Sensing behavior of solid-state impedancemetric NOx sensor using solid electrolyte transducer and oxide receptor

Vitamin C-assisted synthesis and gas sensing properties of coaxial In2O3 nanorod bundles

“…Thus, the development of gas sensors for monitoring the concentration of nitrogen dioxide has received growing attention because of its environmental importance [37]. Taking advantage of the as-obtained bundle-like In 2 O 3 as sensing material, gas sensors used for detecting NO 2 were fabricated and their corresponding sensing performance were investigated in this study.…”

Mixed-potential-type YSZ-based sensor with nano-structured NiO and porous TPB processed with pore-formers using coating technique

“…With the rapid increasing of the exhaust emissions from the automotive vehicles and various industrial processes, the content of nitrogen oxides (NO x ) have grown speedily in the air and give rise to severe environmental pollution such as acid rain and photochemical smog [1][2][3][4][5][6][7][8]. In order to effectively monitor the NO x from car exhaust, the high performance NO x sensor which is used in the on-board diagnostics (OBD) system for vehicles has been urgently demanded [1][2][3][4][5][6].…”

Electrochemical deposition of gold on indium zirconate (InZrOx with In/Zr atomic ratio 1.0) for high temperature automobile exhaust gas sensors

“…In a recent critical review of the chemoresistive gas sensors, Sadek et al [13] believe that dependence of sensor response on operating temperature originates from varying adsorption and desorption kinetics for oxygen ions on the oxide surfaces. The investigated material in this publication has a similar structure to the so called lambda sensor based on YZrOx, for which oxygen ion diffusion through vacancies in the material and detection of the potential gradient over the material, constitutes the detection mechanism [14][15][16]. Therefore, also oxygen diffusion through vacancies in the Au/InZrOx may form at least part of the sensor detection mechanism.…”

“…Zirconia is one of the most commonly used O2 and NOx sensing material [14][15][16], whereas indium oxide is a semiconductor oxide that is recently being used as active material in exhaust gas sensors [17][18][19].…”