Optimized Pt Loaded Cerium Tungstate Electrochemical Sensor for Rapid Response and Recovery NO2 Detection DOI Creative Commons
Jiaxin Li, Xichao Mo,

Chonghui Zhu

et al.

Advanced Sensor Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Abstract Nitrogen dioxide (NO 2 ) is a dangerous environmental pollutant that poses risk to human health and ecosystems, leading respiratory disease degradation. Current detection methods often suffer from high power consumption, sensitivity, limited stability. In this study, an electrochemical gas sensor synthesized by calcination hydrothermal method presented using cerium tungstate (Ce (WO 4 3 as support material doped with 0.5 wt.% platinum (Pt). The has limit low ppm, response time of 27.1 s, recovery 7.9 s at room temperature. It also better selectivity for NO than other gases good humidity resistance. improved sensing performance attributed the increase in oxygen vacancy concentration favorable interaction between Pt Ce , which promotes active site formation catalytic efficiency. These results highlight potential Pt/Ce effective energy‐efficient detection, providing new approach real‐time monitoring fast selectivity.

Language: Английский

A self-regenerating Pt/Ge-MFI zeolite for propane dehydrogenation with high endurance DOI

He Hong,

Zhikang Xu, Bingbao Mei

et al.

Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Supported noble metal cluster catalysts are typically operated under severe conditions involving switches between reducing and oxidizing atmospheres, causing irreversible transformation of catalyst structure thereby leading to permanent deactivation. We discovered that various Pt precursors spontaneously disperse in Ge-MFI zeolite, which opposes the Ostwald ripening phenomenon, producing self-regenerating Pt/Ge-MFI for propane dehydrogenation. These reversibly switch clusters single-atoms response reaction regeneration conditions. This environmental adaptability allows them completely self-regenerate over 110 reaction-regeneration cycles They exhibited unprecedented sintering-resistance when exposed air at 800 °C 10 days. Such spontaneous dispersion Ge-zeolites is a robust versatile methodology fabricating Rh, Ru, Ir Pd catalysts.

Language: Английский

Citations

0
Optimized Pt Loaded Cerium Tungstate Electrochemical Sensor for Rapid Response and Recovery NO2 Detection DOI Creative Commons
Jiaxin Li, Xichao Mo,

Chonghui Zhu

et al.

Advanced Sensor Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Abstract Nitrogen dioxide (NO 2 ) is a dangerous environmental pollutant that poses risk to human health and ecosystems, leading respiratory disease degradation. Current detection methods often suffer from high power consumption, sensitivity, limited stability. In this study, an electrochemical gas sensor synthesized by calcination hydrothermal method presented using cerium tungstate (Ce (WO 4 3 as support material doped with 0.5 wt.% platinum (Pt). The has limit low ppm, response time of 27.1 s, recovery 7.9 s at room temperature. It also better selectivity for NO than other gases good humidity resistance. improved sensing performance attributed the increase in oxygen vacancy concentration favorable interaction between Pt Ce , which promotes active site formation catalytic efficiency. These results highlight potential Pt/Ce effective energy‐efficient detection, providing new approach real‐time monitoring fast selectivity.

Language: Английский

Citations

0