Carbon Dots Based Photoinduced Reactions: Advances and Perspective

Advanced Science, Год журнала: 2023, Номер 10(12)

Опубликована: Фев. 3, 2023

Seeking clean energy as an alternative to traditional fossil fuels is the inevitable choice realize sustainable development of society. Photocatalytic technique considered a promising conversion approach store abundant solar into other wieldy carriers like chemical energy. Carbon dots, class fascinating carbon nanomaterials, have already become hotspots in numerous photoelectric researching fields and particularly drawn keen interests metal-free photocatalysts owing strong UV-vis optical absorption, tunable energy-level configuration, superior charge transfer ability, excellent physicochemical stability, facile fabrication, low toxicity, high solubility. In this review, classification, microstructures, general synthetic methods, photoelectrical properties dots are systematically summarized. addition, recent advances based photoinduced reactions including photodegradation, photocatalytic hydrogen generation, CO

Язык: Английский

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Self‐Floating Photocatalytic System for Highly Efficient Hydrogen Peroxide Production and Organic Synthesis on Carbon Dots Decorated Conjugated Microporous Polymer

Advanced Functional Materials, Год журнала: 2024, Номер 34(28)

Опубликована: Фев. 15, 2024

Abstract Photocatalytic oxygen (O 2 ) reduction to hydrogen peroxide (H O is considered be a promising method for energy storage. However, it suffers from the rapid recombination of carriers, limited solubility and slow diffusion , self‐decomposition H in traditional diphase systems. Here, self‐floating carbon dots/conjugated microporous polymer (CDs/CMP) photocatalytic system established production organic synthesis. Due D–π–A structure, porous hydrophobicity, CMP induced intramolecular charge transfer, exposed abundant reaction sites, enhanced adsorption. CDs act as “bridges” electron transmission regulate surface hydrophobicity CMP, further improving transfer optimizing interface. CDs/CMP exhibits high 8542.6 µmol g −1 h concurrent furoic acid at 2.22 m . This rate ≈90% higher than that system, exceeding all previously reported photocatalysts triphase Notably, achieves relative separation suppressing generated self‐decomposition. Theoretical calculations situ characterizations reveal mechanism evolution. provides insights into exploring application metal‐free heterogeneous reactions.

Язык: Английский

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Recent Advances on Carbon‐Based Metal‐Free Electrocatalysts for Energy and Chemical Conversions

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 25, 2024

Over the last decade, carbon-based metal-free electrocatalysts (C-MFECs) have become important in electrocatalysis. This field is started thanks to initial discovery that nitrogen atom doped carbon can function as a electrode alkaline fuel cells. A wide variety of nanomaterials, including 0D dots, 1D nanotubes, 2D graphene, and 3D porous carbons, has demonstrated high electrocatalytic performance across applications. These include clean energy generation storage, green chemistry, environmental remediation. The applicability C-MFECs facilitated by effective synthetic approaches, e.g., heteroatom doping, physical/chemical modification. methods enable creation catalysts with properties useful for sustainable transformation storage (e.g., cells, Zn-air batteries, Li-O

Язык: Английский

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Visible‐Light Manipulated Reversible and Ultralong Phosphorescence of Carbon Dots Through Dynamic Cross‐Linking

Advanced Functional Materials, Год журнала: 2024, Номер 34(45)

Опубликована: Май 29, 2024

Abstract Dynamic organic room‐temperature phosphorescence (RTP) materials are highly promising for various applications. However, developing photo‐responsive RTP systems with simple fabrication, high reversibility, and visible‐light responsiveness presents a significant challenge. Herein, in situ embedding of boron‐doped carbon dots (B‐CDs) amorphous polymer (pPBA) is achieved by two‐step polymerization carbonization process. Impressively, the B‐CDs@pPBA composite exhibits visible‐light‐activated ultralong full reversibility lifetime on–off ratio exceeding 280. By correlating photophysical properties structural characterization results, it concluded that photoinduced intensifying crosslinking between B‐CDs pPBA responsible dynamic RTP. More interestingly, film found to display bending actuation reversible deformable behavior upon light exposure. Finally, potential applications such programmable information storage encryption demonstrated. This research may pave new way development nanomaterials promote their use wide range

Язык: Английский

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Microwave synthesis of chitosan-based carbon dots for Al3+ detection and biological application

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 260, С. 129413 - 129413

Опубликована: Янв. 22, 2024

Язык: Английский

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Meticulously designed red emission carbon dots as efficient and stable luminescent species for rapid latent fingerprint recognition and light emitting diodes

