An enhanced flexible room temperature ammonia gas sensor based on GP-PANI/PVDF multi-hierarchical nanocomposite film

Recent progress on polyvinylidene difluoride-based nanocomposites: applications in energy harvesting and sensing

“…26b). 223 Deshmukh et al also prepared an NH 3 sensor out of the PVDF/ CeO 2 /GO composite. The variation of resistance on the gas diffusion to the sensor was recorded by changing RH in the range of 30-60%.…”

A Novel Trace-Level Ammonia Gas Sensing Based on Flexible PAni-CoFe2O4 Nanocomposite Film at Room Temperature

“…Therefore, a low-cost, sensitive, stable, ambient temperature, and reliable ammonia detection sensor is imperative. Recently, conductive conjugated polymers on flexible substrate are in fashion as sensing materials for trace-level detection of ammonia owing to their lightweight, flexible, and portable nature [ 4 ]. These type of ammonia sensors are widely reported due to their simple synthesis, ambient temperature sensitivity and low cost processing [ 5 , 6 , 7 , 8 ].…”

“…The sensor revealed excellent response time (24 s), good flexibility and reproducibility. Q. Wu et al [ 4 ] utilized porous polyvinylidene fluoride (PVDF) as aflexible template for PAni composed with graphene (GP) with 10% response towards 0.1 ppm NH 3 and response time (46 s). J. Ma et al [ 19 ] modified PET fibers by ethylenediamine (EDA) to expose amino groups and adhere to carboxyl groups of MWCNTs and coated by PAni, the sensor showed 117% response towards 50 ppm NH 3 with response time (47 s) and cost-effective flexible substrate modification.…”

Highly Efficient SO2 Sensing by Light-Assisted Ag/PANI/SnO2 at Room Temperature and the Sensing Mechanism

“…20−22 Polyaniline (PANI) is considered to be one of the most competitive candidates for low-temperature gas sensor applications. PANI-doped materials, including PANI-carbon series composites, 23,24 PANI-semiconductor nanomaterials, 8,25,26 and PANI-noble metal materials, 27,28 have been widely investigated for developing low-temperature gas sensors. Moreover, the noble metal catalyst (Au, 29,30 Ag, 31,32 Pd, 33 etc.)…”

“…The fabrication of composite nanostructures by combining semiconductors with conductive polymers is a promising way to develop room-temperature gas sensors because conductive polymers help decrease the sensor resistance, increase the active surface area, and facilitate sensing reactions. − Polyaniline (PANI) is considered to be one of the most competitive candidates for low-temperature gas sensor applications. PANI-doped materials, including PANI-carbon series composites, , PANI-semiconductor nanomaterials, ,, and PANI-noble metal materials, , have been widely investigated for developing low-temperature gas sensors. Moreover, the noble metal catalyst (Au, , Ag, , Pd, etc.)…”