Influence of dopant concentration on the ammonia sensing performance of citric acid-doped polyvinyl acetate nanofibers

Abstract

Chemical modification of polymer nanofiber-based ammonia sensors by introducing dopants into the active layers has been proven as one of the low-cost routes to enhance their sensing performance. Herein, we...

Early Spoilage Detection of Cultured Pacific White Shrimp Using Quartz Crystal Microbalance Gas Sensors

“…They show similar spectrum characteristics with the previous reports in literatures. [26][27][28] The FTIR spectra reveal distinctive peaks that can be attributed to the characteristic functional groups of PVAc and CA. Peaks in the broad range of 2700 cm À 1 to 3500 cm À 1 , with specific peaks identified at 3316 cm À 1 , 3222 cm À 1 , and 3005 cm À 1 , are consistent with the OÀ H stretching vibrations typically associated with the carboxylic acid groups in CA.…”

“…The morphological analysis of the nanofibers was investigated using a scanning electron microscopy (SEM, JEOL JSM–6510LA), while the Fourier transform infrared (FTIR) spectroscopy spectra was measured using FTIR – Themo Nicolet iS10. The detailed and complete material analyses of the electrospun nanofibers are available in our previous studies [26–28] …”

“…The detailed and complete material analyses of the electrospun nanofibers are available in our previous studies. [26][27][28]…”

Co-CNT/TiO2 composites effectively improved the photocatalytic degradation of malachite green

“…The gold standard cobalt-doped quantity was once 0.5 wt% in this experiment, which would possibly be due to the reality that there was once a superior doping content material in TiO 2 particles for the most environment friendly separation of photoinduced electron-hole pairs. Previous nd out about recommended the awareness of dopant ions is associated with the area cost vicinity [32][33][34]. Only when the thickness of area cost location is equal to the mild penetration depth, the electron-hole pairs can be effectively separated [35].…”

Formaldehyde gas sensors based on a quartz crystal microbalance modified with aniline-doped polyvinyl acetate nanofibers

“…18 One of the polymers for QCM surface modification is polyvinyl acetate (PVAc), which is little affected by moisture. 19 We have shown that PVAc can act as a base material for modification of the surface of QCM sensors to detect ammonia 18,20,21 and trimethylamine. 19,22 PVAc can be doped with other materials to tailor its strength of interactions with analytes.…”