Preparation and Application of 2D MXene-Based Gas Sensors: A Review

Chemosensors, Journal Year: 2021, Volume and Issue: 9(8), P. 225 - 225

Published: Aug. 14, 2021

Since MXene (a two-dimensional material) was discovered in 2011, it has been favored all aspects due to its rich surface functional groups, large specific area, high conductivity, porosity, organic bonds, and hydrophilicity. In this paper, the preparation of is introduced first. HF etching first method for MXene; however, corrosive, resulting development situ (fluoride + HCl). Due harmful effects fluorine terminal on performance MXene, a fluorine-free developed. The increase interlayer spacing brought about by adding an intercalator can affect MXene’s performance. usual methods render inevitably agglomerate yields are insufficient. Many new were researched order solve problems agglomeration yield. Secondly, application MXene-based materials gas sensors discussed. often regarded as flexible sensor, detection ppb-level acetone at room temperature observed time. After formation composite materials, increasing area increased number active sites adsorption sensitivity improved. Moreover, paper discusses gas-sensing mechanism MXene. metallic affected expansion lamellae will be doped with H2O oxygen during process become p-type semiconductor. A p-n heterojunction Schottky barrier forms combinations other semiconductors; thus, sensitivities regulated controlled them. Although there only several reports sensors, expected that effectively detect gases temperature, especially NH3 VOC gas. Finally, challenges opportunities sensor

Language: Английский

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Advances of 2D‐Enabled Photothermal Materials in Hybrid Solar‐Driven Interfacial Evaporation Systems toward Water‐Fuel‐Energy Crisis

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Sept. 4, 2023

Abstract The development of a multi‐functional solar‐driven interfacial evaporation (SDIE) system remains significant challenge for its large‐scale applications. By taking advantage high surface area, excellent young's moduli, anchoring/coupling capability, large absorption surface, strong in the broadband solar spectrum, and efficient photothermal conversion efficiencies 2D emerging materials (Xenes, Mxenes, etc.), hybrid SDIEs are developed to increase use energy beyond water production. This work aims offer systematic review recent advancement except graphene their role stimulate both fundamental applied research on utilizing underutilized auxiliary sources future integrated water, energy, environmental systems. For this purpose, first, most progress is discussed, mainly including Xenes, MXenes, TMDs‐inspired SDIEs. Second, structural optimization strategies modulation intrinsic performances highlighted. Third, cutting‐edge conceptual designs many applications such as thermoelectricity, salt recovery, hydrogen production broadly presented. Lastly, current challenges perspectives structures also mentioned.

Language: Английский

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MXenes-based nanomaterials for biosensing and biomedicine

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 479, P. 215002 - 215002

Published: Jan. 10, 2023

Language: Английский

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Self-Healing MXene- and Graphene-Based Composites: Properties and Applications

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: April 13, 2023

Abstract Today, self-healing graphene- and MXene-based composites have attracted researchers due to the increase in durability as well cost reduction long-time applications. Different studies focused on designing novel with enhanced sensitivity, stretchability, flexibility improved electrical conductivity, healing efficacy, mechanical properties, energy conversion efficacy. These properties can be employed field of wearable sensors, supercapacitors, anticorrosive coatings, electromagnetic interference shielding, electronic-skin, soft robotics, etc. However, it appears that more explorations are still needed achieve excellent arbitrary shape adaptability, suitable adhesiveness, ideal durability, high immediate responsibility, outstanding features. Besides, optimizing reaction/synthesis conditions finding strategies for functionalization/modification crucial aspects should comprehensively investigated. MXenes graphene exhibited superior electrochemical abundant surface terminations great area, which important evolve biomedical sensing stretchability criteria need their future Herein, most recent advancements pertaining applications deliberated, focusing challenges perspectives.

