Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163809 - 163809
Опубликована: Май 1, 2025
Язык: Английский
Applied Surface Science Advances, Год журнала: 2025, Номер 27, С. 100736 - 100736
Опубликована: Март 24, 2025
Язык: Английский
Процитировано
1
Analytical Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Март 24, 2025
Rapid and sensitive detection of 2-ethylhexanol vapor, a critical indicator overheating in electrical cables, is essential for the early warning potential fires. However, traditional chemiresistive gas sensors are inadequate real-time owing to its chemical stability. Herein, sensor based on mesoporous Nd-doped In2O3 designed rapid ppb-level vapor. The exhibits high response (22.8@1 ppm), excellent sensitivity (4.7 ppm–1), short time (29 s), low limit (760 ppb). After Nd doping, approximately 20 folds higher than that sensor. Furthermore, wireless sensing device has been developed enable monitoring cable overheating. outstanding performance can be attributed neodymium doping within framework, which enhances accessibility active sites interface materials, increases concentration surface-adsorbed oxygen at gas–solid interface, improves adsorption capacity 2-ethylhexanol. This work showcases an efficient semiconductor metal oxide capable rapidly sensitively detecting parts per billion levels induced by demonstrating significant
Язык: Английский
Процитировано
0
Vacuum, Год журнала: 2025, Номер 238, С. 114315 - 114315
Опубликована: Апрель 9, 2025
Язык: Английский
Процитировано
0
ACS Applied Electronic Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 16, 2025
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Апрель 24, 2025
Abstract Formaldehyde is a frequent indoor pollutant that poses risk to human and environmental health suspected be carcinogen. However, achieving high sensitivity selectivity for real‐time applications remains challenging. In this study, room‐temperature operated formaldehyde chemiresistor developed by cerium dioxide/indium oxide (CeO 2 /In O 3 ) nanocomposite exclusive detection. The synthesized using hydrothermal, forming CeO nanospheres grown on nanocubes. This unique structure enhances the sensing capabilities of , allowing it detect in 1–50 ppm range, 0.157 detection limit earned. sensor exhibits an impressive response 175.05 at 50 room temperature shows responsiveness various other substances, instance, methanol, ethanol, aniline, benzene, toluene, acetone, ammonia. Additionally, demonstrated moderate selectivity, sensitivity, stability, speedy response/recovery times, resilience humidity. work presents promising strategy formaldehyde.
Язык: Английский
Процитировано
0
Langmuir, Год журнала: 2025, Номер unknown
Опубликована: Апрель 28, 2025
Metal nanoparticle surface modification is a simple and efficient method to realize highly sensitive detection for chemiresistive gas sensors. Although few theoretical explanations the complicated matching relationship in sensing system constructed from modified metal, semiconductor material, target have been proposed, there are no corresponding specific evaluation parameters based on metal sensitization mechanism, which crucial guidance of high-performance materials design. Herein, taking MnO2-based sensors as examples, improvement effect nanoparticles gas-sensing properties toward HCHO NH3 investigated. Combined with first-principle calculations density functional theory (DFT), novel resonant coupling model impurity energy levels, originating charge transfer between first proposed reveal mechanism that strength determines carrier concentration MOS. Coupling closely positive correlated response, provides an effective parameter semiquantitatively describe gas. Our work establishes clarifies correlation excavates new road further comprehend will provide guide design materials.
Язык: Английский
Процитировано
0
Micro and Nanostructures, Год журнала: 2025, Номер unknown, С. 208204 - 208204
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
Sensors, Год журнала: 2025, Номер 25(10), С. 3096 - 3096
Опубликована: Май 14, 2025
Formaldehyde is the most abundant carbonyl globally and biggest driver of cancer risk in United States among hazardous air pollutants. Ambient formaldehyde concentration measurements are generally sparse due to high measurement costs limited infrastructure. Recent studies have used low-cost quality sensors affordably improve spatial coverage provide real-time measurements. Our previous research evaluated laboratory performance a electrochemical sensor (Sensirion SFA30) over concentrations ranging from 0 76 ppb. The exhibited good linearity response, low limit detection, accuracy detecting formaldehyde. This study cross-sensitivity SFA30 Gravity (electrochemical sensors) 326 ppb evaluation system, with broadband cavity-enhanced absorption spectroscopy obtain reference We mixture five outdoor trace gases (CO, NO, NO2, O3, isobutylene) two indoor VOCs (methanol isopropyl alcohol). results suggest that may be useful for when levels well above background screening tools environments, if properly calibrated.
Язык: Английский
Процитировано
0
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163809 - 163809
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0