Highly sensitive and ultrafast response surface acoustic wave humidity sensor based on electrospun polyaniline/poly(vinyl butyral) nanofibers

Lin, Qianqian; Li, Yang; Yang, Mujie

doi:10.1016/j.aca.2012.08.041

Cited by 82 publications

(47 citation statements)

References 34 publications

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“…Recently, PANI based metal oxide composites have been found to be more advantageous in terms of enhanced humidity sensitivity and such composites have been studied by many researchers. Electrospun PANI composite nanofibers have shown good sensitivity to humidity with a good recovery and response time as reported by Q. Lin et al [16]. M.T.S.…”

Section: Introductionmentioning

confidence: 55%

Polyaniline-Titanium dioxide composite as humidity sensor at room temperature

Kotresh¹,

Ravikiran²,

Raj³

et al. 2016

Nanosystems: Phys. Chem. Math.

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In the present work, Polyaniline (PANI) and Polyaniline-Titanium dioxide (PANI-TiO 2 ) composite have been synthesized separately by chemical polymerization of aniline without/with TiO 2 . Characteristic absorption bands of PANI and TiO 2 in the composite were confirmed by FT-IR studies, indicating the interaction of PANI with TiO 2 . Comparative study of XRD patterns of PANI and the composite confirmed superficial deposition of PANI on TiO 2 and the average size of the composite particle was found to be 25 nm. The aggregated granular porous morphology of the composite was confirmed by its SEM image. The composite's sensing response to humidity at room temperature was tested and was found to be 84.21 % in the range 25 % -95 % RH. The response and recovery time of the composite at 95 % RH were measured to be 60s and 100s respectively and its sensing stability over a period of one month was also confirmed.

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Section: Introductionmentioning

confidence: 55%

Polyaniline-Titanium dioxide composite as humidity sensor at room temperature

Kotresh¹,

Ravikiran²,

Raj³

et al. 2016

Nanosystems: Phys. Chem. Math.

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“…11.2a). Lin [42] constructed a SAW humidity sensor by casting polyaniline/poly(vinyl butyral) nanofibers on SAW resonator; the asprepared sensor could detect 0.5 % relative humidity in 1 s. Electrospun poly(vinyl pyrrolidone) (PVP)/LiTaO 3 composite nanofibrous membranes were coated onto the surface of SAW electrode to assay H 2 ; the results indicated that the sensors' sensitivity, response time, and recovery time could be remarkably improved and reached 1 %, 120, and 200 s by regulating the electrospinning parameters [43].…”

Section: Surface Acoustic Wave (Saw) Sensormentioning

confidence: 99%

Electrospun Nanofiber-Based Sensors

Wang

Ding

2014

Nanostructure Science and Technology

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Monitoring of usable, explosive, and hazardous materials (gases, heavy metal ions, and organic contaminants) is one of the most important concerns that has attracted growing attention in the past few decades. Numerous sensors have been developed to meet the demands and the pursuit of highly sensitive, selective, reversible, fast response and recovery, cost-effective, and portable sensors which have gained great interest. Electrospun nanofibrous membranes that possess large surface area, high porosity, good interconnected porous structure, and flexibility of surface functionalization are expected to be ideal candidates of substrates to improve the performance of the sensors. More interestingly, the novel two-dimensional nanofiber/net membranes fabricated by electrospinning/netting are demonstrated to have extremely large surface area and unique pore structure, which could further enhance the sensitivity, stability, and response speed of the sensors. In this chapter, we summarize recent progress in the development of electrospun nanofiber-based sensors, describe the design of different types of sensors, and discuss their sensing performances in detail. This chapter might bring further development and evolution of sensors based on electrospun nanofibers for the detection of various analytes.

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“…A humidity sensor has been fabricated with PANI/poly(vinyl butyral) (PVB) composite nanofibers deposited on a SAW resonator with a central frequency of 433 MHz [248]. Nanofibers synthesized from several polymers with different hydrophilicity, and viscoelasticity are tested as a template.…”

Section: Reviewmentioning

confidence: 99%

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

Muhammad¹,

Motta²,

Shafiei³

2018

Beilstein J. Nanotechnol.

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Electrospun one-dimensional (1D) nanostructures are rapidly emerging as key enabling components in gas sensing due to their unique electrical, optical, magnetic, thermal, mechanical and chemical properties. 1D nanostructures have found applications in numerous areas, including healthcare, energy storage, biotechnology, environmental monitoring, and defence/security. Their enhanced specific surface area, superior mechanical properties, nanoporosity and improved surface characteristics (in particular, uniformity and stability) have made them important active materials for gas sensing applications. Such highly sensitive and selective elements can be embedded in sensor nodes for internet-of-things applications or in mobile systems for continuous monitoring of air pollutants and greenhouse gases as well as for monitoring the well-being and health in everyday life. Herein, we review recent developments of gas sensors based on electrospun 1D nanostructures in different sensing platforms, including optical, conductometric and acoustic resonators. After explaining the principle of electrospinning, we classify sensors based on the type of materials used as an active sensing layer, including polymers, metal oxide semiconductors, graphene, and their composites or their functionalized forms. The material properties of these electrospun fibers and their sensing performance toward different analytes are explained in detail and correlated to the benefits and limitations for every approach.

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Highly sensitive and ultrafast response surface acoustic wave humidity sensor based on electrospun polyaniline/poly(vinyl butyral) nanofibers

Cited by 82 publications

References 34 publications

Polyaniline-Titanium dioxide composite as humidity sensor at room temperature

Polyaniline-Titanium dioxide composite as humidity sensor at room temperature

Electrospun Nanofiber-Based Sensors

Electrospun one-dimensional nanostructures: a new horizon for gas sensing materials

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