High-Performance Cataluminescence Sensor Based on Nanosized V2O5 for 2-Butanone Detection

Abstract

The development of high-performance sensors is of great significance for the control of the volatile organic compounds (VOCs) pollution and their potential hazard. In this paper, high crystalline V2O5 nanoparticles were successfully synthesized by a simple hydrothermal method. The structure and morphology of the prepared nanoparticles were characterized by TEM and XRD, and the cataluminescence (CTL) sensing performance was also investigated. Experiments found that the as-prepared V2O5 not only shows sensitive CTL response and good selectivity to 2-butanone, but also exhibits rapid response and recovery speed. The limit of detection was found to be 0.2 mg/m3 (0.07 ppm) at a signal to noise ratio of 3. In addition, the linear range exceeds two orders of magnitude, which points to the promising application of the sensor in monitoring of 2-butanone over a wide concentration range. The mechanism of the sensor exhibiting selectivity to different gas molecules were probed by quantum chemistry calculation. Results showed that the highest partial charge distribution, lowest HOMO-LUMO energy gap and largest dipole moment of 2-butanone among the tested gases result in it having the most sensitive response amongst other VOCs.

The Performance of V2O5:Ag Nanoparticles as Thin Film and Bulk Pellet Sensor for NO2 and NH3 Detection

“…X-ray analysis confirmed that all peaks correspond to the V 2 O 5 orthorhombic phase. The results are well agreed with those obtained by Zhang et al[4], Fu et al ]13] and Schneider[16]. The diffraction peaks of the samples manifest that the samples were well crystallized and correspond to the JCPDS Card numbering 41-1426.…”

“…The gas sensing procedure is generally relevant to the surface adsorption and surface interaction of gas molecules on the metal oxide nanoparticle. The operating temperature acts a crucial part in gas detection and has a chief effect to determine the kind of chemisorbed oxygen species [4].…”

“…Gas sensors are used for monitoring of toxic gases because of their low-cost, small size and easy operation. These days, several gas sensors based on diverse philosophies, like electrochemistry, surface acoustic wave, quartz crystal microbalance, and cataluminescence (CTL), have been prepared for the sensing of various analyses [4]. Nitrogen oxide NO x (NO or NO 2 ) is mostly produced during combustion of fuels.…”

“…These properties allow V 2 O 5 to be used for many applications concerning gas sensing. Nano-sized V 2 O 5 with various structures have been manufactured for the electrochemical sensing of ethanol, ammonia and xylene [4]. From a chemical point of view, V 2 O 5 is a very good catalyst due to its wealthy and varied chemical configuration.…”

Novel Diethyl Ether Gas Sensor Based on Cataluminescence on Nano-Pd/ZnNi3Al2O7

“…CTL, a kind of chemiluminescence (CL) emitted from heterogeneous catalytic oxidation reactions on the gas–solid interface, has been considered as a promising energy transduction mechanism for fabricating gas sensors . In recent years, a series of CTL sensing applications have been attempted to develop for diethyl ether − and many other molecules − at different laboratories. However, a higher working temperature above 200 °C is not conducive to the stability of the sensor signal …”