Fabrication of AgCu/TiO₂ nanoparticle-based sensors for selective detection of xylene vapor

Abstract

The design and fabrication of innovative nanostructured materials that could display improved sensitivity, selectivity, and rapid response/recovery characteristics still present significant scientific challenges. Herein we report the timely selective detection...

Ti3AlC2 MAX phase conversion to a novel 2D titanium carbo-oxide by an eco-friendly and low-cost method: highly selective gas sensing and supercapacitor evaluations

“…11f, the sensor response decreased slowly from 67.1% on day 1 to 58.9 on day 15, corresponding to a 12% drop in performance. This finding, which is comparable to some reported in the literature, 37 demonstrated that the 2D titanium carbo-oxide showed acceptable stability for the detection of methanol at room temperature.…”

Ga-Doped ZnO Microbelts Based Resistive-type Sensor for Detection of Acetylene Gas

“…The sensor recovered faster from 20 acetylene exposure, with a recovery time of 4.3 min, compared to 5.6 and 4.5 min of GZO-8 MBLs and GZO-16 MBLs counterparts, respectively (Figure S7c). The cross-sensitivity of the sensor toward interfering gases was determined as a ratio of the response of the sensor toward acetylene to that of the interfering gases ( S Acetylene / S o ) . The response of GZO-12 MBLs toward 5 ppm acetylene was higher than for hydrogen, pentane, toluene, carbon monoxide, and methane, corresponding to a cross-sensitivity of 4.65, 4.73, 7.55, 7.7, and 8.2, respectively (Figure e).…”

“…The cross-sensitivity of the sensor toward interfering gases was determined as a ratio of the response of the sensor toward acetylene to that of the interfering gases (S Acetylene /S o ). 39 The response of GZO-12 MBLs toward 5 ppm acetylene was higher than for hydrogen, pentane, toluene, carbon monoxide, and methane, corresponding to a cross-sensitivity of 4.65, 4.73, 7.55, 7.7, and 8.2, respectively (Figure 5e). The cross-sensitivity values were significantly higher than unit, suggesting that the sensor can potentially discriminate acetylene from interfering gases.…”

Ocimum sanctum Leaf Extract-Assisted Green Synthesis of Pd-Doped CuO Nanoparticles for Highly Sensitive and Selective NO2 Gas Sensors

“…On the other hand, exposure to oxidizing gases reduced the electrical resistance of the p-type sensing element Equation defines the sensor response for the n-type sensing layer in the case of oxidizing gases Sensitivity false( % false) = R a − R g R a × 100 where R g and R a are, respectively, the sensor resistance values in the presence and absence of target gas molecules.…”

“…NO 2 gas can be detected via semiconductor metal oxide (SMO)-based sensing devices . In addition to this, recently, detection of various other toxic gases such as carbon monoxide, toluene, xylene, and benzene has been studied via SMO-based high-performance sensing devices. − SMO-based NO 2 gas sensors are found to be the best among others because of its lower limit of detection, low cost, and vigorous detection. However, designing a high-performance NO 2 gas sensor in terms of selectivity, stability, and feasibility in various environmental conditions is still an open challenge for researchers.…”