Flexible fabric gas sensors based on PANI/WO3 p−n heterojunction for high performance NH3 detection at room temperature

An eco-friendly gelatin based triboelectric nanogenerator for a self-powered PANI nanorod/NiCo2O4 nanosphere ammonia gas sensor

“…The three main characteristic peaks of PANI are located at 2θ of 14.8°, 20.4° and 25.5°, which correspond to (011), (020) and (200) planes of PANI. 37 The above three peaks observed are due to the parallel and vertical periodicity of PANI chains. 38 These peaks indicate that PANI holds extremely low crystallinity due to the repetition of benzene and quinone rings on PANI chains.…”

MoO3/TiO2/Ti3C2Tx nanocomposite based gas sensors for highly sensitive and selective isopropanol detection at room temperature

“…22 The idea comes from the difference of the Fermi energy levels between the two materials, and thus, electrons could be made available at the surface of the active material and increase the concentration of the adsorbed oxygen ions. [23][24][25] Luo et al designed composite materials to detect NH 3 exible electronic devices through different Fermi levels of RGO and PANI. 26 Guo et al synthesised Ti 3 C 2 T x /WO 3 nanocomposites by a simple ultrasonic technology method, which affected the particle size of the introduced metal oxides, and did not allow to take advantage of the two-dimensional structure of MXene fully.…”

Interfacial energy barrier tuning of hierarchical Bi2O3/WO3 heterojunctions for advanced triethylamine sensor

“…Ref. [9] has shown that the TEA released from 200 g of putrid crucian for 7 d is less than 4 ppm, reflecting significant potential in freshness detection of seafood. Traditional TEA detection methods such as chromatography and colorimetry are limited due to their high cost and cumbersome detection procedures [10][11][12].…”