Industrial Potential of Formaldehyde Gas Sensor Based on PdPt Bimetallic Loaded SnO2 Nanoparticles

Sensors, Journal Year: 2025, Volume and Issue: 25(5), P. 1627 - 1627

Published: March 6, 2025

SnO2-based semiconductor gas-sensing materials are regarded as some of the most crucial sensing materials, owing to their extremely high electron mobility, sensitivity, and excellent stability. To bridge gap between laboratory-scale SnO2 its industrial applications, low-cost high-efficiency requirements must be met. This implies need for simple synthesis techniques, reduced energy consumption, satisfactory performances. In this study, we utilized a surfactant-free method modify nanoparticles with PdPt noble metals, ensuring stable state material. Under synergistic catalytic effect Pd Pt, composite material (1.0 wt%-PdPt-SnO2) significantly enhanced response HCHO. modification decreased optimal working temperature low 180 °C achieve value (Ra/Rg = 8.2) showcased lower operating temperatures, higher better selectivity detect 10 ppm HCHO when compared pristine or single metal-decorated sensors. Stability tests verified that gas sensor signals based on PdPt-SnO2 exhibit good reliability. Furthermore, portable detector was designed practical such in newly purchased cushions, indicating potential industrialization beyond laboratory.

Language: Английский

A UV-Photon-Energy-Integrated Gas Sensor Based on Pt-Nanoparticle-Decorated TiO2 Nanorods for Room-Temperature Hydrogen Detection

Chemosensors, Journal Year: 2025, Volume and Issue: 13(5), P. 177 - 177

Published: May 11, 2025

Hydrogen sensors play a crucial role in ensuring safety various industrial applications. In this study, we demonstrated the use of room-temperature hydrogen gas sensor based on Pt-nanoparticle-decorated TiO2 nanorods (TiO2 NRs/Pt NP). The NRs were synthesized via hydrothermal method, followed by Pt deposition using sputtering and thermal annealing. Under UV illumination, NR/Pt NP exhibited remarkable response 2.4 at 1% concentration, which is approximately 5.9 times higher than that bare measured dark. This enhancement attributed to synergistic effect NPs, promote charge separation spillover for oxygen molecules, activation, generates additional carriers. Moreover, stable reliable detection concentrations up without need external heating, underscoring its practical applicability under ambient conditions. These results demonstrate NP, combined with provide promising approach highly sensitive detection, offering significant potential monitoring energy systems.

Language: Английский