Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Advanced Science, Journal Year: 2024, Volume and Issue: 11(33)

Published: July 1, 2024

Abstract Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one best strategies for increasing catalytic activities, selectivity, long‐term durability these materials. Advanced sheet supported by metal atom‐based have become a critical topic in fields renewable energy conversion systems, storage devices, sensors, biomedicine owing to maximum utilization efficiency, precisely located centers, specific electron configurations, unique reactivity, precise chemical tunability. Several offer excellent support are attractive applications energy, medical research, such as oxygen reduction, production, hydrogen generation, fuel selective detection, enzymatic reactions. The strong metal–metal metal–carbon with metal–heteroatom (i.e., N, S, P, B, O) bonds stabilize optimize electronic structures atoms due interfacial interactions, yielding activities. These provide models understanding fundamental problems multistep This review summarizes substrate structure‐activity relationship different active sites based on experimental theoretical data. Additionally, new synthesis procedures, physicochemical characterizations, biomedical discussed. Finally, remaining challenges developing efficient SMA/DMA/TMA/MMA‐based presented.

Language: 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, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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.

Language: Английский

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In-situ study of the hydrogen peroxide photoproduction in seawater on carbon dot-based metal-free catalyst under operation condition

Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 5956 - 5964

Published: April 19, 2024

Language: Английский

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Ultrabright Green-Emissive Nanodots for Precise Biological Visualization

Nano Letters, Journal Year: 2024, Volume and Issue: 24(7), P. 2264 - 2272

Published: Feb. 7, 2024

Developing general methods to fabricate water-dispersible and biocompatible fluorescent probes will promote different biological visualization applications. Herein, we report a metal-facilitated method ultrabright green-emissive nanodots via the one-step solvothermal treatment of rose bengal, ethanol, various metal ions. These metal-doped show good water dispersity, ultrahigh photoluminescence quantum yields (PLQYs) (e.g., PLQY Fe-doped (FeNDs) was ∼97%), low phototoxicity. Owing coordination effect ions, FeNDs realize glutathione detection with outstanding properties. Benefiting from high endoplasmic reticulum (ER) affinity chloride group, can act as an ER tracker long imaging capacity (FeNDs: >24 h; commercial tracker: ∼1 h) superb photostability achieve tissue in living

Language: Английский

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Enhanced the intrinsic oxidase-like activity of chiral carbon dots via manganese doping for selective catalytic oxidation

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 659, P. 687 - 696

Published: Jan. 6, 2024

Language: Английский

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An Injectable Chitosan-based Hydrogel Incorporating Carbon Dots with Dual Enzyme-Mimic Activities for Synergistically Treatment of Bacteria Infected Wounds

Colloids and Surfaces B Biointerfaces, Journal Year: 2024, Volume and Issue: 241, P. 114006 - 114006

Published: May 29, 2024

Language: Английский

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Single-atom nanozymes shines diagnostics of gastrointestinal diseases

Journal of Nanobiotechnology, Journal Year: 2024, Volume and Issue: 22(1)

Published: May 25, 2024

Various clinical symptoms of digestive system, such as infectious, inflammatory, and malignant disorders, have a profound impact on the quality life overall health patients. Therefore, chase for more potent medicines is both highly significant urgent. Nanozymes, novel class nanomaterials, amalgamate biological properties nanomaterials with catalytic activity enzymes, been engineered various biomedical applications, including complex gastrointestinal diseases (GI). Particularly, because their distinctive metal coordination structure ability to maximize atom use efficiency, single-atom nanozymes (SAzymes) atomically scattered centers are becoming viable substitute natural enzymes. Traditional nanozyme design strategies no longer able meet current requirements efficient diverse SAzymes due diversification complexity preparation processes. As result, this review emphasizes concept synthesis strategy SAzymes, corresponding bioenzyme-like activities, superoxide dismutase (SOD), peroxidase (POD), oxidase (OXD), catalase (CAT), glutathione (GPx). Then application in GI illnesses summarized, which should encourage further research into achieve better characteristics.

Language: Английский

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Elucidating Manganese Single‐Atom Doping: Strategies for Fluorescence Enhancement in Water‐Soluble Red‐Emitting Carbon Dots and Applications for FL/MR Dual Mode Imaging

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract The absence of the enhancement fluorescence in carbon dots (CDs) through doping with transition metal atoms (TMAs) hinders advancement multi‐modal bio‐imaging CDs high photoluminescence quantum yield (PLQY). Herein, Mn‐atomically‐doped R‐CDs (R‐Mn‐CDs) a PLQY 41.3% water is presented, enabling efficient vivo dual‐mode fluorescence/magnetic resonance (MR) imaging. comprehensive characterizations reveal that incorporation Mn leads to Mn‐N 2 O coordinating structure, resulting five significant effects: an increase sp conjugation domains, reduction band gap, decreased oxidation level, photo‐excited electron numbers, and suppression non‐radiative relaxation pathways. Collectively, these factors contribute remarkable R‐Mn‐CDs. Additionally, also endows R‐Mn‐CDs superior MR imaging capabilities due to, which highlights their promising prospect as dual‐modal platform for fluorescence/MR Furthermore, findings indicate introduction various TMAs, such Mn, Zn, Ni, Cu, can universally improve water‐soluble construction TMAs─O bonds. This research provides valuable theoretical insights into mechanisms underlying induced by TMAs offers guidance future design CDs.

Language: Английский

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Dopamine-mediated strategy coupled with the nanozyme catalysis of copper-doped sulfur-rich CDs for detecting NO2- in differential fluorescence

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137295 - 137295

Published: Jan. 1, 2025

Language: Английский

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Nanoenzyme-based sensors for the detection of anti-tumor drugs

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(2)

Published: Jan. 23, 2025

Language: Английский

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