 11, 2024

Abstract In recent years, carbon dots (CDs) have garnered increasing attention due to their simple preparation methods, versatile performances, and wide‐ranging applications. CDs can manifest various optical, physical, chemical properties including quantum yield (QY), emission wavelength (Em), solid‐state fluorescence (SSF), room‐temperature phosphorescence (RTP), material‐specific responsivity, pH sensitivity, anti‐oxidation oxidation, biocompatibility. These be effectively regulated through precise control of the CD process, rendering them suitable for diverse However, lack consideration given each feature during process poses a challenge in obtaining requisite features This paper is analyze existing research present novel concepts ideas creating with different distinct The synthesis methods are discussed first section, followed by comprehensive overview important modification strategy. Subsequently, application reviewed. Finally, outlines current challenges controlling applications, discusses potential solutions, offers suggestions future research.

Language: Английский

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Carbon dots as new antioxidants: Synthesis, activity, mechanism and application in the food industry

Food Chemistry, Journal Year: 2025, Volume and Issue: 475, P. 143377 - 143377

Published: Feb. 12, 2025

Language: Английский

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Green Synthesis of N,S-Doped Carbon Dots from the Giloy Stem for Fluorimetry Detection of 4-Nitrophenol, Triple-Mode Detection of Congo Red, and Antioxidant Applications

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 5874 - 5885

Published: Feb. 5, 2025

Synthesis of doped carbon dots (CDs) with enhanced fluorescence properties from green precursors has gained considerable attention due to their multipotential applications such as chemical well biosensing, photocatalysis, electrocatalysis, drug delivery, and bioimaging applications. Here, we have prepared highly fluorescent N,S-doped CDs (N,S-CDs) using a single natural precursor, the Giloy stem, by hydrothermal method explore These N,S-CDs were demonstrated probes for selective detection toxic organic pollutants that include 4-nitrophenol (4-NP) congo red (CR) limits (LODs) 380 62 nM, respectively. The quenching observed in was result inner filter effect (IFE). methods developed used detect 4-NP CR real samples, tap water pond water, recovery ranges 93.88 103.45% 95.05 99.04%, Furthermore, these employed colorimetric smartphone-assisted CR. advantages smartphone analytes naked-eye visualization probe-analyte interactions, use portable easy-to-handle device, elimination need an expensive spectrophotometer. In addition sensing application, showed radical scavenging activity.

Language: Английский

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Coffee grounds-derived carbon quantum dots as peroxidase mimetics for colorimetric and fluorometric detection of ascorbic acid

Food Chemistry, Journal Year: 2023, Volume and Issue: 429, P. 136957 - 136957

Published: July 23, 2023

Language: Английский

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Green synthesis, characterization and biomedical applications of Centella asiatica-derived carbon dots

Carbon letters, Journal Year: 2023, Volume and Issue: 33(4), P. 1057 - 1071

Published: April 6, 2023

Language: Английский

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Green hydrothermal synthesis of multifunctional carbon dots from cassava pulps for metal sensing, antioxidant, and mercury detoxification in plants

Carbon Resources Conversion, Journal Year: 2023, Volume and Issue: 7(2), P. 100206 - 100206

Published: Dec. 12, 2023

Carbon dots (CDs) have been attracted to nanocarbon materials for metal ion sensing, biological activity, and plant phytotoxicity due their excellent photophysical properties, such as low cytotoxicity, high quantum yield, tunable fluorescence emission, biocompatibility. Cassava pulp, which consists mainly of starch, has identified a low-cost biomass waste from the cassava starch industry. Therefore, this research developed CDs nitrogen-doped (NCDs) pulp using one-step hydrothermal process in deionized water at 200°C. The effects synthesis conditions, including reaction time (6-24 hours) nitrogen doping derivatives, were also investigated. ethylenediamine doped-NCDs exhibited strong photostability, tolerance photobleaching. Furthermore, potential applications CDs-12h demonstrated fluorescent sensor antioxidant mercury detoxification plants. Fluorescence quenching via both static dynamic mechanisms was observed presence several ions Hg2+, Cu2+, Fe3+ with detection limit micromolar levels further applied real samples good recovery acceptable relative standard derivation. paper test strip coated could detect these under UV light. NCDs-EDA showed DPPH radical scavenging activity alleviated toxicity Chinese cabbage seedlings incubation NCDs-EDA-12h (30 mg/L).

Language: Английский

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Green transformation of biomass-derived Indian gooseberry into fluorescent intrinsic nitrogen-functionalized carbon quantum dots for real-time detection of vitamin B₂ in the nanomolar range

RSC Sustainability, Journal Year: 2024, Volume and Issue: 2(5), P. 1472 - 1486

Published: Jan. 1, 2024

Selective and specific detection of vitamin B 2 with a fluorescent nanoprobe synthesized using green methodology.

Language: Английский

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Protective effect of carbon dots as antioxidants on intestinal inflammation by regulating oxidative stress and gut microbiota in nematodes and mouse models

International Immunopharmacology, Journal Year: 2024, Volume and Issue: 131, P. 111871 - 111871

Published: March 16, 2024

Language: Английский

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Recent advancements and prospects in carbon-based nanomaterials derived from biomass for environmental remediation applications

Chemosphere, Journal Year: 2024, Volume and Issue: 357, P. 141935 - 141935

Published: April 17, 2024

Language: Английский

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