Functional Tailoring of Multi‐Dimensional Pure MXene Nanostructures for Significantly Accelerated Electromagnetic Wave Absorption

Small, Год журнала: 2023, Номер 19(41)

Опубликована: Июнь 8, 2023

Transition metal carbide (Ti3 C2 Tx MXene), with a large specific surface area and abundant functional groups, is promising candidate in the family of electromagnetic wave (EMW) absorption. However, high conductivity MXene limits its EMW absorption ability, so it remains challenge to obtain outstanding attenuation ability pure MXene. Herein, by integrating HF etching, KOH shearing, high-temperature molten salt strategies, layered (L-MXene), network-like nanoribbons (N-MXene NRs), porous monolayer (P-MXene ML), layer L) are rationally constructed favorable microstructures states for HF, KOH, KCl/LiCl used functionalize tune microstructure state (F- , OH- Cl- terminals), thereby improving capacity MXene-based nanostructures. Impressively, unique structure, proper electrical conductivity, area, defects, nanostructures achieve good impedance matching, dipole polarization, conduction loss, thus inheriting excellent performance. Consequently, L-MXene, N-MXene NRs, P-MXene ML, L enable reflection loss (RL ) value -43.14, -63.01, -60.45, -56.50 dB matching thickness 0.95, 1.51, 3.83, 4.65 mm, respectively.

Язык: Английский

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Machine‐Learning‐Assisted Nanozyme Design: Lessons from Materials and Engineered Enzymes

Advanced Materials, Год журнала: 2023, Номер 36(10)

Опубликована: Янв. 26, 2023

Abstract Nanozymes are nanomaterials that exhibit enzyme‐like biomimicry. In combination with intrinsic characteristics of nanomaterials, nanozymes have broad applicability in materials science, chemical engineering, bioengineering, biochemistry, and disease theranostics. Recently, the heterogeneity published results has highlighted complexity diversity terms consistency catalytic capacity. Machine learning (ML) shows promising potential for discovering new materials, yet it remains challenging design based on ML approaches. Alternatively, is employed to promote optimization intelligent application engineered enzymes. Incorporation successful algorithms used enzymes can concomitantly facilitate guided development next‐generation desirable properties. Here, recent progress ML, its utilization enzymes, how emergent applications serve as strategies circumvent challenges associated time‐expensive laborious testing nanozyme research summarized. The examples ML‐aided also highlighted, special focus unified aims enhancing recapitulation substrate selectivity activity.

Язык: Английский

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Lignocellulosic Biomass‐Based Carbon Dots: Synthesis Processes, Properties, and Applications

Small, Год журнала: 2023, Номер 19(48)

Опубликована: Авг. 3, 2023

Carbon dots (CDs), a new type of carbon-based fluorescent nanomaterial, have attracted widespread attention because their numerous excellent properties. Lignocellulosic biomass is the most abundant renewable natural resource and possesses broad potential to manufacture different composite smart materials. Numerous studies explored using components (such as cellulose, hemicellulose, lignin) in lignocellulosic produce CDs. There are few papers systemically aiming review state-of-the-art works related biomass-derived In this review, significant advances synthesis processes, formation mechanisms, structural characteristics, optical properties, applications biomass-based CDs such cellulose-based CDs, hemicellulose-based lignin-based latest research reviewed. addition, future directions on improvement technology raw materials enhance properties proposed. This will serve road map for scientists engaged exploring more science fields achieve highest material performance goals

Язык: Английский

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Iron-Doped Polymer Dots with Enhanced Fluorescence and Dual Enzyme Activity for Versatile Bioassays

Analytical Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Фев. 7, 2024

Nanozymes with multiple functionalities endow biochemical sensing more sensitive and efficient analytical performance by widening the modes. Meanwhile, target-oriented design of multifunctional nanozymes for certain biosensing remains challenging. Herein, a constructive strategy doping iron into polymer dots (PDs) to achieve excellent oxidase-mimicking peroxidase-mimicking activity is proposed. Compared Fe-free PDs prepared under same mild condition, Fe-doped (Fe-PDs) exhibit greatly boosted fluorescence at 500 nm. While applying 3,3′,5,5′-tetramethylbenzidine (TMB) as chromogenic substrate, Fe-PDs can be further quenched oxTMB due inner filter effect (IFE). Inspired this, simple but colorimetric fluorometric dual-mode platform developed monitoring reducing substances ascorbic acid (AA), α-glucosidase (α-Glu), its inhibitors (AGIs). We believe that such enzyme-mimic materials will provoke exploration multimode strong practicality serve versatile tool in sensing.

