A NO2 Sensitive MnO2/Graphene Oxide Composite Based Gas Sensor

Chemosensors, Год журнала: 2025, Номер 13(3), С. 96 - 96

Опубликована: Март 8, 2025

Nanosized manganese dioxide (MnO2) material has been successfully incorporated into a graphene oxide (GO) sensitive layer. Since this type of heterojunction never reported in the literature related to gas sensing, these sensors were prepared, tested, and reported. The morphological properties composition MnO2@GO have thoroughly studied via FESEM, XRD, Raman spectroscopy, HR-TEM, ATR-IR. Gas sensitivity selectivity towards mainly NO2 other gases (NH3, CO, ethanol, benzene, H2) also studied. obtained exposed different concentrations ranging from 200 ppb 1000 at 150 °C under close real conditions (25% relative humidity 70% humidity). shown high response 16.3% 1 ppm dry higher 44% RH same concentration. Finally, it strong for NO2.

Язык: Английский

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Thin Palladium Nanograins Film for Efficient and Selective Hydrogen Sensor

Опубликована: Янв. 1, 2025

Язык: Английский

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Rare Earth Single Atoms Steering Hydrogen Spillover Over Pd/WO₃ Toward High‐Efficiency H₂ Sensor at Near Room Temperature

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 26, 2025

Abstract Metal oxide semiconductor (MOS) supported Pd materials are potential candidates for H 2 sensors, while effective detection at near room temperature remains a great challenge owing to the difficulty of hydrogen migration from low temperature. Herein, guided by theoretical calculations, rare earth single atoms doping nanoparticles on WO 3 nanorods with tunable work function differences (ΔФ) and oxygen vacancies precisely developed improve sensing performances. The resultant Ce‐Pd/WO presents highest response 31.3 toward 50 ppm , showing 6 times improvement over Pd/WO which realizes trace fast . Density functional theory results reveal that energy barrier formation vacancy decrease after introducing atoms, lowest ΔФ exhibits most facile spillover desorption. in situ spectra characterization experiments further demonstrate highly improved Significantly, real‐time monitoring application device leak (0.1 V/V%) Al‐air batteries is also verified. This can shed light development high‐efficiency sensor via precise modulation functions.

Язык: Английский

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Advanced biosensing technologies for cardiac troponin I Detection: Challenges and future directions in personalized heart health management

Microchemical Journal, Год журнала: 2024, Номер unknown, С. 112462 - 112462

Опубликована: Дек. 1, 2024

Язык: Английский

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