Luminescent carbon dots encapsulating in Eu3+ doped gahnite spinel nanocomposite for boosting thermal sensing, advanced level III detection and intelligent anti-counterfeiting applications

Materials Today Sustainability, Год журнала: 2024, Номер 27, С. 100872 - 100872

Опубликована: Июнь 4, 2024

Язык: Английский

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Large Scale Synthesis of Carbon Dots and Their Applications: A Review

Molecules, Год журнала: 2025, Номер 30(4), С. 774 - 774

Опубликована: Фев. 7, 2025

Carbon dots (CDs), a versatile class of fluorescent carbon-based nanomaterials, have attracted widespread attention due to their exceptional optical properties, biocompatibility, and cost-effectiveness. Their applications span biomedicine, optoelectronics, smart food packaging, yet large-scale synthesis remains significant challenge. This review categorizes methods into liquid-phase (hydrothermal/solvothermal, microwave-assisted, magnetic hyperthermia, aldol condensation polymerization), gas-phase (plasma synthesis), solid-phase (pyrolysis, oxidation/carbonization, ball milling), emerging techniques (microfluidic, ultrasonic, molten-salt). Notably, microwave-assisted solid-state show promise for industrial production scalability efficiency. Despite these advances, challenges persist in optimizing reproducibility, reducing energy consumption, developing purification quality control strategies. Addressing issues will be critical transitioning CDs from laboratory research real-world applications.

Язык: Английский

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Carbon Dot Synthesis and Purification: Trends, Challenges and Recommendations

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(48)

Опубликована: Авг. 20, 2024

Abstract Carbon dots (CDs) have rapidly emerged as a new family of carbon‐based nanomaterials since their initial discovery two decades ago. Numerous appealing properties, such precursor and synthesis process flexibility, tunable photoluminescence, good biocompatibility, enabled widespread applications in sensing, catalysis, energy, biomedical fields. As the field expands, notable efforts recently focused on mechanistically elucidating structural formation optical behavior CDs. However, absence “clean” CDs presents major obstacle to achieving solid understanding these aspects. Often, claimed are, fact, mixture small molecules, oligomers, nano‐sized aggregates, or even microparticles. Such coexistence impurities markedly impacts physicochemical properties resulting CD‐based mixtures, hampering resolution key mechanistic questions. Here, we aim address this fundamental shortcoming field, going beyond customary focus existing reviews that predominantly cover synthesis, performance, application prospects. We begin with an overview CD then thoroughly examine purification methods, including filtration, dialysis, electrophoresis, chromatography. The insights provided here will guide researchers towards obtaining high‐quality CDs, employing proper combinations available tools, ultimately paving way for more demanding applications.

Язык: Английский

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Carbon Dots for Future Prospects: Synthesis, Characterizations and Recent Applications: A Review (2019–2023)

C – Journal of Carbon Research, Год журнала: 2024, Номер 10(3), С. 60 - 60

Опубликована: Июль 5, 2024

Carbon dots (CDs) have emerged as a promising class of carbon-based nanomaterials due to their unique properties and versatile applications. (CDs), also known carbon quantum (CQDs) or graphene (GQDs), are nanoscale materials with dimensions typically less than 10 nanometers. They exhibit intriguing optical, electronic, chemical properties, making them attractive for wide range applications, including sensing, imaging, catalysis, energy conversion, among many others. Both bottom-up top-down synthesis approaches utilized the dots, each method impacting physicochemical characteristics. can diverse structures, amorphous, crystalline, hybrid depending on precursor used. CDs structures modified oxygen, polymer-based, amino groups surface. These influence optical electronic such photoluminescence, bandgap, charge carrier mobility, tunable specific Various characterization methods HRTEM, XPS, analysis (PL, UV) used determine structure CDs. cutting-edge fluorescent remarkable qualities biocompatibility, low toxicity, environmental friendliness, high water solubility, photostability. easily adjustable in terms highly various fields. find applications bio-imaging, nanomedicine, drug delivery, solar cells, photocatalysis, electrocatalysis, other related areas. hold great promise field cell technology yield (CQY), excellent separation.

