Sustainable Valorization of Rice Straw into Biochar and Carbon Dots Using a Novel One-Pot Approach for Dual Applications in Detection and Removal of Lead Ions

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(1), P. 66 - 66

Published: Jan. 3, 2025

Lead (Pb) is a highly toxic heavy metal that causes significant health hazards and environmental damage. Thus, the detection removal of Pb2+ ions in freshwater sources are imperative for safeguarding public environment. Moreover, transformation single resources into multiple high-value products vital achieving sustainable development goals (SDGs). In this regard, present work focused on preparation two efficient materials, i.e., biochar (R-BC) carbon dots (R-CDs) from resource (rice straw), via novel approach by using extraction hydrothermal process. The various microscopic spectroscopy techniques confirmed formation porous structure spherical morphology R-BC R-CDs, respectively. FTIR analysis presence hydroxyl (–OH), carboxyl (–COO) amine (N–H) groups R-CDs’ surface. obtained blue luminescent R-CDs were employed as chemosensors ions. sensor exhibited strong linear correlation over concentration range 1 µM to 100 µM, with limit (LOD) 0.11 µM. Furthermore, BET indicated surface area 1.71 m2/g monolayer volume 0.0081 cm3/g, supporting its adsorption potential Pb2+. showed excellent efficiency 77.61%. process followed Langmuir isotherm model second-order kinetics. Therefore, dual use rice straw-derived provides cost-effective, environmentally friendly solution remediation accomplish SDGs.

Language: Английский

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Fluorometric detection of copper and imidacloprid using nitrogen‐doped graphitic carbon dots: A promising method for environmental monitoring

Luminescence, Journal Year: 2024, Volume and Issue: 39(8)

Published: Aug. 1, 2024

Abstract Pesticides in environmental samples pose significant risks to ecosystems and human health since they require precise efficient detection methods. Imidacloprid (IMI), a widely used neonicotinoid insecticide, exemplifies these hazards due its potential toxicity. This study addresses the urgent need for improved monitoring of such contaminants by introducing novel fluorometric method detecting IMI using nitrogen‐doped graphite carbon dots (N‐GCDs). The sensor operates quenching fluorescence through interaction Cu 2+ ions with N‐GCDs. Subsequently, binds imidazole group, chelates , restores alternating behavior allows accurate identification both IMI. exhibits linear ranges 20–100 nM 10–140 μg/L IMI, limits 18 1.2 μg/L, respectively. high sensitivity this enables real‐world samples, which underscores practical use agricultural safety.

Language: Английский

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Antioxidant Activity and Immunocompatibility of Maillard Reaction Carbon Quantum Dots Derived from Arginine-Glucose Model System

Food Bioscience, Journal Year: 2025, Volume and Issue: unknown, P. 105916 - 105916

Published: Jan. 1, 2025

Language: Английский

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One step synthesis of tryptophan-isatin carbon nano dots and bio-applications as multifunctional nanoplatforms

Colloids and Surfaces B Biointerfaces, Journal Year: 2025, Volume and Issue: 249, P. 114533 - 114533

Published: Jan. 21, 2025

Language: Английский

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Bio-inspired nitrogen-doped carbon quantum dots: A green route for bioimaging and nano-biosensing

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 227, P. 120817 - 120817

Published: March 14, 2025

Language: Английский

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Engineering of Green Carbon Dots for Biomedical and Biotechnological Applications

Molecules, Journal Year: 2024, Volume and Issue: 29(18), P. 4508 - 4508

Published: Sept. 23, 2024

Carbon dots (CDs) are attracting increasing research attention due to their exceptional attributes, including biocompatibility, water solubility, minimal toxicity, high photoluminescence, and easy functionalization. Green CDs, derived from natural sources such as fruits vegetables, present advantages over conventionally produced cost-effectiveness, stability, simplicity, safety, environmental friendliness. Various methods, hydrothermal microwave treatments, used synthesize green which demonstrate strong luminescence. These properties give CDs versatility in biological applications, bioimaging, biosensing, drug delivery. This review summarizes the prevalent synthesis methods renewable regarding CDs; examines optical features; explores extensive drug/gene delivery, antimicrobial antiviral effects, formatting of mathematical components, cancer diagnosis, pharmaceutical formulations.

Language: Английский

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Functionalized Carbon Dots With Intrinsic Wnt/β-Catenin Inhibition to Synergistically Promote 5-Fluorouracil Chemotherapy

International Journal of Nanomedicine, Journal Year: 2025, Volume and Issue: Volume 20, P. 1951 - 1964

Published: Feb. 1, 2025

5-fluorouracil (5-FU) is the most widely used anti-pyrimidine drug that exerts its cytotoxic effect by causing DNA damage. The Wnt/β-catenin pathway has been considered a promising strategy to improve chemosensitivity enhancing damage response of chemotherapy drugs. Combination therapies against cancers could inevitably affect endogenous levels ribonucleotides (RNs) and deoxyribonucleotides (dRNs) which are critical for synthesis repair. However, exploring satisfactory inhibitors synergistic therapy through regulating RNs dRNs remains challenging. Here, aloe vera-derived carbon dots (A-CDs) with good bioactivity were synthesized via one-step hydrothermal process, demonstrating both intrinsic inhibition bioimaging capabilities overcome limitations conventional inhibitors. as-prepared A-CDs further served as transport vehicle 5-FU, facilitating combination inhibiting pathway, possibly accelerate nucleotide imbalance dATP, ATP, TMP, dUMP, ultimately leading enhanced 5-FU efficiency. Additionally, tumor-targeted material (HA-CDs@5-FU) was modifying hyaluronic acid (HA) onto CDs@5-FU exhibited superior antitumor efficacy in vivo negligible side effects. Overall, this study provided novel therapy, providing insights into application nano-agents cancer therapy.

Language: Английский

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Nature’s blueprint for energy: biomass-derived heteroatom-doped graphene materials for advanced energy applications

Carbon letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Language: Английский

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Preparation of MoS2 modified with carbon quantum dots and its application to extremely high oxygen-barrier nanocomposite films for packaging

Food Packaging and Shelf Life, Journal Year: 2025, Volume and Issue: 49, P. 101504 - 101504

Published: April 24, 2025

Language: Английский

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The Use of Carbon Dots for Food Packaging and Preservation: Toxic or Beneficial?

Comprehensive Reviews in Food Science and Food Safety, Journal Year: 2025, Volume and Issue: 24(3)

Published: April 24, 2025

ABSTRACT Carbon dots (CDs), which are emerging as versatile nanomaterials, have gained interest in food packaging and preservation due to their sustainable origin multifunctional characteristics, such antimicrobial, antioxidant, UV‐protective properties. CDs can be synthesized from biomass been proposed functional additives material improve the safety shelf life of packaged food. Despite these benefits, concerns raised about potential toxicity when leached into foods, especially since they belong nanomaterial category. Interestingly, foodborne CDs, naturally formed heat‐processed foods consumed by humans for centuries, add a new complexity debate. Although there is no definitive evidence linking endogenous adverse health effects, some studies suggest interfere with metabolism animal models. In addition, presence hazardous substances thermally processed polycyclic aromatic hydrocarbons (PAHs), may further complicate assessment. This review addresses paradox CD sources, highlighting its dual role both potentially toxic agent beneficial material. More extensive research essential fully understand long‐term effects on human determine whether use truly safe or beneficial.

Language: Английский

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