Study of adsorption behavior of HCN and H2S molecules over unlopped and Al-doped zinc oxide monolayer: A DFT approach

Results in Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 100439 - 100439

Published: Jan. 1, 2025

Language: Английский

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SnO₂/MWCNTs Nanostructured Material for High-Performance Acetone and Ethanol Gas Sensors

ACS Omega, Journal Year: 2025, Volume and Issue: 10(7), P. 7283 - 7294

Published: Feb. 12, 2025

This work presents a novel nanostructured material SnO2/multiwalled carbon nanotubes (MWCNTs) as sensing film for the detection of acetone and ethanol vapors. The fabrication SnO2/MWCNT chemoresistive sensors demonstrates cost-effective hydrothermal method using centrifugation technique. investigation synthesized SnO2/MWCNTs nanocomposite represents various techniques, such scanning electron microscopy (SEM), transmission (TEM), energy-dispersive X-ray (EDX) elementary analysis, EDX mapping, diffraction (XRD) analysis. sensor exhibits rapid response/recovery behavior toward (53/5 s) (86/3 while showing satisfactory values responsiveness (Sact = 90.5 Setn 21, n 100 ppm). low limit these vapors is assigned concentration 1 ppm, where discernible responses are elicited. Thus, production efforts have yielded high-end volatile organic compound (VOC) detector, highly suitable human technological engineering activity.

Language: Английский

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Pristine and Ni-doped In2O3 pyramids response to NO2 gas: a transition state theory study

Deleted Journal, Journal Year: 2025, Volume and Issue: 246(1)

Published: March 24, 2025

Language: Английский

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First-Principles Guided Design of Pd-Decorated V2O5/Porous Silicon Composites for High-Performance NO2 Sensing at Room Temperature

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 513 - 513

Published: March 28, 2025

A Pd-decorated V2O5/porous silicon (Pd-V2O5/PSi) composite was synthesized via magnetron sputtering for enhanced NO2 gas sensing. The material’s morphology and composition were systematically characterized, its sensing performance evaluated through comprehensive experimental measurements first-principles calculations. decoration of Pd nanoparticles significantly improved the capabilities V2O5/PSi composite, particularly enhancing sensitivity response/recovery characteristics. Experimental results revealed a 3.1-fold increase in response to specific concentrations (ppm level) compared undecorated sensor. exhibited rapid at room temperature with excellent selectivity, reproducibility, long-term stability. First-principles calculations elucidated structural, electronic, adsorption properties Pd-V2O5/PSi uncovering mechanism environments. This combined theoretical study provides valuable insights developing advanced sensors lays foundation optimizing metal oxide-based materials.

Language: Английский

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Cl2 gas properties, temperature, and humidity effects on SnO2 sensor response: transition state theory study

Journal of Molecular Modeling, Journal Year: 2025, Volume and Issue: 31(5)

Published: April 15, 2025

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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NO2 properties that affect its reaction with pristine and Pt-doped SnS2: a gas sensor study

Journal of Molecular Modeling, Journal Year: 2024, Volume and Issue: 30(12)

Published: Nov. 26, 2024

Language: Английский

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