A Dibutyl Phthalate Sensor Based on a Nanofiber Polyaniline Coated Quartz Crystal Monitor

Wang, You Shao; Ding, Pengfei; Hu, Ruifen; Zhang, Jianming; Ma, Xingfa; Luo, Zhiyuan; Li, Guang Hua

doi:10.3390/s130303765

Cited by 20 publications

(16 citation statements)

References 20 publications

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“…As depicted in Figure 3e, the pore size distribution of the laser direct-write PI ranges from 6 to 84 nm, and their diameters mainly concentrate at about 21 nm. According to BET formula, its specific surface area is calculated to be approximately 16.83 m 2 /g, which is slightly larger than that of the coated polyaniline gas sensor previously reported [41]. In addition, the electrical resistance change of the laser-induced graphene element (length 20 mm) with temperature is described in Figure 3f.…”

Section: Resultsmentioning

confidence: 71%

A Simple Graphene NH3 Gas Sensor via Laser Direct Writing

Peng

et al. 2018

Sensors

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Ammonia gas sensors are very essential in many industries and everyday life. However, their complicated fabrication process, severe environmental fabrication requirements and desorption of residual ammonia molecules result in high cost and hinder their market acceptance. Here, laser direct writing is used to fabricate three parallel porous 3D graphene lines on a polyimide (PI) tape to simply construct an ammonia gas sensor. The middle one works as an ammonia sensing element and the other two on both sides work as heaters to improve the desorption performance of the sensing element to ammonia gas molecules. The graphene lines were characterized by scanning electron microscopy and Raman spectroscopy. The response and recovery time of the sensor without heating are 214 s and 222 s with a sensitivity of 0.087% ppm−1 for sensing 75 ppm ammonia gas, respectively. The experimental results prove that under the optimized heating temperature of about 70 °C the heaters successfully help implement complete desorption of residual NH3 showing a good sensitivity and cyclic stability.

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Section: Resultsmentioning

confidence: 71%

A Simple Graphene NH3 Gas Sensor via Laser Direct Writing

Peng

et al. 2018

Sensors

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“…In order to develop some chemical sensors, the nanowire structured conductive polymers with some soft templates or non-template assembly approach were developed, 53,54 which showed good gas sensing properties to several chemical vapours. And the polyaniline/ inorganic nanocomposites were also prepared, 55-57 their gas sensing properties to some gases examined, and the morphology tailoring of conductive polymers, composites and their applications in chemical sensors reviewed.…”

Section: Introductionmentioning

confidence: 99%

Supercontinuum generation in photonic crystal fibre by Ti:sapphire femtosecond laser

Xing¹,

Li²,

Wu³

et al. 2014

Materials Research Innovations

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ZnO has many potential applications, such as, solar cells, photocatalysts, chemical sensors and biosensors. However, to extend its visible light response is still a great challenge. In this paper, ZnO nanosheets were prepared by a wet chemical method. The surface treatment of ZnO nanosheets was carried out using chloroauric acid, and then reduced with aniline. A series of characterisations were examined by TEM (transmission electron microscopy), XRD (X-ray diffraction), the Fourier transform infrared (FTIR) spectra and ultraviolet-visible spectroscopy (UVvis). The experimental results indicated that ZnO nanosheets modified with a thin layer of Au/PANi composite exhibited wide visible light response. A chemical prototype sensor was constructed based on the ZnO/Au/polyaniline nanocomposites prepared and interdigital electrodes on flexible polymer substrates. The effects of surface treatment of ZnO nanosheets on the gas sensing behaviours were examined. The results indicated that the effective conductive channels for charge transfer and separation were formed due to the Au/polyaniline necklaces attached on the surface of ZnO nanosheets, and the type of conductivity of ZnO/Au/polyaniline nanocomposite changed to P-type from N-type with increasing the amounts of chloroauric acid. When the synthesis parameter of ZnO/Au/polyaniline nanocomposite was optimised, the gas sensitivity of ZnO/Au/PANi (polyaniline) was superior to that of PANi nanowire prepared under similar synthesis condition, and it has been found that this kind of nanocomposite not only possesses widening light response, harvests more visible light, but also presents effective channels for charge transfer. It would be useful in potential applications in photocatalysts or other fields.

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“…Different sensing material have been developed to modify the QCM sensor in order to monitor DBP in the air. Wang [ 12 ] deposited the polyaniline nanofibers on the electrode of a quartz crystal oscillator as the sensitive film and detected the DBP in the range of 20–1000 ppb with a detection limit of 20 ppb. Hu and Zhang [ 13 , 14 ] respectively used nano-structured nickel hydroxide and Au-decorated ZnO to coat QCM sensors and achieved a detection range of 5–40 ppb and 2–30 ppb with detection limits of 5 ppb and 2 ppb.…”

Section: Introductionmentioning

confidence: 99%

A Noncontact Dibutyl Phthalate Sensor Based on a Wireless-Electrodeless QCM-D Modified with Nano-Structured Nickel Hydroxide

Chen

Sun

Zhang

et al. 2017

Sensors

Self Cite

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Dibutyl phthalate (DBP) is a widely used plasticizer which has been found to be a reproductive and developmental toxicant and ubiquitously existing in the air. A highly sensitive method for DBP monitoring in the environment is urgently needed. A DBP sensor based on a homemade wireless-electrodeless quartz crystal microbalance with dissipation (QCM-D) coated with nano-structured nickel hydroxide is presented. With the noncontact configuration, the sensing system could work at a higher resonance frequency (the 3rd overtone) and the response of the system was even more stable compared with a conventional quartz crystal microbalance (QCM). The sensor achieved a sensitivity of 7.3 Hz/ppb to DBP in a concentration range of 0.4–40 ppb and an ultra-low detection limit of 0.4 ppb of DBP has also been achieved.

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A Dibutyl Phthalate Sensor Based on a Nanofiber Polyaniline Coated Quartz Crystal Monitor

Cited by 20 publications

References 20 publications

A Simple Graphene NH3 Gas Sensor via Laser Direct Writing

A Simple Graphene NH3 Gas Sensor via Laser Direct Writing

Supercontinuum generation in photonic crystal fibre by Ti:sapphire femtosecond laser

A Noncontact Dibutyl Phthalate Sensor Based on a Wireless-Electrodeless QCM-D Modified with Nano-Structured Nickel Hydroxide

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