Strong Metal–Support Interaction Induces Dual Reaction Sites for Ultrasensitive and Stable NO2 Detection in Extreme Environments DOI Open Access

Yucheng Ou,

Bing Wang,

Nana Xu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Abstract The tripartite combination of a high density and stability surface reaction sites, complemented by the longevity efficient transfer interface carriers, along with effective adsorption activation target gas molecules, jointly determines efficiency chemiresistors. In this work, strong metal–support interaction (SMSI) Pt─Ce 3+ is formed NaBH 4 reduction method thus prepares metal‐dynamically stable Pt NR ─CeO 2 Pt─Pt sites. formation SMSI induces recombination chemical structure CeO causing localization electron‐rich Ce , which greatly increases charge concentration at interface. experimental findings bonding catalytic effect optimized mode on gas, maintains activity 20–500 °C achieving notable detection response value 1.43 for 20 ppb NO . This work offers fresh insights into designing oxide chemiresistors customizing sites atomic level.

Language: Английский

Improving the Selectivity of Metal Oxide Semiconductor Sensors for Mustard Gas Simulant 2-Chloroethyl Ethyl Sulfide by Combining the Laminated Structure and Temperature Dynamic Modulation DOI Creative Commons
Yadong Liu, Shuangyi Zhao, Lingyun You

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(2), P. 525 - 525

Published: Jan. 17, 2025

Insufficient selectivity is a major constraint to the further development of metal oxide semiconductor (MOS) sensors for chemical warfare agents, and this paper proposed an improved scheme combining catalytic layer/gas-sensitive layer laminated structure with temperature dynamic modulation Mustard gas (HD) MOS sensor. simulant 2-Chloroethyl ethyl sulfide (2-CEES) was used as target gas, (Pt + Pd Rh)@Al2O3 material, Rh)@WO3 gas-sensitive Rh)@Al2O3/(Pt sensor prepared, tested 2-CEES 12 battlefield environment simulation gases under modulation. The results showed that only obvious characteristic peaks in resistance response curves HD certain conditions (100-400 °C, highest held 1 s lowest 2 s), its peak height reached 6.12, which far higher than other gases, thus realizing high 2-CEES. Meanwhile, also good sensitivity, detection limits, response/recovery times, anti-interference, stability, verified feasibility scheme.

Language: Английский

Citations

1
Ultrathin and porous NiO hierarchical nanosheets array for efficient detection of 2-CEES: mechanism analysis and simulation application DOI
Duo Zhang, Rui Gao, Ting Li

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163334 - 163334

Published: April 1, 2025

Language: Английский

Citations

0
Monolayer self-assembled film of Pd decorated In-doped SnO2 hollow nanospheres for ultrasensitive H2S MEMS gas sensors DOI
Yanlin Zhang, Zheng Zhang, Yuanyuan Luo

et al.

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: 440, P. 137845 - 137845

Published: May 7, 2025

Language: Английский

Citations

0
Fabrication of Oxygen Vacancy-Rich WO3 Porous Thin Film by Sputter Deposition for Ultrasensitive Mustard-Gas Simulants Sensor DOI Creative Commons
Haizhen Li,

Cancan Yan,

Jun Shen

et al.

Sensors, Journal Year: 2025, Volume and Issue: 25(10), P. 3049 - 3049

Published: May 12, 2025

Exposure to sulfur mustard can result in severe injury or even fatalities humans. Therefore, the development of reliable and high-performance sensors for detecting is critical. Herein, WO3 thin films are prepared as simulant (e.g., 2-chloroethyl ethylsulfide, 2-CEES) sensing materials using sputter deposition followed by high-temperature annealing. The 2-CEES gas fabricated via porous realize detection at 260 °C with an impressive limit (15 ppb), fast response (58 s), long-term stability, good selectivity. Through systematic optimization annealing parameters, tailored oxygen vacancy concentrations were prepared, facilitating device fabrication. This approach provides effective strategy batch production miniaturized devices enabling real-time monitoring vesicant agents.

Language: Английский

Citations

0
Crystal defects Boost cellulose conversion to C2 alcohols over Pd/WO3 catalysts DOI
Wei Jia,

Wengang Liu,

Yuandong Cui

et al.

Journal of Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 115860 - 115860

Published: Nov. 1, 2024

Language: Английский

Citations

1
Strong Metal–Support Interaction Induces Dual Reaction Sites for Ultrasensitive and Stable NO2 Detection in Extreme Environments DOI Open Access

Yucheng Ou,

Bing Wang,

Nana Xu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 31, 2024

Abstract The tripartite combination of a high density and stability surface reaction sites, complemented by the longevity efficient transfer interface carriers, along with effective adsorption activation target gas molecules, jointly determines efficiency chemiresistors. In this work, strong metal–support interaction (SMSI) Pt─Ce 3+ is formed NaBH 4 reduction method thus prepares metal‐dynamically stable Pt NR ─CeO 2 Pt─Pt sites. formation SMSI induces recombination chemical structure CeO causing localization electron‐rich Ce , which greatly increases charge concentration at interface. experimental findings bonding catalytic effect optimized mode on gas, maintains activity 20–500 °C achieving notable detection response value 1.43 for 20 ppb NO . This work offers fresh insights into designing oxide chemiresistors customizing sites atomic level.

Language: Английский

Citations

0