Formaldehyde sensing properties and electrical conductivity of newly synthesized Polypyrrole-zirconium(IV)selenoiodate cation exchange nanocomposite

Khan, Asif Ali; Rao, Rifaqat Ali Khan; Alam, Nida; Shaheen, Shakeeba

doi:10.1016/j.snb.2015.01.054

Cited by 19 publications

(5 citation statements)

References 46 publications

(48 reference statements)

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“…Hosono et al [101] presented PPy/ 4-ethylbenzenesulfonic acid 40% resistance change upon 500 ppm. The result from Khan et al [102] demonstrated PPy/zirconium selenoiodate nanocomposite good reversible response toward formaldehyde vapors ranging from 5 to 7%. Antwi-Boampong and BelBruno [103] found that the PANi/PEI had significant increases in the resistance by greater than 10 k at a concentration of 38 ppm formaldehyde exposed for 1 min.…”

Section: Conducting Polymersmentioning

confidence: 99%

Thin-Film Sensors for Detection of Formaldehyde: A Review

Chen

Yuan

2015

IEEE Sensors J.

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This paper reviewed the films used in formaldehyde gas sensing recently. They can be divided into three groups: 1) metal oxide semiconductor films; 2) polymer films; and 3) carbon nanotubes (CNTs) films. Detection limits of these three groups were 1 ppb, 1 ppm, and 20 ppb, respectively. In metal-oxide-semiconductor films, the sensitivity of ZnO conductimetric type sensor was down to 1 ppb with the detectable response of 7.4. Polyethyleneimine/TiO 2 was the most sensitive film with quartz crystal microbalance sensor in polymer films, which could detect 1-ppm formaldehyde with the response ( f ) of 0.8 Hz. Either multi-wall CNTs (MWCNTs) or single-walled CNTs, forming a CNTs film, had the higher sensitivity so far, and the MWCNTs-NH 2 interdigital electrodes sensor exhibited 1.73% relative resistance change to 20 ppb of formaldehyde. The further research will be, however, needed to deal with the situation of real scenario influences, such as temperature, humidity, and interferents.

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Section: Conducting Polymersmentioning

confidence: 99%

Thin-Film Sensors for Detection of Formaldehyde: A Review

Chen

Yuan

2015

IEEE Sensors J.

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“…Wei Wang 1 , Da Chen 1,2,3 , Hongfei Wang 1 , Wenhua Yu 1 , Maozeng Wu 1 and Lei Yang 2 Consequently, carbon nanotubes (CNTs) [8][9][10] and polymer nanocomposites [11,12] have been reported as the promising alternatives for the room temperature gas detection. Beside the resistance sensors, quartz crystal microbalance (QCM) is a popular mass-sensing platform for gas detection [13,14].…”

Section: Film Bulk Acoustic Formaldehyde Sensor With Layer-by-layer A...mentioning

confidence: 99%

Film bulk acoustic formaldehyde sensor with layer-by-layer assembled carbon nanotubes/polyethyleneimine multilayers

Wang

Chen

Wang

et al. 2018

J. Phys. D: Appl. Phys.

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Trace formaldehyde vapor was detected by a micron-scale AlN film bulk acoustic resonator based on mass-sensitive mechanism. The layer-by-layer carbon nanotubes/polyethyleneimine multilayers were assembled on the resonator surface as the sensitive coating. An almost linear decrease of the resonant frequency was observed as a function of the number of nanotubes/ polyethyleneimine periods. The multilayers showed a random and porous structure and thus provided a large specific surface area for gas adsorption and diffusion. At the same time, the amine groups in polyethyleneimine had an strong affinity to formaldehyde with excellent selectivity. When exposed to gaseous formaldehyde, the attachment of gas molecules induced a small decrease in the resonant frequency, which made the sensor easily detect formaldehyde at ppb levels with 1 min response time. A linear relationship was observed between the formaldehyde concentrations and the frequency downshift of the resonator. The layer number had an obvious influence on the absorption/desorption behavior of formaldehyde. The gas sensitivity of FBAR sensors was 1.29-1.90 kHz ppb −1 with the limit of detection of 24-38 ppb.

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“…Polyaniline-tin (IV) tungstophosphate based hybrid cation exchange material 49 synthesized by sol-gel method was employed for the removal of Pb (II) ions from industrial waste water. Polypyrrole-zirconium (IV) selenoiodate (PPy/ZrSeI) nanocomposite 50 was synthesized by chemical oxidative polymerization of polypyrrole (PPy) in the presence of zirconium(IV) selenoiodate (ZrSeI) by sol-gel method, and polythiophene-tin (IV) phosphate (PTh-SnP) 51 , a polymeric hybrid nanocomposite, by incorporating polythiophene (PTh) in tin phosphate (SnP).…”

Section: Nanocomposite Ion Exchangersmentioning

confidence: 99%

Developments in Synthesis, Characterization and Applications of Composite Ion-exchange Materials: A Review

Kaushal¹,

Mittal²,

Singh³

2017

Orient. J. Chem

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In this article, a review of hybrid inorganic-organic composite ion exchangers employed as ion sensors, photocatalysts, anti-microbial agents and in water remediation has been carried out. A detailed study of the synthetic procedures, characterization of various composite ion exchangers by different analytical techniques, ion exchange characteristics and their applications has been provided. The applications of the composite ion exchangers in the separation of metal ions, as ion selective electrodes, as photocatalysts in dye degradation and as antimicrobial agents have been reviewed extensively.

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Formaldehyde sensing properties and electrical conductivity of newly synthesized Polypyrrole-zirconium(IV)selenoiodate cation exchange nanocomposite

Cited by 19 publications

References 46 publications

Thin-Film Sensors for Detection of Formaldehyde: A Review

Thin-Film Sensors for Detection of Formaldehyde: A Review

Film bulk acoustic formaldehyde sensor with layer-by-layer assembled carbon nanotubes/polyethyleneimine multilayers

Developments in Synthesis, Characterization and Applications of Composite Ion-exchange Materials: A Review

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