Язык: Английский

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Synthesis of 1D LaFeO3 nanofibers/2D MXene heterostructures for formaldehyde detection at low temperature

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 415, С. 136011 - 136011

Опубликована: Май 21, 2024

Язык: Английский

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Graphene quantum dots as metal-free nanozymes for chemodynamic therapy of cancer

Matter, Год журнала: 2024, Номер 7(3), С. 977 - 990

Опубликована: Янв. 10, 2024

Язык: Английский

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Bimetallic-MOF Tunable Conductive Hydrogels to Unleash High Stretchability and Sensitivity for Highly Responsive Flexible Sensors and Artificial Skin Applications

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(12), С. 7288 - 7300

Опубликована: Июнь 6, 2024

Metal–organic frameworks (MOFs) are widely applied in various fields, including energy storage, drug delivery, wastewater treatment, and much more. However, their use hydrogels is limited due to low dispersion which causes agglomeration the hydrogel network many properties of sacrifices. Similarly, conductive have emerged as a promising material for skin-like sensors excellent biocompatibility mechanical flexibility. like MOFs, also face challenges such stretchability, toughness, susceptibility fatigue, resulting sensing range large response time-reduced durability sensors. In this study, highly stretchable, tough, antifatigue composite poly(dodecyl methacrylate-acrylamide-2-(acryloyloxy)ethyl trimethylammonium chloride) bimetallic metal–organic framework [p(DA-AM-AETAC)BM-MOF] was developed by integrating BM-MOFs into it. To achieve uniform within network, positively charged surfactant, ethyl hexadecyl dimethylammonium bromide, used. It facilitates formation hydrophobic interactions between matrix surface BM-MOFs. Furthermore, it can interact with surfactant polymer chains through physical interactions, significantly enhancing hydrogel. The BM-MOF-based exhibited impressive stretchability (1588%) toughness (537 kJ m–3), along exceptional properties. Moreover, demonstrated high conductivity 1.3 S/m tensile strain sensitivity ranging from 0.5 700% gauge factor 14.8 at response–recovery 195–145 ms. p(DA-AM-AETAC)BM-MOF displayed sensitive, reliable, repetitive detection wide human activities, wrist elbow rotation, finger bending, swallowing motion, speaking, well handwriting drawing. monitor pressure mimic skin. This highlights potential wearable strain, pressure, artificial skin flexible devices.

Язык: Английский

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Product Peroxidation Inhibition in Methane Photooxidation into Methanol

Advanced Science, Год журнала: 2024, Номер 11(12)

Опубликована: Янв. 17, 2024

Abstract Methane photooxidation into methanol offers a practical approach for the generation of high‐value chemicals and efficient storage solar energy. However, propensity C─H bonds in desired products to cleave more easily than those methane molecules results continuous dehydrogenation process, inevitably leading peroxidation. Consequently, inhibiting peroxidation is perceived as one most formidable challenges field direct conversion methanol. This review thorough overview typical mechanisms involved radical mechanism active site regulatory methods employed inhibit product photooxidation. Additionally, several perspectives on future research direction this crucial are proposed.

Язык: Английский

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Cu9S5/coal gasification fine slag composites for electromagnetic wave absorption using compositional synergies and interface engineering strategies

Materials Research Bulletin, Год журнала: 2024, Номер 174, С. 112720 - 112720

Опубликована: Фев. 6, 2024

Язык: Английский

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Fluorescent Iron-Doped Polymer Dot Nanozyme-Based Cascade System for Dual-Mode Detection of Acetylcholinesterase Activity and Its Inhibitors

Analytical Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Сен. 18, 2024

The advancement of acetylcholinesterase (AChE) activity and its inhibitor assays is crucial for clinical diagnosis, drug screening, environmental monitoring. A nanozyme-mediated cascade reaction system could offer promising prospects a wide range applications in such biosensing; however, the creation nanozyme catalysts with diverse functionalities remains significant challenge. Herein, we have proposed multifunctional iron-doped polymer dots (Fe-PDs) possessing excellent fluorescence peroxidase (POD)-mimicking activity. Notably, Fe-PDs capable catalyzing H

Язык: Английский

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