Язык: Английский

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Synergistic Integration of Carbon Quantum Dots in Biopolymer Matrices: An Overview of Current Advancements in Antioxidant and Antimicrobial Active Packaging

Molecules, Год журнала: 2024, Номер 29(21), С. 5138 - 5138

Опубликована: Окт. 30, 2024

Approximately one-third of the world's food production, i.e., 1.43 billion tons, is wasted annually, resulting in economic losses nearly USD 940 and undermining system sustainability. This waste depletes resources, contributes to greenhouse gas emissions, negatively affects security prices. Although traditional packaging preserves quality, it cannot satisfy demands extended shelf life, safety, Consequently, active using biopolymer matrices containing antioxidants antimicrobials a promising solution. review examines current advancements integration carbon quantum dots (CQDs) into biopolymer-based packaging, focusing on their antioxidant antimicrobial properties. CQDs provide unique advantages over nanoparticles natural compounds, including high biocompatibility, tunable surface functionality, environmental explores mechanisms through which impart activities, synthesis methods, functionalization optimize efficacy matrices. Recent studies have highlighted that CQD-enhanced biopolymers maintain biodegradability with enhanced functions. Additionally, potential challenges, such as toxicity, regulatory considerations, scalability are discussed, offering insights future research directions industrial applications. demonstrates CQD-incorporated transform aligning sustainability goals advancing preservation technologies.

Язык: Английский

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Green-Synthesised Carbon Nanodots: A SWOT Analysis for their Safe and Sustainable Innovation

Journal of Cleaner Production, Год журнала: 2024, Номер 480, С. 144115 - 144115

Опубликована: Окт. 30, 2024

Язык: Английский

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Fe-Doped Red Fluorescent Carbon Dots for Caffeine Analysis in Energy Drinks Using a Paper-Based Sensor

Journal of Fluorescence, Год журнала: 2024, Номер unknown

Опубликована: Дек. 12, 2024

Язык: Английский

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Carbon Dots for Future Prospects: Synthesis, Characterizations and Recent Applications: A Review (2019–2023)

Опубликована: Апрель 3, 2024

Nanotechnology sparks discussions and concerns about the impacts of new nanomaterials on health environment. It holds importance in various domains due to its unique struc-tures. Carbon dots (C-dots) are versatile with applications bioimaging, sensing, catalysis, polymers, solar cells, more. They offer desirable characteristics such as stability, cost-effectiveness, biocompatibility, high photoluminescent quantum yield. C-dots have potential replace expensive fluorophores cells. catego-rized carbon dots, graphene carbonized polymer dots. outstanding optical photoelectric properties low toxicity. Bottom-up top-down approaches used for synthesis (CDs), each method im-pacting their physicochemical characteristics. The choice depends de-sired application requirements. Researchers combine these methods ex-plore enhance efficiency tailor CD properties. CDs di-verse chemical structures modified oxygen, polymer-based, or amino groups surface. Various characterization HRTEM, XPS, analysis (PL, UV) determine structure. (CDs) cutting-edge fluorescent nano-materials remarkable qualities toxicity, environmental friendliness, water solubility, photo-stability. easily adjustable terms properties, making them highly fields. find bio-imaging, nanomedicine, drug delivery, LEDs, photo-catalysis, elec-tro-catalysis, other related areas.

Язык: Английский

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Carbon Dots in Catalysis: Synthesis, Properties, Applications, Comparative Advantages, and Future Directions

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115556 - 115556

Опубликована: Янв. 1, 2025

Язык: Английский

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Effect of precursors on carbon dot functionalization and applications: a review

The Analyst, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Carbon dots (CDs) are a type of carbon-based nanoparticle (NP) that have risen in popularity due to their unique tuneable physicochemical and optical properties.

Язык: Английский

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