Synthesis and Sensing Properties of Pd Nanoparticle-Functionalized SnO₂Nanowires

Abstract

Networked SnO 2 nanowires were uniformly functionalized with Pd nanoparticles via -ray radiolysis. The Networked SnO 2 nanowires were fabricated through a selective growth method. The sensing properties of the Pd-functionalized SnO 2 nanowires were analyzed in terms of their response to NO 2 and CO gases. The response time and sensitivity of the sensors were significantly improved for NO 2 at lower temperatures by the Pd functionalization. The enhancement in the sensing properties is likely to be due to the spillover effect of the Pd nanoparticles.

An Operando X-ray Absorption Spectroscopy Study on Sensing Characteristics of Vertically Aligned ZnO Thin Film for Methane Gas Sensors

“…Due to their low cost, high chemical stability, robustness, and versatile preparation methods, they have been widely studied and used for gas-sensing materials. Moreover, the surface states, dimensions, and quantities of adsorbed oxygen all greatly affect gas detection efficiency [5][6][7]. Additionally, the detection response of the ZnObased gas sensor is significantly affected by operating temperature and gas concentration.…”