Ultrafast ppb-level triethylamine detection sensor based on self-assembled hierarchical structures of Ag/WO3 nanoflowers

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1013, P. 178540 - 178540

Published: Jan. 1, 2025

Language: Английский

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Electrospun WO3/TiO2 Core–Shell Nanowires for Triethylamine Gas Sensing

Chemosensors, Journal Year: 2025, Volume and Issue: 13(2), P. 45 - 45

Published: Feb. 2, 2025

In this work, WO3/TiO2 core–shell (C-S) nanowires (NWs) were successfully synthesized by the coaxial electrospinning method and subsequent high-temperature calcination treatment. After some microscopic structural characterizations, although prepared WO3–TiO2 TiO2–WO3 C-S NWs displayed quite different surface morphologies, both of shell coatings uniform their typical thicknesses extremely close, with mean values 22 20 nm, respectively. gas sensing tests, exhibited good selectivity towards triethylamine (TEA) without significant interfering gases. Compared bare WO3 TiO2 NWs, showed better performance. Specifically, optimal operating temperature response to 100 ppm TEA 130 °C 106, which reduced 70 increased 5.73 times compared WO3, Obviously, nanostructures contributed improving performance materials TEA. Finally, hypothetical mechanisms proposed, expected have important reference significance for design target products applied sensing.

Language: Английский

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Noble Metal (Cu, Ag, Au) Modified PdPS Monolayers for Adsorption of SF₆ Decomposition Gases (H₂S, SO₂, SOF₂, and SO₂F₂): A Density Functional Theory Investigation

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 26017 - 26031

Published: Nov. 7, 2024

Sulfur hexafluoride (SF6) is extensively employed in gas-insulated switchgear (GIS) due to its exceptional insulating and arc-extinguishing properties. However, operational failures like arcing or overheating can lead the decomposition of SF6, releasing various gases such as H2S, SO2, SOF2, SO2F2, depending on fault type. The urgent need for efficient real-time sensors detect these highlighted. This study examines adsorption characteristics sensing materials based palladium phosphide (PdPS) composites with noble metals (Cu, Ag, Au) utilizing first-principles density functional theory simulations. analysis includes parameters distance, charge density, binding energy, transfer, molecular frontier orbitals, desorption kinetics. Optimal embedding sites were identified at TP positions PdPS surface, yielding energies −1.529 eV Cu, −0.987 −1.04 Au. Notably, while pristine exhibited unfavorable profiles, Cu-PdPS composite demonstrated significant capabilities −1.359 −1.245 −0.902 −0.806 SO2F2. Desorption kinetics reveal that Cu-modified system offers rapid times, notably 4.24 s SO2F2 room temperature, positioning it an excellent candidate ambient detection. Additionally, configuration shows enhanced versatility across varying temperatures, particularly excelling high-temperature conditions. findings underscore potential PdPS-based developing advanced sensors, paving way integrating low-power, high-sensitivity monitoring systems SF6 gas detection GIS applications, implications future research toward AI-driven models quantitative mixture analysis.

Language: Английский

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Chemoresistive Gas Sensors Based on Electrospun 1D Nanostructures: Synergizing Morphology and Performance Optimization

Sensors, Journal Year: 2024, Volume and Issue: 24(21), P. 6797 - 6797

Published: Oct. 23, 2024

Gas sensors are essential for safety and quality of life, with broad applications in industry, healthcare, environmental monitoring. As urbanization industrial activities intensify, the need advanced air monitoring becomes critical, driving demand more sensitive, selective, reliable sensors. Recent advances nanotechnology, particularly 1D nanostructures like nanofibers nanowires, have garnered significant interest due to their high surface area improved charge transfer properties. Electrospinning stands out as a promising technique fabricating these nanomaterials, enabling precise control over morphology leading exceptional attributes, including sensitivity, rapid response, excellent stability harsh conditions. This review examines current research on chemoresistive gas based produced by electrospinning. It focuses how composition nanomaterials influence key sensor characteristics-sensitivity, selectivity, stability. The highlights recent advancements incorporating metal oxides, carbon conducting polymers, along modifications enhance performance. also explores use fiber-based composite materials detecting oxidizing, reducing, volatile organic compounds. These composites leverage properties various achieve sensitivity allowing detection wide range gases diverse further addresses challenges scaling up production suggests future directions overcome technological limitations improve performance both domestic applications.

Language: Английский

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Rationally design of hollow rambutan-like zinc ferrite sensing composites for high-performance toluene detection

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179234 - 179234

Published: Feb. 1, 2025

Language: Английский

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Efficient detection of triethylamine by In2O3@Co3O4 core-shell nanofibers synthesized by coaxial electrospinning

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137831 - 137831

Published: April 1, 2025

Language: Английский

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A Fast-Response H2s Gas Sensor Based on Co3o4 Nanoparticles-Modified Wo3 Nanosheets

Published: Jan. 1, 2025

Language: Английский

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Facile design based on (0 0 2) crystal-exposed snowflake-like CuO/WO3: H2S gas sensor with ultra-high and fast response possible

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Fabrication of MEMS-based TiO2/SnO2 core-shell nanowires sensor for enhanced H2S sensing

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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