Synergistic effect of charge transfer and interlayer swelling in V2CTx/SnS2 driving ultrafast and highly sensitive NO2 detection at room temperature

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 411, P. 135788 - 135788

Published: April 9, 2024

Language: Английский

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A Strategy for Multigas Identification Using Multielectrical Parameters Extracted from a Single Carbon-Based Field-Effect Transistor Sensor

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(6), P. 3126 - 3136

Published: June 6, 2024

Given the widespread utilization of gas sensors across various industries, detection diverse and complex target gases presents a significant challenge in designing with multigas capability. Although constructing sensor array widely used chemiresistive is one solution, it difficult for single to simultaneously detect different gases, as can only gas. The intrinsic reason this bottleneck that rely entirely on resistivity unique parameter evaluate sensing properties sensors, such sensitivity, selectivity, etc. Herein, field-effect transistor (FET) abundant electrical parameters employed prepare variety gases. Semiconducting carbon nanotubes (CNTs) are selected channel material, which modified by Pd nanoparticles enhance sensors. By extracting transconductance, threshold voltage, from transfer characteristic curves FET, correlation between multielectrical information established subsequent data analysis. Through principal component analysis algorithm, identification six be finally achieved relying solely carbon-based FET-type sensor. We hope our work solve principle expected reduce system complexity cost caused design arrays, offering valuable guidance technology.

Language: Английский

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Self-powered ammonia gas sensor based on Ta2O5/Nb2AlC nanocomposites for environmental monitoring in vegetable greenhouses

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(1), P. 115294 - 115294

Published: Jan. 5, 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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Rationalizing Graphene–ZnO Composites for Gas Sensing via Functionalization with Amines

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(9), P. 735 - 735

Published: April 23, 2024

The rational design of composites based on graphene/metal oxides is one the pillars for advancing their application in various practical fields, particularly gas sensing. In this study, a uniform distribution ZnO nanoparticles (NPs) through graphene layer was achieved, taking advantage amine functionalization. beneficial effect groups arrangement NPs and efficiency immobilization revealed by core-level spectroscopy, pointing out strong ionic bonding between aminated (AmG) ZnO. stability resulting Am-ZnO nanocomposite confirmed demonstrating that its morphology remains unchanged even after prolonged heating up to 350 °C, as observed electron microscopy. On-chip multisensor arrays composed both AmG were fabricated thoroughly tested, showing almost tenfold enhancement chemiresistive response upon decorating with nanoparticles, due formation p-n heterojunctions. Operating at room temperature, chips exhibited high robustness detection limit 3.6 ppm 5.1 ammonia ethanol, respectively. Precise identification studied analytes achieved employing pattern recognition technique linear discriminant analysis process acquired response.

Language: Английский

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Machine-learning-assisted n-GaN-Au/PANI gas sensor array for intelligent and ultra-accurate ammonia recognition

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153705 - 153705

Published: July 3, 2024

Language: Английский

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Ti₃C₂T_x Nanosheet/Bi₂S₃ Nanobelt Composites for NO₂ Gas Sensing

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 13062 - 13070

Published: May 24, 2024

Along with the revolution of Internet Things (IoT), smart, flexible, easily fabricated, and highly sensitive gas sensors are essential for many portable electronics. In this study, a wearable NO2 sensor based on nanomesh structure woven Ti3C2Tx microflakes Bi2S3 nanobelts operated at room temperature was successfully designed prepared. The effects mass ratio between two materials performance were evaluated. embedded inside accordion-like provide large specific surface areas abundant active sites adsorption molecules. Attributed to high conductivity Ti3C2Tx, carriers generated in layers transmitted during sensing, thus significantly reducing response recovery times. containing 30 wt % exhibits excellent sensing performance, fast response/recovery rates, stability even arbitrary deformed shape conditions. Upon exposure 1 ppm NO2, is 12.67, times 5/28 s, respectively. A stable can be maintained after 1500 cycles deformation. This work demonstrates simple but reliable manufacturing strategy next generation IoT monitoring network-linking human activities.

Language: Английский

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High-performance ammonia sensor at room temperature based on 2D conductive MOF Cu3(HITP)2

Talanta, Journal Year: 2024, Volume and Issue: 285, P. 127226 - 127226

Published: Nov. 19, 2024

Language: Английский

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Ammonia detection based on Pd/Rh-GaN and recognition of disease markers of nitrogen compounds assistant by deep learning

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152683 - 152683

Published: May 29, 2024

Language: Английский

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Effect of doping (Sn and In) on CdS thin films for ammonia sensing at room temperature

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 376, P. 115567 - 115567

Published: June 7, 2024

Language: Английский

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