Ammonia sensitivity of polyaniline films via emulsion polymerization

In situchemically polymerised polyaniline nanolayer: characterisation and sensing materials

“…In this work, the NH 3 sensitivity of PANi layer made by in situ chemical polymerisation is comparable to that of PANi layer made by emulsion polymerisation [12] and relatively lower than that of casting fibrillar PANi layer [14]. However, its sensitivity is found to be higher than that of casting electrochemically polymerised PANi layer [15].…”

“…Then, a molar equivalent aqueous solution of 0.12 M APS was gradually dropped into the PANi solution [11,12]. The solution colour was gradually changed to dark blue-green indicating that the PANi was formed in the solution.…”

Tin oxide–polyaniline heterostructure sensors for highly sensitive and selective detection of toxic gases at room temperature

“…Protonation of the emeraldine base or the oxidation of leucoemeraldine base can lead to the formation of a semiconductor or conductor. Interaction with NH 3 should deprotonate the emeraldine salt into base forming NH 4 + thereby decreasing the conductivity [24]. Both decrease as well as increase in current has been observed for PANI films on interaction with NO 2 [11,23].…”

Au nanoparticles-functionalized two-dimensional patterned conducting PANI nanobowl monolayer for gas sensor

“…To improve the gas-sensing properties, an effective method is hybridization, which can synergize or complement the sensitive properties of pure organic or inorganic gas-sensing material [15,16]. Among those composite materials, PANI-based composite gained special interest due to its good environmental and chemical stability, ease of synthesis, inexpensive monomer as well as higher sensitivity, reversible response and shorter response time [17]. Up to now, many sensitive gas sensors based on PANI nanocomposites combined with various metal oxides (SnO 2 [15], TiO 2 [18,19], MoO 3 [20], WO 3 [21], and In 2 O 3 [16]) have been reported.…”