Au and Pt Nanoparticles Effects on the Optical and Electrical Gas Sensing Properties of Sol–Gel-Based ZnO Thin-Film Sensors

Giancaterini, L.; Cantalini, C.; Cittadini, Michela; Sturaro, Marco; Guglielmi, Massimo; Martucci, Alessandro; Resmini, Alessandro; Anselmi‐Tamburini, Umberto

doi:10.1109/jsen.2014.2356252

Cited by 50 publications

(17 citation statements)

References 40 publications

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“…Pt nanoparticles are normally considered to be a promising electrocatalyst. Recent experiments have shown that the catalytic action of Pt nanoparticle additions can powerfully improve gas sensor response and performance [41][42][43]. When H 2 (or CH 4 ) gas interacts with sensor surface, the dispersed Pt nanoparticles dissociate target molecules into atomic hydrogen (or -CH, -CH 2 and -CH 3 groups) which spills over the surface reacting with chemisorbed boron or nitrogen atoms.…”

Section: Sensing Mechanismmentioning

confidence: 99%

Super Stable Pollution Gas Sensor Based on Functionalized 2D Boron Nitride Nanosheet Materials for High Humidity Environments

2018

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We report on studies of new gas sensing devices to be used in high humidity environments. Highly thermal-stable, super hydrophobic 2-dimensional (2D) boron nitride nanosheets (BNNSs) functionalized with Pt nanoparticles were prepared and used as an active layer for the prototype. The morphologic surface, crystallographic structures and chemical compositions of the synthesized 2D materials were characterized by using optical microscope, scanning electron microscope (SEM), transmission electron microscope (TEM) and atomic force microscope (AFM) and Raman scattering, respectively. The experimental data reveals that high-quality BNNSs were prepared. A pair of Au electrodes were combined with a basic electrical circuit and the 2D sensing material to form high-performance gas sensors for the detection of pollution gases. The present structure is simple and the fabrication is easy and fast, which ensures the creation of a low-cost prototype with harsh (high humidity, high temperature) environment resistance and potential for miniaturization. The responses of the prototype to different target gases with different concentrations were characterized. The influences of the operating temperature and bias voltage effect on sensing performances were also investigated. The fabricated sensors appear to have high selectivity, high sensitivity and fast response to target gases. The sensing mechanism in the present case is attributed to the electron donation from the target gas molecules to the active layer, leading to the change of electrical properties on the surface of BNNS layer.

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Section: Sensing Mechanismmentioning

confidence: 99%

Super Stable Pollution Gas Sensor Based on Functionalized 2D Boron Nitride Nanosheet Materials for High Humidity Environments

2018

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“…More recently Giancaterini et al, had developed ZnO-Pt and ZnO-Au based gas sensors for trace level detection of NO 2 and compared with other gases such as H 2 and CO at different operating temperatures [21]. Similarly Rai et al have developed Au nanoparticles supported ZnO nanorods using hydrothermal method for NO 2 gas.…”

Section: Introductionmentioning

confidence: 99%

Rapid synthesis and characterization of hybrid ZnO@Au core–shell nanorods for high performance, low temperature NO 2 gas sensor applications

Ponnuvelu

Pullithadathil

Prasad

et al. 2015

Applied Surface Science

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“…The conductometric responses of sol-gel-based ZnO thin films with embedded 5% mol. Au or Pt nanoparticles (NPs) have been compared at different operating temperatures, to assess the effect of noble metal addition versus H 2 , CO and NO 2 sensor response [ 8 ]. Detection limits as low as 20 ppb NO 2 and 50 ppm H 2 , in line with the best performances reported for ZnO-based sensors, have been measured.…”

Section: Gas Sensorsmentioning

confidence: 99%

Chemical Sensors and Biosensors in Italy: A Review of the 2015 Literature

Compagnone

Francia

Natale

et al. 2017

Sensors

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The contributions of Italian researchers to sensor research in 2015 is reviewed. The analysis of the activities in one year allows one to obtain a snapshot of the Italian scenario capturing the main directions of the research activities. Furthermore, the distance of more than one year makes meaningful the bibliometric analysis of the reviewed papers. The review shows a research community distributed among different scientific disciplines, from chemistry, physics, engineering, and material science, with a strong interest in collaborative works.

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Au and Pt Nanoparticles Effects on the Optical and Electrical Gas Sensing Properties of Sol–Gel-Based ZnO Thin-Film Sensors

Cited by 50 publications

References 40 publications

Super Stable Pollution Gas Sensor Based on Functionalized 2D Boron Nitride Nanosheet Materials for High Humidity Environments

Super Stable Pollution Gas Sensor Based on Functionalized 2D Boron Nitride Nanosheet Materials for High Humidity Environments

Rapid synthesis and characterization of hybrid ZnO@Au core–shell nanorods for high performance, low temperature NO 2 gas sensor applications

Chemical Sensors and Biosensors in Italy: A Review of the 2015 Literature

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