Language: Английский

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MXenes and MXene-based (nano)structures: A perspective on greener synthesis and biomedical prospects

Ceramics International, Journal Year: 2022, Volume and Issue: 48(17), P. 24144 - 24156

Published: May 14, 2022

Language: Английский

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Synthesis, Toxicity Assessment, Environmental and Biomedical Applications of MXenes: A Review

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(11), P. 1797 - 1797

Published: May 24, 2022

MXenes are a family of two-dimensional (2D) composite materials based on transition metal carbides, nitrides and carbonitrides that have been attracting attention since 2011. Combination electrical mechanical properties with hydrophilicity makes them promising for biomedical applications. This review briefly discusses methods the synthesis MXenes, their potential applications in medicine, ranging from sensors antibacterial agents to targeted drug delivery, cancer photo/chemotherapy, tissue engineering, bioimaging, environmental such as adsorbents. We focus vitro vivo toxicity possible mechanisms. discuss analogies other 2D graphene, mentioning greater biocompatibility MXenes. identify existing barriers hinder formation objective knowledge about The most important these differences composition structure, including level oxidation, number layers flake size; functionalization, test concentrations, duration exposure, individual characteristics biological objects Finally, we key areas further research need involve new nanotoxicology, predictive computational methods. Such studies will bring closer prospect widespread industrial production safe use MXene-based products.

Language: Английский

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A Unified Therapeutic–Prophylactic Tissue‐Engineering Scaffold Demonstrated to Prevent Tumor Recurrence and Overcoming Infection toward Bone Remodeling

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(25)

Published: March 20, 2023

Osteosarcoma occurs in children and adolescents frequently leads to a high fatality rate. Although surgical resection is the most common methods clinic, patients always suffer from tumor metastasis recurrence it difficult for them self-repair large bone defects. Furthermore, postoperative infection bacteria triggers an inflammatory response hinders bone-repair process. This work demonstrates gadolinium (Gd)-complex molybdenum sulfide (MoS2 ) co-doped N-acryloyl glycinamide (NAGA)/gelatin methacrylate (Gel-MA) multifunctional hydrogel (GMNG). The combination between NAGA Gel-MA endows GMNG with attractive mechanical properties controllable degradation ability. MoS2 improves system, which has excellent photothermal ability kill cells inhibit bacterial both vitro vivo. Based on Gd-complex, magnetic resonance imaging (MRI) effect can be used monitor position situation of hydrogel. Notably, accompanied by hydrogel, gradually released Gd3+ exhibits osteogenic property could promote new formation efficiently Therefore, this strategy supplies method prepare bone-defect-repair materials expected represent significant guidance reference development biomaterials tissue engineering.

Language: Английский

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Immuno-photodynamic Therapy (IPDT): Organic Photosensitizers and Their Application in Cancer Ablation

JACS Au, Journal Year: 2023, Volume and Issue: 3(3), P. 682 - 699

Published: Feb. 14, 2023

Photosensitizer-based photodynamic therapy (PDT) has been considered as a promising modality for fighting diverse types of cancers. PDT directly inhibits local tumors by minimally invasive strategy, but it seems to be incapable achieving complete eradication and fails prevent metastasis recurrence. Recently, increasing events proved that was associated with immunotherapy triggering immunogenic cell death (ICD). Upon specific wavelength light irradiation, the photosensitizers will turn surrounding oxygen molecules into cytotoxic reactive species (ROS) killing cancer cells. Simultaneously, dying tumor cells release tumor-associated antigens, which could improve immunogenicity activate immune However, progressively enhanced immunity is typically limited intrinsic immunosuppressive microenvironment (TME). To overcome this obstacle, immuno-photodynamic (IPDT) come one most beneficial strategies, takes advantage stimulate response unite inducing immune-OFF immune-ON ones, achieve systemic In Perspective, we provide review recent advances in organic photosensitizer-based IPDT. The general process responses triggered (PSs) how enhance antitumor pathway modifying chemical structure or conjugating targeting component discussed. addition, future perspectives challenges IPDT strategies are also We hope Perspective inspire more innovative ideas executable developments war against cancer.

Language: Английский

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Recent advances on MXene-based hydrogels for antibacterial and drug delivery applications

Process Biochemistry, Journal Year: 2023, Volume and Issue: 132, P. 200 - 220

Published: July 17, 2023

Language: Английский

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MXenes and heterostructures-based electrocatalysts for hydrogen evolution reaction: Recent developments and future outlook

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 92, P. 176 - 206

Published: Feb. 1, 2024

Language: Английский

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