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 152121 - 152121

Опубликована: Май 10, 2024

Язык: Английский

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Single‐Atom Iridium‐doped Carbon Dots Nanozyme with High Peroxidase‐Like Activity as Colorimetric Sensors for Multimodal Detection of Mercury Ions

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Nanozyme-based colorimetric sensors are promising approaches for environmental monitoring, food safety, and medical diagnostics. However, developing novel nanozymes that exhibit high catalytic activity, good dispersion in aqueous solution, sensitivity, selectivity, stability is challenging. In this study, the first time, single-atom iridium-doped carbon dot (SA Ir-CDs) synthesized via a simple situ pyrolysis process. Doping dots with iridium form of single atoms to achieve maximum atomic utilization not only enhances peroxidase (POD)-like activity 178.81 U mg-1 but also improves dispersibility solutions over 30 days. Hence, SA Ir-CD platform developed mercury ions (Hg2+) detection exhibited linear relationship from 0.01 10 µm limit 4.4 nm. Notably, changes color can be observed through naked eye smartphone, enabling convenient field onsite monitoring without need sophisticated analytical equipment. an approach fabricating metal-based POD-like developed, new effective easy-to-use sensor Hg2+ constructed.

Язык: Английский

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Antimicrobial properties of carbon “quantum” dots for food safety applications

Journal of Nanoparticle Research, Год журнала: 2025, Номер 27(2)

Опубликована: Янв. 31, 2025

Abstract Carbon dots represent a rapidly advancing and expanding research field, with large number of literature reports on their potential technological applications including those relevant to food safety. In this article, the dot samples prepared by deliberate chemical functionalization preexisting small carbon nanoparticles or thermal carbonization various organic precursors under different processing conditions are highlighted critiqued for similarities differences in sample structure-morphology properties, especially antimicrobial properties safety–related uses. Also discussed representative recent examples use inactivate foodborne pathogens, disrupt biofilms prevent formation, extend shelf life products, which involve antibacterial mechanisms. Some perspectives further development dots–based/derived platform related excellent application opportunities safety provided.

Язык: Английский

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Herbal Medicine-Inspired Carbon Quantum Dots with Antibiosis and Hemostasis Effects for Promoting Wound Healing

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(7), С. 8527 - 8537

Опубликована: Фев. 8, 2024

Bleeding and bacterial infections are crucial factors affecting wound healing. The usage of herbal medicine-derived materials holds great potential for promoting However, the uncertain intrinsic effective ingredients unclear mechanism action remain concerns. Herein, inspired by medicine Ligusticum wallichii, we reported synthesis tetramethylpyrazine-derived carbon quantum dots (TMP-CQDs) Of note, use TMP as precursor instead L. wallichii ensured repeatability homogeneity obtained products. Furthermore, TMP-CQDs exhibited high antibacterial activity. Mechanically, inhibited DNA repair, biosynthesis, quorum sensing bacteria induced intracellular reactive oxygen species (ROS). Moreover, could accelerate blood coagulation through activating factor VIII platelet aggregation. Effective healing was achieved using in Staphylococcus aureus-infected mouse skin model. This study sheds light on development medicine-inspired therapeutic drugs.

Язык: Английский

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EDTA-Functionalized Carbon Dots–Metal Nanozymes Based on Coordination Chemistry: Species of Metal Ions Determines Enzyme-Mimicking Catalyzed Activities

ACS Materials Letters, Год журнала: 2024, Номер 6(4), С. 1112 - 1119

Опубликована: Фев. 26, 2024

Metal ion-carbon based nanomaterials served as nanozymes to mimic the biocatalytic performance of natural enzymes. However, there are still challenges in constructing carbon dots (CDs)–metal with same coordination structure on chemistry and revealing effect metal ion species enzyme-mimicking catalyzed activities. Herein, EDTA-functionalized dots–metal (CDsEDTA-Me) different ions (Fe3+, Cu2+, Co2+) structures synthesized chemistry. Species CDsEDTA-Me determines CDsEDTA-Fe, CDsEDTA-Cu, CDsEDTA-Co display significant peroxidase (POD)-mimicking, superoxide dismutase (SOD)-mimicking activities, hydroxyl radical (•OH) scavenging ability, respectively. Compared horseradish peroxidase, affinity CDsEDTA-Fe H2O2 is improved by 47 times. The Vm value TMB substrate 1.19 × 10–7 M s–1. POD-mimicking activity increases linearly increase stability constants CDsEDTA-Me, which indicates that can be predicted CDsEDTA-Me. provides a strategy for construction CDs-metal rational improvement

Язык: Английский

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