Carbon Dots: Synthesis, Characterizations, and Recent Advancements in Biomedical, Optoelectronics, Sensing, and Catalysis Applications

ACS Applied Bio Materials, Год журнала: 2024, Номер 7(4), С. 2086 - 2127

Опубликована: Март 21, 2024

Carbon nanodots (CNDs), a fascinating carbon-based nanomaterial (typical size 2–10 nm) owing to their superior optical properties, high biocompatibility, and cell penetrability, have tremendous applications in different interdisciplinary fields. Here, this Review, we first explore the superiority of CNDs over other nanomaterials biomedical, optoelectronics, analytical sensing, photocatalysis domains. Beginning with synthesis, characterization, purification techniques, even address fundamental questions surrounding such as emission origin excitation-dependent behavior. Then recent advancements applications, focusing on biological/biomedical uses like specific organelle bioimaging, drug/gene delivery, biosensing, photothermal therapy. In cover CND-based solar cells, perovskite role LEDs WLEDs. Analytical sensing include detection metals, hazardous chemicals, proteins. catalysis, examine roles photocatalysis, CO2 reduction, water splitting, stereospecific pollutant degradation. With intend further spark interest composites by highlighting many benefits across wide range applications.

Язык: Английский

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Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review

Carbon Neutralization, Год журнала: 2024, Номер 3(2), С. 245 - 284

Опубликована: Март 1, 2024

Abstract Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, straightforward synthesis utilizing environmentally friendly precursors. In this review, we commence with a concise introduction, presenting both top‐down bottom‐up strategies for eco‐friendly CQDs. Subsequently, delve into comprehensive examination CQDs' structure characteristics, encompassing ultraviolet–visible absorption confinement effects, state emissions contributing room‐temperature photoluminescence (PL). This review proceeds elucidate recent advancements modification CQDs, specifically focusing on oxidation, passivation, incorporation heteroatoms. These serve afford control physicochemical facilitating enhancement PL through decoration highly visible‐responsive is achieved by suppressing nonradiative recombination electron‐hole pairs, enabling red/blue shifts CQDs generation full‐color emission spectrum, regulating band‐gap states broaden photoabsorption range. Finally, offer an overview most developments applications fluorescent emphasizing utility biomedicine, sensors, lighting, displays, well photocatalysis.

Язык: Английский

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The interface of machine learning and carbon quantum dots: From coordinated innovative synthesis to practical application in water control and electrochemistry

Coordination Chemistry Reviews, Год журнала: 2024, Номер 517, С. 215976 - 215976

Опубликована: Июнь 12, 2024

Язык: Английский

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Fluorescence ‘Turn-on’ Probe for Chromium Reduction, Adsorption and Detection Based on Cellulosic Nitrogen-Doped Carbon Quantum Dots Hydrogels

Gels, Год журнала: 2024, Номер 10(5), С. 296 - 296

Опубликована: Апрель 25, 2024

This paper proposes a new, highly effective fluorescence test for Cr(VI) detection. method utilizes hydrogel composed of hydroxyethyl cellulose (HEC), nitrogen-doped carbon quantum dots (N–CQDs), and poly(co-acrylamido-2-methyl-1-propane sulfonic acid) (AMPS). The N–CQDs were successfully synthesized using simple microwave method, then conjugated with HEC AMPS. higher adsorption (99.41%) reduction rate in H1 likely stems from both the presence (absent HB) their increased free functional groups (compared to H2/H3, where block them). facilitates release (desorption) hydrogels, making it more available less toxic Cr(III). fluorescent brightness HEC-N–CQDs-g-poly(AMPS) increases gradually when is added amounts ranging 15 120 mg/L. enhancement appeared exhibit good linear relationship 15–120 mg concentration, detection limit 0.0053 mg/L, which lower than standard value published by WHO. Our study found that served effectively as probe aqueous solutions, demonstrating high sensitivity.

