A novel modified fiber Bragg grating (FBG) based ammonia sensor coated with polyaniline/graphite nanofibers nanocomposites

Mohammed, Husam Abduldaem; Yaacob, Mohd Hanif

doi:10.1016/j.yofte.2020.102282

Cited by 17 publications

(8 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PANI composites are attractive because they can combine with the properties of other compounds, and the composites of PANI with carbon nanotubes, 17,18 graphite, 19 graphene, 20 metal powders, 21 and carbon black (CB) 22,23 have been accepted to effectively improve the electric conductivity.…”

Section: Introductionmentioning

confidence: 99%

Charge transport mechanism in dodecylbenzenesulfonic acid doped polyaniline/carbon black composites

Bibi

Shakoor

2021

Polymers and Polymer Composites

View full text Add to dashboard Cite

Dodecylbenzenesulfonic acid (DBSA) doped polyaniline and carbon black (CB) composites (PANI-DBSA/CB) were synthesized by in-situ polymerization of aniline in the aqueous dispersion of carbon black (CB) in the presence of ammonium persulfate (APS) as an oxidant. Various composite samples with varying amounts of CB (1 wt% and 2 wt%) were synthesized and were characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). XRD studies confirmed the formation of the well-organized and semi-crystalline structure of the composites. SEM analysis revealed the increase in grain size and the granular structure of the synthesized composites. DC conductivity was measured in the temperature range from 300 K to 393 K using two probe methods. An increase in DC conductivity was found on the inclusion of carbon black at all temperatures and the most probable model of charge transport was found to be three-dimensional variable range hopping (3D-VRH). As the concentration of CB in the composites increased, activation energy was found to be decreased. The density of states, hopping length, and hopping energy were calculated, respectively, and were found to be influenced by CB incorporation.

show abstract

Section: Introductionmentioning

confidence: 99%

Charge transport mechanism in dodecylbenzenesulfonic acid doped polyaniline/carbon black composites

Bibi

Shakoor

2021

Polymers and Polymer Composites

View full text Add to dashboard Cite

show abstract

“…As one of the most abundant inorganic compound, ammonia is widely applied for diverse applications, including industry, agricultures, and biological medicines. [41][42][43] However, it is nonnegligible that ammonia might bring irreversible damage to human even at low concentrations and lead to explosions when mixed with oxygen or air in certain proportions, which greatly threaten the security of people's lives and properties. [44,45] Meanwhile, flexible gas sensing devices or circuits prepared with natural organic materials have the risk of overload and overheat over the period of use.…”

Section: Multifunctional E-textiles Based On Biological Phytic Acid-d...mentioning

confidence: 99%

Multifunctional E‐Textiles Based on Biological Phytic Acid‐Doped Polyaniline/Protein Fabric Nanocomposites

Wang

Zhang

Cao

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

Flexible sensors are the footstone of the internet‐of‐things as they combine one with the real world. However, to date, it's still a challenge to fabricate multifunctional and reliable sensors with ease of approach and eco‐friendly materials. Herein, a multifunctional electronic textile based on biological phytic acid‐doped hierarchically structured polyaniline/protein fabric nanocomposites, is presented. Benefiting from its property of transition in doping and de‐doping state, the E‐textile exhibits practicability in human‐machine interactions, environment monitoring, and flame retardance. Owing to the construction of microfibers conductive network, the E‐textile presents high strain sensitivity and ultralow detection limit (0.1% of strain) for monitoring tiny‐human motions accurately. Meanwhile, it exhibits speedy response to ammonia (1.3 s) and excellent flame retardance which can work steadily after the fire treatment. This novel and sustainable strategy of preparing high‐performance devices with bio‐materials broaden the opportunities for the development of eco‐friendly functional materials and devices.

show abstract

“…Monitoring of ammonia level in the air using a gas/vapor sensor is in great demand [4,5] . Many works have been devoted to developing a high‐performance ammonia vapor sensor using various sensing platforms (i. e., resistive, [6,7] optical, [8] amperometric, [9] and acoustic [10] ). Among these devices, acoustic sensors based on quartz crystal microbalance (QCM) have been preferred due to their high sensitivity, real‐time measurement capability, and simple integration with other electronic components [11–16] .…”

Section: Introductionmentioning

confidence: 99%

Electrospun Polyacrylonitrile Nanofibers Mixed with Citric Acid as a Quartz Crystal Microbalance Ammonia Vapor Sensor

et al. 2022

View full text Add to dashboard Cite

The detection of ammonia vapor in the air is always challenging and in great demand, with the main issues are their low sensitivity. In this contribution, we developed a quartz crystal microbalance (QCM) gas sensor to detect ammonia vapor in the air using electrospun polyacrylonitrile (PAN) nanofiber mixed with citric acid (CA) as its sensing material. The nanostructured morphology of the as‐prepared nanofiber sensors was confirmed using scanning electron microscopy (SEM), while the existence of the CA in the PAN/CA nanofiber confirms using Fourier transform infrared (FTIR) spectroscopy. The average diameter of the PAN and PAN/CA nanofiber sample was found in the range of 260 nm to 307 nm. The highest sensor sensitivity was obtained by the PAN/CA4 nanofiber sensor with the value of 0.28 Hz/ppm, increasing almost 4 times compared to the unmodified PAN nanofiber sensor (0.075 Hz/ppm). Moreover, the sensor also shows good reversibility, fast response/recovery time, and excellent repeatability sensing performance. The addition of CA into the PAN nanofiber structures enhances the sensor sensitivity, probably due to the enrichment of carboxyl group at the sensor surface. This work could become a promising and alternative way to enhance the sensitivity of a QCM gas sensor modified with polymers doped with suitable compounds.

show abstract

A novel modified fiber Bragg grating (FBG) based ammonia sensor coated with polyaniline/graphite nanofibers nanocomposites

Cited by 17 publications

References 29 publications

Charge transport mechanism in dodecylbenzenesulfonic acid doped polyaniline/carbon black composites

Charge transport mechanism in dodecylbenzenesulfonic acid doped polyaniline/carbon black composites

Multifunctional E‐Textiles Based on Biological Phytic Acid‐Doped Polyaniline/Protein Fabric Nanocomposites

Electrospun Polyacrylonitrile Nanofibers Mixed with Citric Acid as a Quartz Crystal Microbalance Ammonia Vapor Sensor

Contact Info

Product

Resources

About