Proton conductivity of acid-doped meta-polyaniline

Effects of acids and water addition on morphology and proton conduction in sol–gel derived acid–base polysiloxane

“…Those results suggest that: (i) Si-O-Si backbone was formed; (ii) amino groups were protonated by the counter acid; and (iii) various ratios of Si-OH groups in those three membranes. These findings are also in agreement with the 29 Si CP NMR spectra of the acid-free and acid-containing hybrid materials as shown in Fig. 3.…”

“…Solid state 29 Si cross polarization nuclear magnetic resonance ( 29 Si CP NMR) spectra were obtained on a Bruker Avance AV-400WB spectrometer. Data from thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were obtained with a Netzsch STA 449C thermal gravimetric analyzer under Ar with a heating rate of 10°C/min.…”

“…Thus, the higher conductivity of the PAAS-HSO 4 membrane at 80-180°C was attributed to both the structured proton pathway and the easier acid dissociation of HSO 4 − . In the Grotthuss mechanism, the hopping of protons is realized through deprotonation-protonation processes, which strongly depend on the structure, number and mobility of these of proton donor and acceptor sites in the membranes [29]. Above 180°C, when the dissociation of H 2 PO 4 − becomes more efficient, considering that the H 2 PO 4 − bears more protons (two protons) than HSO 4 − (only one) , the conductivity of the PAAS-H 2 PO 4 membrane came higher than that of PAAS-HSO 4 .…”

Surface and proton conductivity properties of electrospun poly(vinyl butyral)/polyaniline nanofibers

“…[21][22][23] In this work, we prepared electrospun nanofiber mats by blending PANI with poly(vinyl butyral) (PVB) and investigated the thermal, surface, and proton conductivity properties of the nanofibrous meshes. [26][27][28][29][30] Therefore, in this work, we aimed to investigate the proton conductivity of PVB/PANI blend nanofiber mats which is expected to be used in the aforementioned applications with further development. Recently the preparation of protonconducting materials has become an active area of research due to the potential of these materials to be used in batteries, chemical sensors, fuel cells, and supercapacitors.…”

Highly sensitive, room temperature gas sensor based on polyaniline-multiwalled carbon nanotubes (PANI/MWCNTs) nanocomposite for trace-level ammonia detection

“…complex proton exchange mechanism[5,[50][51][52][53][54][55]. As the water molecules are ionisable, dissociate into proton (H + ) and hydroxyl ions (OH − ).…”