Язык: Английский

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Exploring the Potential of Rare Earth Doped Carbon Dots: Concepts and Applications

Chemical Engineering Journal Advances, Год журнала: 2024, Номер 17, С. 100583 - 100583

Опубликована: Янв. 6, 2024

Carbon dots (CDs) are nanostructures containing mainly carbon atoms and abundant functional groups. With remarkable adjustable physicochemical properties, CDs have excellent hydrophilicity, photoluminescence (PL), biocompatibility, low toxicity. Although the numerous advantages make a research target for synthesizing advanced materials, some limitations pertinent must be corrected. Rare earth elements (RE) candidates doping CDs, obtaining hybrid materials called RE-CDs to optimize luminescence applicability, quantum yields. Hybrids allow combination of advantageous characteristics both RE, drastically improving their luminous magneto-optical imaging performance opening door practical technological applications. To date, no studies in literature provided in-depth analyses methods used prepare RE-CDs, characterization techniques used, challenges, critical analysis what could improved synthesis by proposing solutions. fill this gap, review initially presents detailed survey RE separately. Subsequently, addressed, as well obtainment, commonly characterizations, recent applications, from analyte detection functionality medical nanodevices. Finally, criticisms suggestions future work also discussed inspire new discoveries about potential derived RE-CDs.

Язык: Английский

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Fluffy-like amphiphilic graphene oxide and its effects on improving the antibacterial activity and thermal outstanding of ethyl cellulose /polyvinyl alcohol hydrogel film

BMC Chemistry, Год журнала: 2024, Номер 18(1)

Опубликована: Июнь 26, 2024

Abstract The antibacterial characteristics of graphene oxide (GO-SB) nano-sheets generated by charring sugarcane bagasse (SB) are described in this study. capability GO-SB was improved when it grafted with ethyl cellulose (EC) and polyvinyl alcohol (PVA) to form GO-SB/EC/PVA hydrogels. Characterization nanosheets hydrogels accomplished using FTIR, SEM, XRD, thermal studies. antimicrobial activity carried out against Gram positive bacteria [ Micrococcus leutus & Staphylococcus aureus ], negative Escherichia coli , Pseudomonas aeruginosa ] pathogenic fungal yeast Candida albicans applying the disc diffusion method. method results showed that exhibited a reasonable level demonstrating improvement more effective increasing inhibition zone Gram-positive bacteria, from (13.0 16.0 mm). Graphical abstract

Язык: Английский

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Application of electrospun N-doped carbon dots loaded cellulose acetate membranes as cationic dyes adsorbent

Journal of Environmental Management, Год журнала: 2024, Номер 370, С. 122714 - 122714

Опубликована: Окт. 8, 2024

Язык: Английский

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Fullerenes and tree-shaped/fingerprinted carbon quantum dots for chromium adsorption via microwave-assisted synthesis

RSC Advances, Год журнала: 2024, Номер 14(35), С. 25785 - 25792

Опубликована: Янв. 1, 2024

: Employing citric acid/dimethyl formamide (CA/DMF), two distinct types of carbon quantum dots (CQDs), tree-shaped/fingerprinted (TF-CQDs) and fullerene-like (F) were synthesized from both cellulose carboxymethyl (CMC).

Язык: Английский

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Synthesis of iron nanoparticles on lemon peel carbon dots (LP-CDs@Fe3O4) applied in Photo-Catalysis, Antioxidant, Antidiabetic, and hemolytic activity

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 113960 - 113960

Опубликована: Янв. 1, 2025

Язык: Английский

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Synthesis of multifunctional sulfur-nitrogen co-doped carbon quantum dots via facile one-pot microwave-assisted synthesis: applications on antioxidant, antimicrobial activities, and Fe3+ ion sensing

Journal of Nanoparticle Research, Год журнала: 2025, Номер 27(3)

Опубликована: Фев. 24, 2025

Язык: Английский

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